Synthesis, Characterization and Photovoltaic Behavior of a Very Narrow-Bandgap Metallopolyyne of Platinum: Solar Cells with Photocurrent Extended to Near-Infrared Wavelength

Xing Zhu Wang, Cheuk Lam Ho, Lei Yan, Xi Chen, Xun Chen, Kai Yin Cheung, Wai Yeung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


The synthesis, characterization and photophysics of a solution-processable metallopolyyne of platinum (P1) functionalized with the dioctyloxyphenyl-substituted thienopyrazine-thiophene hybrid spacer and its model molecular complex (M1) are described. Such metallopolymer P1 possesses a very low bandgap of 1.50 eV which extends towards the near-infrared (NIR) range of the solar spectrum, and represents one of the lowest optical bandgaps reported for metallopolyynes. With the capability of spanning a wider solar-radiation range, P1 can be used to fabricate efficient solar cells with power conversion efficiencies (PCEs) of up to 0.46% under air mass (AM1.5) simulated solar illumination. The electronic effect of the central heterocyclic ring sandwiched between the two thiophene units on the optical properties of these metallopolyynes has been investigated. The present study provides a good approach towards achieving conjugated polymeric materials with a broad solar absorption and demonstrates the potential of low-bandgap metallopolyynes for simultaneous visible and NIR light power generation.
Original languageEnglish
Pages (from-to)478-487
Number of pages10
JournalJournal of Inorganic and Organometallic Polymers and Materials
Issue number3
Publication statusPublished - 2 Jun 2010
Externally publishedYes


  • Low-bandgap
  • Metallopolyyne
  • Solar cells
  • Thienopyrazine
  • Thiophene

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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