Time-resolved ultraviolet photoluminescence of ZnO/ZnGa2O4 composite layer

Qing Yang; Xiaohong Zhou; Takao Nukui; Yu Saeki; Sotaro Izumi; Atsushi Tackeuchi; Hirokazu Tatsuoka; Shuhua Liang

doi:10.1063/1.4864750

AIP Advances (Feb 2014)

Time-resolved ultraviolet photoluminescence of ZnO/ZnGa2O4 composite layer

Qing Yang,
Xiaohong Zhou,
Takao Nukui,
Yu Saeki,
Sotaro Izumi,
Atsushi Tackeuchi,
Hirokazu Tatsuoka,
Shuhua Liang

Affiliations

Qing Yang: Faculty of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
Xiaohong Zhou: Faculty of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, China
Takao Nukui: Department of Applied physics, Waseda University, Tokyo 169-8555, Japan
Yu Saeki: Department of Applied physics, Waseda University, Tokyo 169-8555, Japan
Sotaro Izumi: Department of Applied physics, Waseda University, Tokyo 169-8555, Japan
Atsushi Tackeuchi: Department of Applied physics, Waseda University, Tokyo 169-8555, Japan
Hirokazu Tatsuoka: Graduate School of Engineering, Shizuoka University, Hamamatsu 432-8561, Japan
Shuhua Liang: Faculty of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

DOI: https://doi.org/10.1063/1.4864750
Journal volume & issue: Vol. 4, no. 2
pp. 027101 – 027101-5

Abstract

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The ultraviolet photoluminescence of ZnO/ZnGa2O4 composite layer grown by the thermal oxidation of ZnS with gallium was investigated by the time-resolved photoluminescence as a function of measuring temperature and excitation power. With increase of excitation power, the D0X emission is easily saturated than the DAP emission from ZnO/ZnGa2O4 composite layer, and which is dramatically enhanced as compared with that from pure ZnO layer grown without gallium. The radiative recombination process with ultra-long lifetime controlled the carrier recombination of ZnO/ZnGa2O4 composite layer.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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