High efficiency organic/a-Si hybrid tandem solar cells with complementary light absorption

Wei Qin, Wei Yu, Wei Zi, Xiang Liu, Tao Yuan, Dong Yang, Shubo Wang, Guoli Tu, Jian Zhang, Frank S. Liu, Can Li

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Organic/amorphous silicon (a-Si) hybrid tandem solar cells have the potential to provide a highly efficient low-cost photovoltaic technology using abundant elements, and the technology is adaptable to large-scale processes. With their high open-circuit voltage (Voc) and adaptability to a broad solar spectrum, organic/a-Si tandem devices offer significantly improved performance. We have shown that organic/a-Si hybrid tandem solar cells with a complementary organic absorber can exhibit a power conversion efficiency (PCE) of up to 7.5%, with a fill factor (FF) of 72.3% and a Voc almost equivalent to the sum of the sub-cells under standard air mass (AM) 1.5 illumination. The high performance of the device results from the complementary absorption spectra of two sub-cells and well-matched energy levels of the intermediate layer. This study provides an effective design strategy for organic/a-Si hybrid tandem solar cells of improved efficiency.

Original languageEnglish (US)
Pages (from-to)15303-15307
Number of pages5
JournalJournal of Materials Chemistry A
Issue number37
StatePublished - Oct 7 2014

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)


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