Functional Materials (FM) https://heika-research.de/index.php/en/research/functional-materials-fm en Synthesis and Nanostructuring of Heteroazulene-Materials for Thermoelectric Generators https://heika-research.de/index.php/en/research/functional-materials-fm/synthesis-and-nanostructuring-heteroazulene-materials <span class="field field--name-title field--type-string field--label-hidden">Synthesis and Nanostructuring of Heteroazulene-Materials for Thermoelectric Generators</span> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span lang="" about="/en/user/31" typeof="schema:Person" property="schema:name" datatype="" content="Maria Garcia Hernandez">Maria Garcia H…</span></span> <span class="field field--name-created field--type-created field--label-hidden">Thu, 08/30/2018 - 13:54</span> <div class="clearfix text-formatted field field--name-field-summary field--type-text-long field--label-hidden field__item"><p><span><span><span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US">The cooperation between the Lemmer group (KIT) and the Bunz group (Heidelberg University, Uni HD) about new materials for thermoelectric generators (TEG) is a multidisciplinary project at the interface of organic chemistry, physical chemistry and material science. Thermoelectric generators are devices for the conversion of (waste) heat to electrical power and are key components for energy recycling. Organic thermoelectric materials offer the advantage of flexibility and large area printing of the active materials, which makes them adjustable to different heat sources and more cost effective through high throughput techniques.</span></span></span></span></p> <p><span><span><span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US">During the last project phase a new thiaazulenic building block was created by our synthetic team (Uni HD), polymerized in collaboration and with the know-how of the material team (KIT) and finally tested in thermoelectric generators (KIT). </span></span></span></span></p> <p><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span>We could outperform the standard literature material (PEDOT:Tos) in terms of the Seebeck coefficient (</span></span></span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span>88.6 </span></span></span><span lang="EL" xml:lang="EL" xml:lang="EL"><span><span>μ</span></span></span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span>V/K</span></span></span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span> vs ca. 50.0 </span></span></span><span lang="EL" xml:lang="EL" xml:lang="EL"><span><span>μ</span></span></span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span>V/K</span></span></span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span>) and are now looking in to different doping possibilities and fine tuning of the molecular structure. </span></span></span></p></div> <div class="field field--name-field-research-bridges field--type-entity-reference field--label-above"> <div class="field__label">Research bridges</div> <div class="field__items"> <div class="field__item"><a href="/en/research/functional-materials-fm" hreflang="en">Functional Materials (FM)</a></div> </div> </div> <div class="field field--name-field-start-date field--type-datetime field--label-above"> <div class="field__label">Start date</div> <div class="field__item"> <time datetime="2018-01-01T12:00:00Z" class="datetime">01/01/2018</time> </div> </div> <div class="field field--name-field-end-date field--type-datetime field--label-hidden field__item"><time datetime="2018-12-31T12:00:00Z" class="datetime">12/31/2018</time> </div> <div class="field field--name-field-contact-person field--type-entity-reference field--label-above"> <div class="field__label"><h3>Project management</h3></div> <div class="field__items"> <article data-history-node-id="120" role="article" about="/en/prof-dr-uwe-bunz" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/prof-dr-uwe-bunz" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Prof. Dr. Uwe Bunz</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Organic Chemistry</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Heidelberg University</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="https://www.uni-heidelberg.de/fakultaeten/chemgeo/oci/akbunz/bunz.html">Research Groupe Bunz</a></div> </div> </div> </article> <article data-history-node-id="101" role="article" about="/en/prof-dr-rer-nat-uli-lemmer" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="field field--name-field-profile-picture field--type-entity-reference field--label-hidden field__item"><article class="media media--type-image media--view-mode-portrait-image"> <div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <picture> <!--[if IE 9]><video style="display: none;"><![endif]--> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=HZFbfnS7 2x" media="all and (min-width: 769px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=HZFbfnS7 2x" media="all and (min-width: 481px) and (max-width: 768px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_phone/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=LvSEEzCw 1x, /sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy 2x" media="all and (max-width: 480px)" type="image/jpeg"/> <!