10.5% efficient polymer and amorphous silicon hybrid tandem photovoltaic cell

Jeehwan Kim, Ziruo Hong, Gang Li, Tze Bin Song, Jay Chey, Yun Seog Lee, Jingbi You, Chun Chao Chen, Devendra K. Sadana, Yang Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

53 Citations (Scopus)


Thin-film solar cells made with amorphous silicon (a-Si:H) or organic semiconductors are considered as promising renewable energy sources due to their low manufacturing cost and light weight. However, the efficiency of single-junction a-Si:H or organic solar cells is typically <10%, insufficient for achieving grid parity. Here we demonstrate an efficient double-junction photovoltaic cell by employing an a-Si:H film as a front sub-cell and a low band gap polymer:fullerene blend film as a back cell on planar glass substrates. Monolithic integration of 6.0% efficienct a-Si:H and 7.5% efficient polymer:fullerene blend solar cells results in a power conversion efficiency of 10.5%. Such high-efficiency thin-film tandem cells can be achieved by optical management and interface engineering of fully optimized high-performance front and back cells without sacrificing photovoltaic performance in both cells.
Original languageEnglish
Article number6391
JournalNature Communications
Publication statusPublished - 4 Mar 2015
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)


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