High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blends

Gang Li, Vishal Shrotriya, Jinsong Huang, Yan Yao, Tom Moriarty, Keith Emery, Yang Yang

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

39 Citations (Scopus)


Converting solar energy into electricity provides a much-needed solution to the energy crisis the world is facing today. Polymer solar cells have shown potential to harness solar energy in a cost-effective way. Significant efforts are underway to improve their efficiency to the level of practical applications. Here, we report highly efficient polymer solar cells based on a bulk heterojunction of polymer poly(3-hexylthiophene) and methanofullerene. Controlling the active layer growth rate results in an increased hole mobility and balanced charge transport. Together with increased absorption in the active layer, this results in much-improved device performance, particularly in external quantum efficiency. The power-conversion efficiency of 4.4% achieved here is the highest published so far for polymer-based solar cells. The solution process involved ensures that the fabrication cost remains low and the processing is simple. The high efficiency achieved in this work brings these devices one step closer to commercialization.
Original languageEnglish
Title of host publicationMaterials for Sustainable Energy
Subtitle of host publicationA Collection of Peer-Reviewed Research and Review Articles from Nature Publishing Group
PublisherWorld Scientific Publishing Co.
Number of pages5
ISBN (Electronic)9789814317665
ISBN (Print)9789814317641, 9814317640
Publication statusPublished - 1 Jan 2010
Externally publishedYes

ASJC Scopus subject areas

  • Energy(all)
  • Engineering(all)
  • Materials Science(all)


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