Ultraviolet electroluminescence from hetero p-n junction between a single ZnO microsphere and p-GaN thin film

Norihiro Tetsuyama, Koshi Fusazaki, Yasuaki Mizokami, Tetsuya Shimogaki, Mitsuhiro Higashihata, Daisuke Nakamura, Tatsuo Okada

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We report ultraviolet electroluminescence from a hetero p-n junction between a single ZnO microsphere and p-GaN thin film. ZnO microspheres, which have high crystalline quality, have been synthesized by ablating a ZnO sintered target. It was found that synthesized ZnO microspheres had a high-optical property and exhibit the laser action in the whispering gallery mode under pulsed optical pumping. A hetero p-n junction was formed between the single ZnO microsphere/ p-GaN thin film, and a good rectifying property with a turn-on voltage of approximately 6 V was observed in I-V characteristic across the junction. Ultraviolet and visible electroluminescence were observed under forward bias.

Original languageEnglish
Pages (from-to)10026-10031
Number of pages6
JournalOptics Express
Volume22
Issue number8
DOIs
Publication statusPublished - Apr 21 2014

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p-n junctions
electroluminescence
whispering gallery modes
optical pumping
thin films
optical properties
electric potential
lasers

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Tetsuyama, N., Fusazaki, K., Mizokami, Y., Shimogaki, T., Higashihata, M., Nakamura, D., & Okada, T. (2014). Ultraviolet electroluminescence from hetero p-n junction between a single ZnO microsphere and p-GaN thin film. Optics Express, 22(8), 10026-10031. https://doi.org/10.1364/OE.22.010026

Ultraviolet electroluminescence from hetero p-n junction between a single ZnO microsphere and p-GaN thin film. / Tetsuyama, Norihiro; Fusazaki, Koshi; Mizokami, Yasuaki; Shimogaki, Tetsuya; Higashihata, Mitsuhiro; Nakamura, Daisuke; Okada, Tatsuo.

In: Optics Express, Vol. 22, No. 8, 21.04.2014, p. 10026-10031.

Research output: Contribution to journalArticle

Tetsuyama, N, Fusazaki, K, Mizokami, Y, Shimogaki, T, Higashihata, M, Nakamura, D & Okada, T 2014, 'Ultraviolet electroluminescence from hetero p-n junction between a single ZnO microsphere and p-GaN thin film', Optics Express, vol. 22, no. 8, pp. 10026-10031. https://doi.org/10.1364/OE.22.010026
Tetsuyama, Norihiro ; Fusazaki, Koshi ; Mizokami, Yasuaki ; Shimogaki, Tetsuya ; Higashihata, Mitsuhiro ; Nakamura, Daisuke ; Okada, Tatsuo. / Ultraviolet electroluminescence from hetero p-n junction between a single ZnO microsphere and p-GaN thin film. In: Optics Express. 2014 ; Vol. 22, No. 8. pp. 10026-10031.
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