Metallated conjugated polymers as a new avenue towards high-efficiency polymer solar cells

Wai Yeung Wong, Xing Zhu Wang, Ze He, Aleksandra B. Djurišič, Cho Tung Yip, Kai Yin Cheung, Hai Wang, Chris S.K. Mak, Wai Kin Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

522 Citations (Scopus)

Abstract

Bulk heterojunction solar cells have been extensively studied owing to their great potential for cost-effective photovoltaic devices. Although recent advances resulted in the fabrication of poly(3-hexylthiophene) (P3HT)/fullerene derivative based solar cells with efficiencies in the range 4.4-5.0%, theoretical calculations predict that the development of novel donor materials with a lower bandgap is required to exceed the power-conversion efficiency of 10%. However, all of the lower bandgap polymers developed so far have failed to reach the efficiency of P3HT-based cells. To address this issue, we synthesized a soluble, intensely coloured platinum metallopolyyne with a low bandgap of 1.85 eV. The solar cells, containing metallopolyyne/fullerene derivative blends as the photoactive material, showed a power-conversion efficiency with an average of 4.1%, without annealing or the use of spacer layers needed to achieve comparable efficiency with P3HT. This clearly demonstrates the potential of metallated conjugated polymers for efficient photovoltaic devices.
Original languageEnglish
Pages (from-to)521-527
Number of pages7
JournalNature Materials
Volume6
Issue number7
DOIs
Publication statusPublished - 1 Jul 2007
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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