--[if IE 9]></video><![endif]--> <img src="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy" alt="Prof. Dr. Uli Lemmer" typeof="foaf:Image" /> </picture> </div> </article> </div> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/prof-dr-rer-nat-uli-lemmer" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Prof. Dr. rer. nat Uli Lemmer</span> </a> </h2> </div> <div class="field field--name-field-function-1 field--type-string field--label-hidden field__item">Director Research Bridge FM</div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Light Technology Institute</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Karlsruhe Institute of Technology</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="http://www.lti.kit.edu/english/mitarbeiter_lemmer.php">Uli Lemmer</a></div> </div> </div> </article> </div> </div> Thu, 30 Aug 2018 11:54:09 +0000 Maria Garcia Hernandez 136 at https://heika-research.de Nanoparticles in Porous organic coordination compounds: from functional molecules to functional materials https://heika-research.de/index.php/en/research/functional-materials-fm/nanoparticles-porous-organic-coordination-compounds-functional <span class="field field--name-title field--type-string field--label-hidden">Nanoparticles in Porous organic coordination compounds: from functional molecules to functional materials</span> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span lang="" about="/en/user/31" typeof="schema:Person" property="schema:name" datatype="" content="Maria Garcia Hernandez">Maria Garcia H…</span></span> <span class="field field--name-created field--type-created field--label-hidden">Thu, 08/30/2018 - 13:56</span> <div class="clearfix text-formatted field field--name-field-summary field--type-text-long field--label-hidden field__item"><p><span><span><span><span>Das Projekt hatte zum Ziel, formstabile organische Käfigverbindungen zu synthetisieren und diese zum einen mittels Lage-bei-Lage-Abscheidung auf Oberflächen aufwachsen zu lassen, wobei diese sich entlang einer kristallinen Vorzugsrichtung orientieren sollten. Dieses ist nach mehreren Versuchen für eine [4+6] Iminkäfigverbindung auch gelungen. Hierzu war es nötig, Gold vorher mit Mercaptododekansäure zu beschichten, um den Kristallwachstum zu ermöglichen. Weitere Untersuchungen hierzu stehen noch aus. Im zweiten Teil des Projektes ging es um die Synthese löslicher Käfigverbindungen, die eine Vielzahl an polaren funktionellen Gruppen im Inneren aufweisen, um die Kavität als bevorzugten Raum für die Bildung von Metall- und Metalloxoclustern bereitzustellen. Nach eigehender Entwicklung konnte eine Synthesestrategie entwickelt werden, die einen solchen löslichen Käfig ermöglicht. Folgereaktionen zur Generierung von Metall- und Metalloxoclustern stehen noch an.</span></span></span></span></p></div> <div class="field field--name-field-research-bridges field--type-entity-reference field--label-above"> <div class="field__label">Research bridges</div> <div class="field__items"> <div class="field__item"><a href="/en/research/functional-materials-fm" hreflang="en">Functional Materials (FM)</a></div> </div> </div> <div class="field field--name-field-start-date field--type-datetime field--label-above"> <div class="field__label">Start date</div> <div class="field__item"> <time datetime="2018-01-01T12:00:00Z" class="datetime">01/01/2018</time> </div> </div> <div class="field field--name-field-end-date field--type-datetime field--label-hidden field__item"><time datetime="2018-12-31T12:00:00Z" class="datetime">12/31/2018</time> </div> <div class="field field--name-field-contact-person field--type-entity-reference field--label-above"> <div class="field__label"><h3>Project management</h3></div> <div class="field__items"> <article data-history-node-id="102" role="article" about="/en/prof-dr-michael-mastalerz" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="field field--name-field-profile-picture field--type-entity-reference field--label-hidden field__item"><article class="media media--type-image media--view-mode-portrait-image"> <div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <picture> <!--[if IE 9]><video style="display: none;"><![endif]--> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=aUNTw3_7 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=NdR8ddyZ 2x" media="all and (min-width: 769px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=aUNTw3_7 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=NdR8ddyZ 2x" media="all and (min-width: 481px) and (max-width: 768px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_phone/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=oyl0hwl2 1x, /sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=aUNTw3_7 2x" media="all and (max-width: 480px)" type="image/jpeg"/> <!--[if IE 9]></video><![endif]--> <img src="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_MMastalerz_0.jpg?h=46ed6214&amp;itok=aUNTw3_7" alt="Prof. Dr. Michael Mastalerz" typeof="foaf:Image" /> </picture> </div> </article> </div> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/prof-dr-michael-mastalerz" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Prof. Dr. Michael Mastalerz</span> </a> </h2> </div> <div class="field field--name-field-function-1 field--type-string field--label-hidden field__item">Director Research Bridge FM</div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Organic Chemistry</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Heidelberg University</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="https://www.uni-heidelberg.de/fakultaeten/chemgeo/oci/mastalerz/mastalerz.html">Michael Mastalerz</a></div> </div> </div> </article> <article data-history-node-id="188" role="article" about="/en/dr-julia-rinck-0" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="field field--name-field-profile-picture field--type-entity-reference field--label-hidden field__item"><article class="media media--type-image media--view-mode-portrait-image"> <div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <picture> <!