Highly Efficient All-Polymer Solar Cells Enabled by p-Doping of the Polymer Donor
Source abstract
Abstract
In this study, we report all-polymer solar cells enabled by a joint effect of p-doping and ternary blend strategies. We apply the p-doping strategy for two material systems based on a new polymer donor named PNDT-T and a conventional polymer PBDB-T. In both cases, the efficiencies are improved significantly upon the p-doping of F4-TCNQ. The trace amount of F4-TCNQ contributes to the favorable trap-state filling, charge transfer, and transport but has a weaker effect on optimizing the morphology, leaving room for further improvement. Excitingly, via fabrication of the ternary blend devices based on PNDT-T0.7:PBDB-T0.3:DCNBT-IDT0.8 along with p-doping of F4-TCNQ in trace amounts, a significantly improved power conversion efficiency of 11.87% is realized. We find the optimized ternary blend shows high crystallinity, miscibility, and elevated phase separation comparable to those of the binary blend, thus facilitating the improved charge separation and transport.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, P. R. China
HKUST-Shenzhen Research Institute, No. 9 Yuexing first RD, Hi-tech Park, Nanshan, Shenzhen 518057, China
Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
Funding
State Key Laboratory of Polymer Materials Engineering · Ministry of Education of the People's Republic of China · National Natural Science Foundation of China
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