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. 2012 Jul 3;24(25):3415-20.
doi: 10.1002/adma.201200753. Epub 2012 Jun 5.

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

Di-Yan Wang  1 , You-Ting Jiang, Chih-Cheng Lin, Shao-Sian Li, Yaw-Tyng Wang, Chia-Chun Chen, Chun-Wei Chen
Affiliations

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

Di-Yan Wang et al. Adv Mater. .

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) ).

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