See-Through Ga2O3 Solar-Blind Photodetectors for Use in Harsh Environments 

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Tzu-Chiao Wei
  • Dung-Sheng Tsai
  • Parvaneh Ravadgar
  • Jr-Jian Ke
  • Meng-Lin Tsai
  • Der-Hsien Lien
  • Chiung-Yi Huang
  • Ray-Hua Horng

Detail(s)

Original languageEnglish
Article number3802006
Journal / PublicationIEEE Journal on Selected Topics in Quantum Electronics
Volume20
Issue number6
Online published2 May 2014
Publication statusPublished - Nov 2014
Externally publishedYes

Abstract

This paper demonstrates the high-temperature operation of fully transparent solar-blind deep ultraviolet (DUV) metal-semiconductor-metal (MSM) photodetectors (PDs) employing β-GaO3 thin films with transmittance up to 80% from 400 to 900 nm without image blurring. Even at a bias up to 200 V, the β-GaO3 MSM PDs show dark current as low as ∼1 nA. The dark current of β-GaO3 MSM PDs under significantly different oxygen concentration in the ambiences are similar, indicating that the high inertness to surface effect. Moreover, the responsivity and the working temperature of β-GaO3 MSM PDs at 10 V bias are 0.32 mA/W and as high as 700 K, respectively. Full recovery after 700-K operation demonstrates reliability and robustness of β-GaO3 PDs. The superior see-through features, electrical tolerance, inertness to surface effect, thermal stability, and solar-blind DUV photoresponse of β-GaO3 MSM PDs support the use in next-generation DUV PDs applications under harsh environments.

Research Area(s)

  • harsh environment, high temperature detection, photodetector, solar-blind

Citation Format(s)

See-Through Ga2O3 Solar-Blind Photodetectors for Use in Harsh Environments . / Wei, Tzu-Chiao; Tsai, Dung-Sheng; Ravadgar, Parvaneh; Ke, Jr-Jian; Tsai, Meng-Lin; Lien, Der-Hsien; Huang, Chiung-Yi; Horng, Ray-Hua; He, Jr-Hau.

In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 20, No. 6, 3802006, 11.2014.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review