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Updated: Sep 24, 2025

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
Effect of polymer molecular weight on J51 based organic solar cells
Yangqian Zhang1, Xiangfei Xu1, Jiaorong Lu1
1Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University 30 South Puzhu Road Nanjing 211816 Jiangsu P. R. China iamsmzhang@njtech.edu.cn.
Abstract:
Very recently, organic solar cells (OSCs) have achieved outstanding scientific results with a power conversion efficiency (PCE) of over 16%. However, it is rarely reported on how molecular weight (M n) of polymer donors affects the solar cell performances. In this work, the wide bandgap polymer donor J51 with different M n from 8 to 36 kDa were synthesized and used for fabrication of J51:PC71BM devices. It was found that the PCEs were gradually on the increase with the increased molecular weight of J51 donor. This work demonstrated the relationship between devices performance and polymer molecular weight, which enriched the OSCs research content. It provides valuable reference information that optimal molecular weight of polymer donors should be limited in what is considered the applicable range.
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