Laser nano-soldering of ZnO nanowires and GaN thin film for fabrication of Hetero p-n junction

Tetsuya Shimogaki, Yuki Ishida, Kota Okazaki, Mitsuhiro Higashihata, Daisuke Nakamura, Tatsuo Okada

研究成果: Chapter in Book/Report/Conference proceedingChapter

抄録

We have investigated the laser nano soldering between ZnO nanowires and the p-type GaN thin film for the realization of the hetero p-n junction with low thermal loading. When the ZnO nanowires were irradiated with 355 nm laser beam at a fluence of 0.25 J/cm2, only a tip of the nanowires was melted due to the field enhancement effect near the tip of the nanowires, and a small bead with a diameter of 40 nm was formed at the tip of each nanowires. This phenomenon was applied to solder the junction between the ZnO nanowires and a p-type GaN thin film, by irradiating the junction through the GaN film with 375 nm laser beam which is transparent for the p-type GaN thin film but opaque for the ZnO nano-wires. As a result, the improvements of the I-V characteristics of the junction and the increment of the UV electro-luminescence were clearly observed, demonstrating the effectiveness of the nano soldering in fabrication of the hetero p-n junction between the ZnO nanowires and the GaN thin film.

本文言語英語
ホスト出版物のタイトルZnO Nanocrystals and Allied Materials
編集者M.S. Ramachandra Rao, Tatsuo Okada
ページ39-47
ページ数9
DOI
出版ステータス出版済み - 1 1 2014

出版物シリーズ

名前Springer Series in Materials Science
180
ISSN(印刷版)0933-033X

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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