Solution-processed small-molecule solar cells: Breaking the 10% power conversion efficiency

Yang Yang, Yongsheng Liu, Chun Chao Chen, Ziruo Hong, Jing Gao, Yang Michael Yang, Huanping Zhou, Letian Dou, Gang Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

502 Citations (Scopus)


A two-dimensional conjugated small molecule (SMPV1) was designed and synthesized for high performance solution-processed organic solar cells. This study explores the photovoltaic properties of this molecule as a donor, with a fullerene derivative as an acceptor, using solution processing in single junction and double junction tandem solar cells. The single junction solar cells based on SMPV1 exhibited a certified power conversion efficiency of 8.02% under AM 1.5â€...G irradiation (100â€...mW cm -2). A homo-tandem solar cell based on SMPV1 was constructed with a novel interlayer (or tunnel junction) consisting of bilayer conjugated polyelectrolyte, demonstrating an unprecedented PCE of 10.1%. These results strongly suggest solution-processed small molecular materials are excellent candidates for organic solar cells.
Original languageEnglish
Article number3356
JournalScientific Reports
Publication statusPublished - 28 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • General


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