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

doi:10.1002/adma.201200753

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

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

117 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 language	English
Pages (from-to)	3415-3420
Number of pages	6
Journal	Advanced Materials
Volume	24
Issue number	25
DOIs	https://doi.org/10.1002/adma.201200753
Publication status	Published - 2012 Jul 3

Keywords

FeS nanocrystals
iron pyrite
photodetection
photodiodes
solution-processable

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1002/adma.201200753

Cite this

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

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).",

keywords = "FeS nanocrystals, iron pyrite, photodetection, photodiodes, solution-processable",

author = "Wang, {Di Yan} and Jiang, {You Ting} and Lin, {Chih Cheng} and Li, {Shao Sian} and Wang, {Yaw Tyng} and Chen, {Chia Chun} and Chen, {Chun Wei}",

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AU - Wang, Di Yan

AU - Jiang, You Ting

AU - Lin, Chih Cheng

AU - Li, Shao Sian

AU - Wang, Yaw Tyng

AU - Chen, Chia Chun

AU - Chen, Chun Wei

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AB - 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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