Selenium and tellurium-based organic materials

硒碲基有机材料

• 批准号: RGPIN-2015-04685
• 负责人: Seferos, Dwight
• 金额: $ 5.39万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=664664
• 关键词: Selenium; tellurium; based; organic; materials

This proposal describes our research program in the creation of novel materials that contain selenium and tellurium with multiple applications including solar energy. The overarching goal is to transform high carbon-content electronic materials into better semiconductors through the judicious incorporation of metal and semimetal atoms. I propose a suite of new tellurium-containing materials that include polymers, graphene, and molecular frameworks. We will examine these systems as solids and as electronic devices (solar cells and transistors). Another part of this program is aimed at unraveling the phase behavior of selenium-containing block copolymers. Our goals are to synthesize a variety of compositions and develop a deep understanding of how polymer chain length, structure, and composition relate to solid-state properties. In parallel new polymer motifs will be synthesized including circular and bottlebrush-type polymers that contain selenium in their structure. In a third research thrust, I propose to build a program on singlet fission (SF). SF is a process that is unique to organic matter, where the absorption of a photon leads to the generation of two charge carriers. This has the potential to greatly improve solar cell efficiency. Whereas SF in small molecules has been known since the 1960s, polymers would be much more useful for eventual implementation as devices. For this project we will prepare new polymers that contain the structural motifs of SF small-molecules. We will use our fabrication facility to develop solar cells that use these polymers to operate by the SF mechanism. The project will have a long-term impact in energy and materials and will train students in multidisciplinary research for employment in industry, academia and government. *****************************

该提案描述了我们的研究计划，以创建包含硒和柜员的新型材料，其中包括太阳能在内。总体目标是通过明智地掺入金属和半分原子，将高碳含电子材料转换为更好的半导体。我提出了包括聚合物，石墨烯和分子框架在内的新型含卸核材料的套件。我们将把这些系统视为固体和电子设备（太阳能电池和晶体管）。该程序的另一部分旨在阐明含硒块共聚物的相位行为。我们的目标是综合各种组合物，并对聚合物链长度，结构和组成如何与固态特性有关。在平行的新聚合物中，将合成新的聚合物基序，包括圆形和奶瓶型聚合物，这些聚合物在其结构中包含硒。在第三次研究中，我建议建立有关单线裂变（SF）的程序。 SF是一个在有机物中独有的过程，其中光子的吸收会导致两个电荷载体产生。这有可能大大提高太阳能电池效率。自1960年代以来，小分子中的SF在小分子中已知，而聚合物对于最终作为设备的实现将更加有用。对于这个项目，我们将准备包含SF小分子的结构基序的新聚合物。我们将使用我们的制造设施来开发使用这些聚合物通过SF机制运行的太阳能电池。该项目将对能源和材料产生长期影响，并将培训学生从事工业，学术界和政府就业的多学科研究。 *************************************