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

页码：2223 / 2231

页数：9

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