Статья

High‐Efficiency P3HT‐Based All‐Polymer Solar Cells with a Thermodynamically Miscible Polymer Acceptor

Youle LiInstitute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaYue ZhangInstitute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaBaoqi WuInstitute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaShuting PangInstitute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaXiyue YuanInstitute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 P. R. ChinaChunhui DuanGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials South China University of Technology Guangzhou 510640 P. R. ChinaFei HuangGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials South China University of Technology Guangzhou 510640 P. R. ChinaYong CaoGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials South China University of Technology Guangzhou 510640 P. R. China

2022en

ABI

Аннотация

Poly(3‐hexylthiophene) (P3HT) is the most classical conjugated polymer for organic photovoltaics due to its low‐cost and synthetic scalability. However, P3HT‐based organic photovoltaics suffer from inferior device performance with respect to donor–acceptor copolymers. Particularly, the device performance of P3HT‐based all‐polymer solar cells (all‐PSCs) is rather poor due to the challenges in reaching ideal bulk‐heterojunction morphology. Herein, highly efficient P3HT‐based all‐PSCs by blending P3HT with a thermodynamic miscible polymer acceptor are reported. Among the three state‐of‐the‐art polymer acceptors (N2200, PYT, and DCNBT‐IDT), N2200 and PYT are thermodynamically immiscible with P3HT and thus led to excessive phase separation when blended with P3HT, whereas DCNBT‐IDT displayed proper thermodynamic miscibility with P3HT and generated the formation of well‐mixed fibrillary active layer morphology. As a result, a power conversion efficiency of 7.35% has been achieved by P3HT:DCNBT‐IDT blend, which is a new record for P3HT‐based all‐PSCs and largely higher than any previous results. Broad implication for further efficiency enhancement of P3HT‐based all‐PSCs is provided in the results and a promising pathway to realize highly efficient yet cost‐effective solar energy production is suggested.

Перевод пока недоступен

Идентификаторы

DOI: 10.1002/solr.202200073

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar