Solution‐Processable Pyrite FeS 2  Nanocrystals for the Fabrication of Heterojunction Photodiodes with Visible to NIR Photodetection | Zendy

Wang DiYan | Zendy; Jiang YouTing | Zendy; Lin ChihCheng | Zendy; Li ShaoSian | Zendy; Wang YawTyng | Zendy; Chen ChiaChun | Zendy; Chen ChunWei | Zendy

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Solution‐Processable Pyrite FeS 2 Nanocrystals for the Fabrication of Heterojunction Photodiodes with Visible to NIR Photodetection

Author(s) -

Wang DiYan,

Jiang YouTing,

Lin ChihCheng,

Li ShaoSian,

Wang YawTyng,

Chen ChiaChun,

Chen ChunWei

Publication year - 2012

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201200753

Subject(s) - materials science , photocurrent , photodetection , photodiode , heterojunction , nanocrystal , optoelectronics , fabrication , photodetector , pyrite , nanotechnology , medicine , alternative medicine , pathology , metallurgy

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 ).

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