Collaborative Research: Block Copolymer Compatibilizers for Controlled Morphology and Interfacial Properties in Polymer-Fullerene Blends

合作研究：用于控制聚合物-富勒烯共混物形态和界面性质的嵌段共聚物增容剂

• 批准号: 1264583
• 负责人: Venkat Ganesan
• 金额: $ 19.45万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1264583&HistoricalAwards=false
• 关键词: Collaborative; Research; Block; Copolymer; Compatibilizers

The PIs have previously found that a hierarchical morphology of donor and acceptor domains led to a high yield of electron transfer, enhanced exciton dissociation, and a high power conversion efficiency (PCE). In this proposal, they seek to combine theory and experiments in a coordinated approach to manipulate the nanostructured hierarchical morphologies in a controlled manner in order to quantify the influence of different morphological length scales on the optoelectronic properties and the efficiencies of solar cells composed of a semi-conducting donor and the fullerene acceptor system, PCBM. One way to ensure increased contact between the donor and acceptor phases is to use block copolymers (BCP), PTB7, as ?compatiblizers? to meld the two phases. Their approach is to find what the ?design rules? are for OPVs by undertaking a systematic combined experimental-theoretical investigation for designing efficient compatibilizers in the context of OPV applications. Their general plan is to synthesize PTB7 block copolymers, measure the ÷-interaction parameter between model polymer blocks, PTB7, and fullerene in thin film, multilayer blends, then elucidate and correlate the thermodynamics and microstructures of the BHJ blends to the morphology and optoelectronic properties of bulk heterojunction photovoltaics with PTB7 block copolymer compatibilizers.

PI 此前发现，供体和受体域的形态可导致高产率的电子转移、增强的激子解离和高功率转换效率 (PCE)。在这项提案中，他们寻求将理论和实验结合起来。以受控方式操纵纳米结构分级形态的协调方法，以量化不同形态长度尺度对由半导体供体和半导体组成的太阳能电池的光电特性和效率的影响富勒烯受体系统，PCBM。确保增加供体相和受体相之间接触的一种方法是使用嵌段共聚物（BCP）、PTB7 作为“相容剂”来融合两个相。他们的总体计划是合成 PTB7 嵌段共聚物，并测量 OPV 的相容性。薄膜、多层共混物中模型聚合物嵌段、PTB7 和富勒烯之间的 ÷ 相互作用参数，然后阐明 BHJ 共混物的热力学和微观结构与带有 PTB7 嵌段共聚物增容剂的本体异质结光伏电池的形态和光电特性之间的关系。