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

doi:10.11896/j.issn.1005-023X.2018.09.005

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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.

Key words： asymmetry polymer donor organic solar cell polymer solar cell diketopyrrolopyrrole (DPP)

Published: 10 May 2018 Online: 2018-07-06

CLC number:

TM914.4

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	Articles by authors
	ZENG Xianghua
	LI Zhanfeng
	REN Jingkun
	LIU Weipeng
	CHEN Jinbo
	WANG Xiangkun
	HAO Yuying

Cite this article:

ZENG Xianghua,LI Zhanfeng,REN Jingkun, et al. 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[J]. Materials Reports, 2018, 32(9): 1423-1426.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.09.005 OR https://www.mater-rep.com/EN/Y2018/V32/I9/1423

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