Mechanistic Insights into the Effect of Polymer Regioregularity on the Thermal Stability of Polymer Solar Cells

被引：13

作者：

Huang, Yu-Ching ^{[1
]}

Liu, Wei-Shin ^{[2
,3
]}

Tsao, Cheng-Si ^{[4
,5
]}

Wang, Leeyih ^{[2
,3
]}

机构：

[1] Ming Chi Univ Technol, Dept Mat Engn, New Taipei 24301, Taiwan

[2] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan

[4] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 10617, Taiwan

[5] Inst Nucl Energy Res, Longtan 32546, Taoyaun, Taiwan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 43期

关键词：

polymer solar cell; thermal stability; PCBM aggregation; GISAXS; GIWAXS; bulk heterojunction; nanostructure; METHYL-ESTER BLENDS; BULK-HETEROJUNCTION; STRUCTURAL EVOLUTION; FULLERENE; POLY(3-HEXYLTHIOPHENE); PERFORMANCE; MORPHOLOGY; STABILIZATION; POLYTHIOPHENE; DEVICES;

D O I：

10.1021/acsami.9b12482

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thermal stability is a bottleneck toward commercialization of polymer solar cells (PSCs). The effect of PCBM aggregation on a multilength scale on the bulk-heterojunction (BHJ) structure, performance, and thermal stability of PSCs is studied here by grazing-incidence small- and wide-angle X-ray scattering. The evolution of hierarchical BHJ structures of a blend film tuned by regioregularity of polymers from the as-cast state to the thermally unstable state is systematically investigated. The thermal stability of PSCs with high polymer regioregularity values can be improved because of the good mutual interaction between polymer crystallites and fullerene aggregates. The insights obtained from this study provide an approach to manipulate the film structure on a multilength scale and to enhance the thermal stability of P3HT-based PSCs.

引用

页码：40310 / 40319

页数：10

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