Solution-processable pyrite FeS 2 nanocrystals for the fabrication of heterojunction photodiodes with visible to NIR photodetection

Di Yan Wang, You Ting Jiang, Chih Cheng Lin, Shao Sian Li, Yaw Tyng Wang, Chia Chun Chen, Chun Wei Chen

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

A heterojunction photodiode with NIR photoresponse using solution processable pyrite FeS 2 nanocrystal ink is demonstrated which has the advantages of earth-abundance and non-toxicity. The device consists of a FeS 2 nanocrystal (NC) thin film sandwiched with semiconducting metal oxides with a structure of ITO/ZnO/FeS 2 NC/MoO 3/Au, which exhibits an excellent photoresponse with a spectral response extended to NIR wavelengths of up to 1150 nm and a high photocurrent/dark current ratio of up to 8000 at -1 V under AM1.5 illumination (100 mW cm -2).

Original languageEnglish
Pages (from-to)3415-3420
Number of pages6
JournalAdvanced Materials
Volume24
Issue number25
DOIs
Publication statusPublished - Jul 3 2012
Externally publishedYes

Fingerprint

Pyrites
Photodiodes
Nanocrystals
Heterojunctions
Fabrication
Dark currents
Photocurrents
Ink
Oxides
Lighting
Metals
Earth (planet)
Thin films
Wavelength
pyrite

Keywords

  • FeS nanocrystals
  • iron pyrite
  • photodetection
  • photodiodes
  • solution-processable

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Solution-processable pyrite FeS 2 nanocrystals for the fabrication of heterojunction photodiodes with visible to NIR photodetection. / Wang, Di Yan; Jiang, You Ting; Lin, Chih Cheng; Li, Shao Sian; Wang, Yaw Tyng; Chen, Chia Chun; Chen, Chun Wei.

In: Advanced Materials, Vol. 24, No. 25, 03.07.2012, p. 3415-3420.

Research output: Contribution to journalArticle

Wang, Di Yan ; Jiang, You Ting ; Lin, Chih Cheng ; Li, Shao Sian ; Wang, Yaw Tyng ; Chen, Chia Chun ; Chen, Chun Wei. / Solution-processable pyrite FeS 2 nanocrystals for the fabrication of heterojunction photodiodes with visible to NIR photodetection. In: Advanced Materials. 2012 ; Vol. 24, No. 25. pp. 3415-3420.
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AU - Chen, Chia Chun

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