Effect of laser annealing on optical properties of ion-implanted ZnO nanorods

Tetsuya Shimogaki, M. Higashihata, Daisuke Nakamura, Tanemasa Asano, T. Okada

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

We report on the demonstration of the effectiveness of nanosecond laser annealing on optical properties of phosphorus ion (P+)-implanted ZnO nanorods (NRs). Vertically-alligned ZnO NRs have been synthesized by nanoparticle-assisted pulsed laser deposition (NAPLD) on c-plane sap-phire substrates. The pre-laser annealing was performed with the third harmonic (355 nm) of a Q-witched Nd:YAG laser at a fluence of 100mJ/cm2 for improving optical property and weakening n-type conduction of as-grown ZnO NRs. P+-ions were implanted into the ZnO NRs followed by the post-laser annealing in the same way as the pre-laser annealing. The top part of the ZnO NRs were melted and recrystallized by laser annealing. The transitions of properties were investigated by the scanning electron microscope, the room temperature photoluminescence spectra, X-ray diffraction patterns, and I-V measurement. As a result, it turned out that laser annealing has potentiality for improving optical property and compensating donor-vacancies without reducing crystalline quality. Moreover, the effectiveness of post-laser annealing on recovering ion-implanted ZnO layer and ac-tivating acceptors was demonstrated. It is promising that straightforward and stable method of fab-ricating ZnO-based UV-LED is established by applications of nanosecond laser annealing process.

元の言語英語
ページ(範囲)75-78
ページ数4
ジャーナルJournal of Laser Micro Nanoengineering
8
発行部数1
DOI
出版物ステータス出版済み - 1 1 2013

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laser annealing
Nanorods
nanorods
Optical properties
Annealing
optical properties
Lasers
Ions
ions
Pulsed laser deposition
pulsed laser deposition
phosphorus
YAG lasers
Diffraction patterns
fluence
Vacancies
light emitting diodes
Light emitting diodes
diffraction patterns
Phosphorus

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

これを引用

Effect of laser annealing on optical properties of ion-implanted ZnO nanorods. / Shimogaki, Tetsuya; Higashihata, M.; Nakamura, Daisuke; Asano, Tanemasa; Okada, T.

:: Journal of Laser Micro Nanoengineering, 巻 8, 番号 1, 01.01.2013, p. 75-78.

研究成果: ジャーナルへの寄稿記事

Shimogaki, Tetsuya ; Higashihata, M. ; Nakamura, Daisuke ; Asano, Tanemasa ; Okada, T. / Effect of laser annealing on optical properties of ion-implanted ZnO nanorods. :: Journal of Laser Micro Nanoengineering. 2013 ; 巻 8, 番号 1. pp. 75-78.
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