--[if IE 9]><video style="display: none;"><![endif]--> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=Fkqp1G0Z 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=Y3r8r6eL 2x" media="all and (min-width: 769px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=Fkqp1G0Z 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=Y3r8r6eL 2x" media="all and (min-width: 481px) and (max-width: 768px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_phone/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=RUPcNOx0 1x, /sites/default/files/styles/portrait_1x_tablet/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=Fkqp1G0Z 2x" media="all and (max-width: 480px)" type="image/jpeg"/> <!--[if IE 9]></video><![endif]--> <img src="/sites/default/files/styles/portrait_1x_tablet/public/2018-09/Rinck_Julia_Pic.JPG?h=cdf08b7e&amp;itok=Fkqp1G0Z" alt="Dr. Julia Rinck" typeof="foaf:Image" /> </picture> </div> </article> </div> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/dr-julia-rinck-0" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Dr. Julia Rinck</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Functional Interfaces</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Karlsruhe Institute of Technology</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="https://www.heika-research.de/en/research/heika-centre-material-research">Until September 2018</a></div> </div> </div> </article> </div> </div> Thu, 30 Aug 2018 11:56:35 +0000 Maria Garcia Hernandez 137 at https://heika-research.de Towards High Yield PERovskite solar cells by inkjet printing <HYPER> https://heika-research.de/index.php/en/research/functional-materials-fm/towards-high-yield-perovskite-solar-cells-inkjet-printing <span class="field field--name-title field--type-string field--label-hidden">Towards High Yield PERovskite solar cells by inkjet printing &lt;HYPER&gt;</span> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span lang="" about="/en/user/32" typeof="schema:Person" property="schema:name" datatype="">Regine Kleber</span></span> <span class="field field--name-created field--type-created field--label-hidden">Mon, 11/12/2018 - 17:08</span> <div class="clearfix text-formatted field field--name-field-summary field--type-text-long field--label-hidden field__item"><p><span><span><span><span><span lang="EN-GB" xml:lang="EN-GB" xml:lang="EN-GB">Perovskite solar cells have revolutionised the field of emerging photovoltaic technologies by demonstrating power conversion efficiencies surpassing 22% in just a few years. One of the key issues hindering further progress in the field and the incorporation of these devices into industrial applications is the notorious lack of reproducibility of perovskite devices experienced by researchers worldwide. This issue has resulted in the routine practice of reporting photovoltaic parameter histograms showing wide spread of performance for identically fabricated devices. Recently, we have identified this lack of reproducibility to be linked to large-scale compositional and electronic inhomogeneities of spin-coated perovskite active layers. This, and the need for scalability for future fabrication of perovskite solar cells, highlights the need to focus on the development of alternative deposition methods for perovskite solar cells, such as inkjet printing. In this project, we aim to utilize the inkjet printing deposition method for fabrication of high yield and high performance perovskite solar cells. The project &lt;HYPER&gt; is based on the complementary areas of expertise of the Heidelberg and KIT PIs and will combine inkjet printing of perovskite layers, advanced spectroscopic characterisation and device fabrication. Specifically, we will characterise the compositional and electronic homogeneity of the inkjet printed perovskite layers by x-ray and ultraviolet photoemission spectroscopy mapping experiments and fine tune the deposition parameters for optimal layer quality and homogeneity. The optimal layers will be utilized as active layer in perovskite solar cells, which we will show to exhibit superior reproducibility when compared to reference spin-coated layers. Finally, we will apply the results of the project to large area modules that will exemplify the scalability of inkjet printing and bring perovskite solar cells closer to industrial application.</span></span></span></span></span></p></div> <div class="field field--name-field-research-bridges field--type-entity-reference field--label-above"> <div class="field__label">Research bridges</div> <div class="field__items"> <div class="field__item"><a href="/en/research/functional-materials-fm" hreflang="en">Functional Materials (FM)</a></div> </div> </div> <div class="field field--name-field-start-date field--type-datetime field--label-above"> <div class="field__label">Start date</div> <div class="field__item"> <time datetime="2019-01-01T12:00:00Z" class="datetime">01/01/2019</time> </div> </div> <div class="field field--name-field-end-date field--type-datetime field--label-hidden field__item"><time datetime="2019-12-31T12:00:00Z" class="datetime">12/31/2019</time> </div> <div class="field field--name-field-contact-person field--type-entity-reference field--label-above"> <div class="field__label"><h3>Project management</h3></div> <div class="field__items"> <article data-history-node-id="195" role="article" about="/index.php/en/jun-prof-dr-yana-vaynzof" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="content-container"> <div class="header-container"> <h2> <a href="/index.php/en/jun-prof-dr-yana-vaynzof" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Jun.