Isomeric Monomer Engineering of Regioregular Polymer Acceptors for Efficient All-Polymer Solar Cells

被引：1
|
作者：
Cui, Naizhe [1 ]
Li, Xiaoxiao [1 ]
Yang, Hang [1 ]
Feng, Jun [1 ]
Hu, Kewei [1 ]
Jiang, Xinyu [1 ]
Fan, Hongyu [1 ]
Wu, Yue [1 ]
Cui, Chaohua [1 ,2 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou Key Lab Novel Semicond Mat & Devices, Suzhou 215123, Peoples R China
[2] Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Jiangsu, Peoples R China
来源：
ACS APPLIED POLYMER MATERIALS | 2024年 / 6卷 / 04期
基金：
中国国家自然科学基金;
关键词：
all-polymer solar cells; polymerized small-moleculeacceptors; terminal groups; constitutional isomers; power conversion efficiency; WAVE-FUNCTION;
D O I：
10.1021/acsapm.3c02752
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, three polymerized small-molecule acceptors (PSMAs) (namely, PBTP-alpha, PBTP-beta, and PBTP-m) based on distinct building blocks are developed to investigate the influence of the regioisomerism of terminal group units (TCN-alpha and TCN-beta) on the physicochemical, photoelectric, and photovoltaic properties of PSMAs. Comparative analysis reveals that PBTP-alpha exhibited red-shifted absorption, enhanced intramolecular charge transfer effects, stronger crystallinity, and denser molecular stacking compared to the regioregular PBTP-beta and regiorandom PBTP-m. By utilizing PM6 as the polymer donor, the PBTP-alpha-based all-polymer solar cell (all-PSC) achieves a higher power-conversion efficiency (PCE) of 8.17% compared with that of the PBTP-beta- (5.99%) and PBTP-m-based (6.16%) devices.
引用
收藏
页码：2223 / 2231
页数：9
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