Sensitive solution-processed Bi2S3 nanocrystalline photodetectors

Gerasimos Konstantatos, Larissa Levina, Jiang Tang, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

284 Scopus citations


Solution-processed nanocrystal optoelectronic devices offer large-area coverage, low cost, and compatibility with a wide range of substrates. Recently, photodetectors and photovoltaics based on spin-coated nanoparticle films have shown tremendous progress in performance. However, high-performance devices reported to date have employed either Pb or Cd, raising concerns regarding environmental impact and regulatory acceptance. Herein we report a high-performance solution-processed photodetector based instead on Bi 2S3 nanocrystals. The devices exhibit photoconductive gain on the order of 10 combined with temporal response on the 10 ms time scale. The resultant solution-processed Bi2S3 nanorod photoconductive photodetectors are of interest in visible and near-infrared (NIR) wavelength applications requiring video-frame-rate temporal response.

Original languageEnglish (US)
Pages (from-to)4002-4006
Number of pages5
JournalNano letters
Issue number11
StatePublished - Nov 2008

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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