Bandgap-Engineered in Indium-Gallium-Oxide Ultraviolet Phototransistors

Ting Hao Chang, Shoou-Jinn Chang, C. J. Chiu, Chih Yu Wei, Yen Ming Juan, Wen Yin Weng

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The electrical performance of amorphous indium gallium oxide (a-IGO) thin-film transistors applied as deep-ultraviolet (DUV) phototransistors is investigated. It was found that the bandgap of a-IGO can be engineered by altering its chemical composition. The performance of the phototransistors depended strongly on In2O3 content in the IGO film. When the indium content increases from 21% to 31%, the phototransistor cutoff red-shifted from 280 to 320 nm. The DUV-to-visible rejection ratio and photoresponsivity of the fabricated phototransistors were ∼105 and 0.18 A/W.

Original languageEnglish
Article number7041161
Pages (from-to)915-918
Number of pages4
JournalIEEE Photonics Technology Letters
Volume27
Issue number8
DOIs
Publication statusPublished - 2015 Apr 15

Fingerprint

Phototransistors
phototransistors
gallium oxides
Indium
Gallium
indium oxides
Energy gap
Oxides
Thin film transistors
rejection
Oxide films
indium
chemical composition
transistors
cut-off
gallium oxide
thin films
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Chang, T. H., Chang, S-J., Chiu, C. J., Wei, C. Y., Juan, Y. M., & Weng, W. Y. (2015). Bandgap-Engineered in Indium-Gallium-Oxide Ultraviolet Phototransistors. IEEE Photonics Technology Letters, 27(8), 915-918. [7041161]. https://doi.org/10.1109/LPT.2015.2400446
Chang, Ting Hao ; Chang, Shoou-Jinn ; Chiu, C. J. ; Wei, Chih Yu ; Juan, Yen Ming ; Weng, Wen Yin. / Bandgap-Engineered in Indium-Gallium-Oxide Ultraviolet Phototransistors. In: IEEE Photonics Technology Letters. 2015 ; Vol. 27, No. 8. pp. 915-918.
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Bandgap-Engineered in Indium-Gallium-Oxide Ultraviolet Phototransistors. / Chang, Ting Hao; Chang, Shoou-Jinn; Chiu, C. J.; Wei, Chih Yu; Juan, Yen Ming; Weng, Wen Yin.

In: IEEE Photonics Technology Letters, Vol. 27, No. 8, 7041161, 15.04.2015, p. 915-918.

Research output: Contribution to journalArticle

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