苯并二噻吩基氯代聚合物给体材料的合成工艺与性能分析

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大键词：有机太阳能电池；给体材科；本开一噻吩；氯取代；泵合物

中图分类号：TN304.5 文献标志码：A 文章编号：1003-5168(2025)19-0086-04

DOI:10.19968/j.cnki.hnkj.1003-5168.2025.19.017

Synthesis process and performance analysis of benzodithiophene-based chlorinatedpolymerdonormaterials

LAI Ang DENG Peng LIU Zhenxin (WuhanKingfa Science& TechnologyCo.,Ltd.,Wuhan 4301Oo, China)

Abstract: [Purposes] The eficient conversion and utilization of solar energy,as a green and sustainable energy source,is a core approach to addressing the global energy crisis.This research aims to address the low eficiency issue of organic solar cells(OSCs), Designed and synthesized a new chlorinated polymer donor material BDT-T-Cl,to improve photoelectric conversion efficiency.[Methods] this study designed and synthesized a new chlorinated polymer donor material, BDT-T-Cl. By introducing chlorine atoms to regulate the molecular energy levels and aggregation behavior,the material's optoelectronic properties were significantly improved.[Findings] Structural characterization and optoelectronic performance tests showed that BDT-T-Cl exhibits broad absorption in the range of 362~568 nm. The absorption of the thin film state is red-shifted by 6~18 nm,and the intermolecular π-π stacking is enhanced.This synergistic effect promotes self-aggregation or ordered arrangement in the solid state.The HOMO energy level is lowered to -5.46eV ,resulting in a relatively high open-circuit voltage when BDT-T-Cl is used as the donor material in photovoltaic devices.[Conclusions] This study provides a new candidate material for high-eficiency OSCs by synthesizing the novel chlorinated polymer donor material BDT-T-Cl Keywords: organic solar cells; donor material; benzodithiophene; chlorine substitution; polymer

0 引言

化石能源枯竭与环境污染推动可再生能源发展，太阳能因储量大，环境友好等特性使其成为理想替代方案。（剩余6495字）