Journal article

An Obvious Improvement in the Performance of Ternary Organic Solar Cells with "Guest" Donor Present at the "Host" Donor/Acceptor Interface

Peng-Qing Bi, Bo Wu, Fei Zheng, Wei-Long Xu, Xiao-Yu Yang, Lin Feng, Furong Zhu, Xiao-Tao Hao

ACS APPLIED MATERIALS & INTERFACES | AMER CHEMICAL SOC | Published : 2016

Abstract

A small-molecule material, 7,7-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene-2,6-diyl)bis(6-fluoro-4-(5'-hexyl-[2,2'-bithiophen]-5-yl)benzo-[c] [1,2,5]thiadiazole) (p-DTS(FBTTH2)2), was used to modify the morphology and electron-transport properties of the polymer blend of poly(3-hexythiophene) (P3HT) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) bulk heterojunctions. As a result, a 24% increase in the power-conversion efficiency (PCE) of the p-DTS(FBTTH2)2:P3HT:PC71BM ternary organic solar cells (OSCs) is obtained. The improvement in the performance of OSCs is attributed to the constructive energy cascade path in the ternary system that benefits an efficient Förster re..

View full abstract

University of Melbourne Researchers

Grants

Awarded by National Natural Science Foundation of China


Awarded by Research Fund for the Doctoral Program of Higher Education


Awarded by Research Grants Council of Hong Kong Special Administrative Region, China


Funding Acknowledgements

This work was supported by the National Natural Science Foundation of China (No.11574181, 61275037), Research Fund for the Doctoral Program of Higher Education (Grant No. 20130131110004), the "National Young 1000 Talents" Program of China, and Research Grants Council of Hong Kong Special Administrative Region, China, Project No. T23-713/11, GRF/12303114.