-Prof. Dr. Yana Vaynzof</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Centre for Advanced Materials (CAM)</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Heidelberg University</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="http://www.cam.uni-heidelberg.de/ag_vaynzof/">Research Group Vaynzof</a></div> </div> </div> </article> <article data-history-node-id="196" role="article" about="/index.php/en/dr-ulrich-wilhelm-paetzold" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="content-container"> <div class="header-container"> <h2> <a href="/index.php/en/dr-ulrich-wilhelm-paetzold" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Dr. Ulrich Wilhelm Paetzold</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Microstructure Technology (IMT)</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Karlsruhe Institute of Technology</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="https://www.imt.kit.edu/paetzold.php">Research Group Paetzold</a></div> </div> </div> </article> </div> </div> Mon, 12 Nov 2018 16:08:24 +0000 Regine Kleber 209 at https://heika-research.de Functionalized tetraazapentacenes as electron-transport materials for multi-layer OLEDs https://heika-research.de/index.php/en/research/functional-materials-fm/functionalized-tetraazapentacenes-electron-transport-materials <span class="field field--name-title field--type-string field--label-hidden">Functionalized tetraazapentacenes as electron-transport materials for multi-layer OLEDs</span> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span lang="" about="/en/user/31" typeof="schema:Person" property="schema:name" datatype="" content="Maria Garcia Hernandez">Maria Garcia H…</span></span> <span class="field field--name-created field--type-created field--label-hidden">Thu, 03/07/2019 - 13:42</span> <div class="clearfix text-formatted field field--name-field-summary field--type-text-long field--label-hidden field__item"><p><span><span><span><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US">The goal of our HEiKA project was to find electron transport layer (ETL) materials suitable for multi-layer OLEDs according to the orthogonal solvent concept. Therefore, the material needs to be soluble in some solvents and insoluble in others. This is to prevent solvent penetration in a layer below and layer intermixing.</span></span></span></span></p> <p><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span><span>Tetraazapentazenes (TAPs) are electron-poor derivatives compared to the well-studied pentacene. The TAPs shows a lower lying LUMO energy level (ca. -3.5 eV) and are applicable as electron-transport materials (ETM). We adjust optical properties of mono-bromo TAP by chemical functionalization. We received a high amount of new compounds that are now under investigation. With the synthesized materials mass transport measurements are done using an ultraprecise sorption apparatus with a quartz crystal microbalance. The measurements show that it is possible to tune solubility by adding substituents and get ETL materials that fit the orthogonal solvent concept. Also we found a material/solvent combination with a profoundly increased solvent diffusion coefficient.</span></span></span></p></div> <div class="field field--name-field-research-bridges field--type-entity-reference field--label-above"> <div class="field__label">Research bridges</div> <div class="field__items"> <div class="field__item"><a href="/en/research/functional-materials-fm" hreflang="en">Functional Materials (FM)</a></div> </div> </div> <div class="field field--name-field-contact-person field--type-entity-reference field--label-above"> <div class="field__label"><h3>Project management</h3></div> <div class="field__items"> <article data-history-node-id="231" role="article" about="/en/dr-felix-hinkel" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/dr-felix-hinkel" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Dr. Felix Hinkel</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Organic Chemistry</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">University of Heidelberg</div> </div> </div> </article> <article data-history-node-id="232" role="article" about="/en/dr-ing-philip-scharfer" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/dr-ing-philip-scharfer" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Dr.