DR3TBDTT Based Ternary Blends Containing Conjugated Polymers： Crystallization Determines Morphology and Performance

作     者：Jingping Yin Weihua Zhou Qingyun Ai Xiangchuan Meng Siqi Liu Zoukangning Yu Jianrong Zeng Yiwang Chen 

作者机构：College of Chemistry Nanchang University 999 Xuefu Avenue Nanchang Jiangxi 330031 China School of Materials Science and Engineering Nanchang University 999 Xuefu Avenue Nanchang Jiangxi 330031 China Shanghai Synchrotron Radiation Facility (SSRF) Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China 

出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)

年 卷 期：2018年第36卷第5期

页      面：437-442页

核心收录：

学科分类：0710[理学-生物学] 080503[工学-材料加工工程] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 071002[理学-动物学] 

基　　金：国家自然科学基金 国家自然科学基金国家杰出青年科学基金 

主　　题：crystallization morphology ternary blends organic solar cells 

摘      要：How the conjugated polymers affect the crystallization of DR3TBDTT, in addition to the corresponding morphology and performance, is not well understood. In this work, the weakly crystalline polymer PTB7-Th and highly crystalline polymers of PCDTBT and P3HT were incorporated into DR3TBDTT：PC71BM system to investigate the variation of crystallization, morphology and performance. It is demonstrated that PTB7-Th is the most effective additive to improve the PCE value of DR3TBDTT：PC71BM to 5.7%, showing the nucleating agent reducing the crystallization correlation length （CCL） value of DR3TBDTT from 18.7 nm to 17.0 rim, in addition to the optimized morphology. In contrast, the PCDTBT and P3HT could induce the crystallization of DR3TBDTT, leading to much higher CCL value as well as obvious phase separation. Despite of energy level alignment, the crystallization of DR3TBDTT influenced by polymers determines the corresponding morphology of active layers and photovoltaic performance.