Synthesis and Photovoltaic Performance of the Asymmetric Polymer of a Thiophene-Benzene Unit-contained Diketopyrrolopyrrole (DPP)Derivative Used for Donor Material of Organic Solar Cells
ZENG Xianghua, LI Zhanfeng, REN Jingkun, LIU Weipeng, CHEN Jinbo,WANG Xiangkun, HAO Yuying
Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024
Abstract: A novel donor material for organic solar cells — the polymer of a diketopyrrolo[3,4-c]pyrrole (DPP) derivative that contains thiophene-benzene asymmetric unit (namely PDPP-PT) was designed and synthesized with the aim of optimizing the photovoltaic performance of polymer solar cells. The introduction of the asymmetric structure endows the polymer with better mole-cular packing, which is beneficial to device fabrication. This novel polymer has a wide absorption window ranging from 300 nm to 900 nm and a narrow optical band gap of 1.5 eV. The corresponding solar cells featured an open-circuit voltage of 0.68 V and a power conversion efficiency (PCE) of 1.51% with 260 nm thick active layer. Hence, the PDPP-PT exhibits advantages in the fabrication of thick-active-layer solar cells, and can provide a new idea for molecular design of polymer donor materials.
曾祥花, 李战峰, 任静琨, 刘伟鹏, 陈今波, 王向坤, 郝玉英. 基于噻吩-苯非对称单元的DPP类聚合物给体材料的合成及光伏性能[J]. 《材料导报》期刊社, 2018, 32(9): 1423-1426.
ZENG Xianghua, LI Zhanfeng, REN Jingkun, LIU Weipeng, CHEN Jinbo, WANG Xiangkun, HAO Yuying. Synthesis and Photovoltaic Performance of the Asymmetric Polymer of a Thiophene-Benzene Unit-contained Diketopyrrolopyrrole (DPP)Derivative Used for Donor Material of Organic Solar Cells. Materials Reports, 2018, 32(9): 1423-1426.
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2018, Vol. 32 