-Ing. Philip Scharfer</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Thermal Process Engineering</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">KIT</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="https://www.tvt.kit.edu/370_411.php">Contact</a></div> </div> </div> </article> </div> </div> Thu, 07 Mar 2019 12:42:23 +0000 Maria Garcia Hernandez 244 at https://heika-research.de The Quest for Stable n-Doped Polyelectrolytes https://heika-research.de/index.php/en/research/functional-materials-fm/quest-stable-n-doped-polyelectrolytes <span class="field field--name-title field--type-string field--label-hidden">The Quest for Stable n-Doped Polyelectrolytes</span> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span lang="" about="/en/user/31" typeof="schema:Person" property="schema:name" datatype="" content="Maria Garcia Hernandez">Maria Garcia H…</span></span> <span class="field field--name-created field--type-created field--label-hidden">Thu, 03/07/2019 - 13:49</span> <div class="clearfix text-formatted field field--name-field-summary field--type-text-long field--label-hidden field__item"><p><span><span><span><strong><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span>KIT LTI:</span></span></strong><br /> <span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span>In this report, we outline recent advances of thermoelectric n-type polymers that are suitable for printed thermoelectric generators (TEGs). In a first approach, the BiEDOT analogue BiEDOT-Cl was used to synthesize PEDOT-Cl by means of an oxidative polymerization process in the presence of FeTos3. The as-synthesized polymer exhibits a negative Seebeck coefficient and therefore shows n-type behavior. In addition, this polymer shows rheological properties suitable for printing. This paves the way for the integration in printed thermoelectric devices, which enables a dramatic boost of the expected power output in combination with a p-type polymer. </span></span></span></span></span></p> <p><span><span><span><strong><span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span>OCI HD:</span></span></strong><br /> <span lang="EN-US" xml:lang="EN-US" xml:lang="EN-US"><span>In this report, we present new routes and synthetic strategies towards the development of an n-type material, which meet the requirements for application in TEGs. Thereby we focused on heteroazulenes and we able to synthesize two new monomers <strong>CETO</strong> and <strong>F2-CETO</strong> as well as polymers <strong>P1-P4</strong>. Their characterization is ongoing regarding stability, doping mechanism and optoelectronic properties.</span></span></span></span></span></p></div> <div class="field field--name-field-research-bridges field--type-entity-reference field--label-above"> <div class="field__label">Research bridges</div> <div class="field__items"> <div class="field__item"><a href="/en/research/functional-materials-fm" hreflang="en">Functional Materials (FM)</a></div> </div> </div> <div class="field field--name-field-contact-person field--type-entity-reference field--label-above"> <div class="field__label"><h3>Project management</h3></div> <div class="field__items"> <article data-history-node-id="120" role="article" about="/en/prof-dr-uwe-bunz" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/prof-dr-uwe-bunz" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Prof. Dr. Uwe Bunz</span> </a> </h2> </div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Institute of Organic Chemistry</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Heidelberg University</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="https://www.uni-heidelberg.de/fakultaeten/chemgeo/oci/akbunz/bunz.html">Research Groupe Bunz</a></div> </div> </div> </article> <article data-history-node-id="101" role="article" about="/en/prof-dr-rer-nat-uli-lemmer" class="node node--type-people-profile node--view-mode-teaser"> <div class="node__content"> <div class="field field--name-field-profile-picture field--type-entity-reference field--label-hidden field__item"><article class="media media--type-image media--view-mode-portrait-image"> <div class="field field--name-field-media-image field--type-image field--label-hidden field__item"> <picture> <!--[if IE 9]><video style="display: none;"><![endif]--> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=HZFbfnS7 2x" media="all and (min-width: 769px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy 1x, /sites/default/files/styles/portrait_2x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=HZFbfnS7 2x" media="all and (min-width: 481px) and (max-width: 768px)" type="image/jpeg"/> <source srcset="/sites/default/files/styles/portrait_1x_phone/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=LvSEEzCw 1x, /sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy 2x" media="all and (max-width: 480px)" type="image/jpeg"/> <!--[if IE 9]></video><![endif]--> <img src="/sites/default/files/styles/portrait_1x_tablet/public/2018-08/BD_member_ULemmer.jpg?h=f8b064a3&amp;itok=7ydievPy" alt="Prof. Dr. Uli Lemmer" typeof="foaf:Image" /> </picture> </div> </article> </div> <div class="content-container"> <div class="header-container"> <h2> <a href="/en/prof-dr-rer-nat-uli-lemmer" rel="bookmark"><span class="field field--name-title field--type-string field--label-hidden">Prof. Dr. rer. nat Uli Lemmer</span> </a> </h2> </div> <div class="field field--name-field-function-1 field--type-string field--label-hidden field__item">Director Research Bridge FM</div> <div class="field field--name-field-institute field--type-string field--label-hidden field__item">Light Technology Institute</div> <div class="field field--name-field-facility field--type-string field--label-hidden field__item">Karlsruhe Institute of Technology</div> <div class="field field--name-field-link field--type-link field--label-hidden field__item"><a href="http://www.lti.kit.edu/english/mitarbeiter_lemmer.php">Uli Lemmer</a></div> </div> </div> </article> </div> </div> Thu, 07 Mar 2019 12:49:59 +0000 Maria Garcia Hernandez 249 at https://heika-research.de