Synthesis of hybrid nano-structured ZnO crystal by nanoparticle-assisted pulsed laser deposition and their application

纳米粒子辅助脉冲激光沉积合成杂化纳米结构ZnO晶体及其应用

• 批准号: 18360151
• 负责人: OKADA Tatsuo
• 金额: $ 9.66万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360151/
• 关键词: ZnO; nanowires; nanorods; field emission; nano-laser; ZnO; マイクロキヤビティ; Pd; ナノ微粒子; ナノロッド; 誘電泳動; アブレーション

The aim of this project is to establish the basis for the development of electro-optic devices using nano-structured ZnO crystals which are synthesized by a newly-developed nanoparticle- assisted pulsed-laser deposition method. The subjects and the achievements are summarized as follows.1) Controlled growth of ZnO nanowires We have succeeded in synthesizing vertically-aligned and horizontally- aligned ZnO nanowires using pre-annealed c-cut sapphire and a-cut sapphire substrates, respectively. It was found that the surface density of the nanowires can be controlled by changing the laser fluence and repetition rate for laser ablation.2) Field emission from nanowires It was confirmed that the vertically-aligned ZnO nanowires have a capability of field emission and a visible light emitting device are fabricated using a vertically-aligned ZnO nanowire field emitter.2) Handling of nanowires In order to observe the photoluminescence from a single ZnO nanowire, a handling technique for ZnO nanowires was developed. The nanowires were removed from the growth substrate by ultra-sonication in ethanol and single nanowire was collected onto a pair of microelectrodes by dielectrophoresis force.3) Laser action in single ZnO nanowire When single nanowire was excited by ns-pulse at 355 nm, laser action with a help of micro-cavity effect in the nanowire was observed. A threshold excitation power of 13.6 mW per single nanowire was obtained.

本项目的目的是为利用最新发展的纳米粒子辅助脉冲激光沉积方法合成的纳米结构的氧化锌晶体开发电光器件奠定基础。1)氧化锌纳米线的可控生长我们分别利用预退火的c切割蓝宝石和a切割蓝宝石衬底，成功地合成了垂直取向和水平取向的氧化锌纳米线。2)纳米线的场发射证实了垂直排列的氧化锌纳米线具有场发射的能力，并利用垂直排列的氧化锌纳米线制作了可见光发射器件。2)纳米线的处理为了观察单个氧化锌纳米线的光致发光，开发了一种处理技术。在乙醇中超声将纳米线从生长衬底上移除，并通过介电泳力将单个纳米线收集到一对微电极上。3)单个纳米线在355 nm纳秒脉冲激励下的激光作用，观察到纳米线中的激光作用借助于纳米线中的微腔效应。得到了每根纳米线的阈值激发功率为13.6 mW。

项目成果

「研究成果報告書概要(和文)」より

摘自《研究结果报告摘要（日文）》

• 发表时间: 2005
• 作者: Kawauchi;et. al.;Nishimura et al.;Dezawa et al.;Yoshizawa et al.;星野 幹雄;星野 幹雄
• 通讯作者: 星野 幹雄

パルスレーザ堆積法により作製したZnOナノ結晶の低温発光特性

脉冲激光沉积法制备ZnO纳米晶的低温发光性能

• 发表时间: 2007
• 作者: 野口 公平;境健 太郎;福山 敦彦;碇哲 雄;岡田 龍雄
• 通讯作者: 岡田 龍雄

Nano-wire pig-tailed ZnO nano-rods synthesized by laser ablation

• DOI: 10.1016/j.tsf.2005.08.340
• 发表时间: 2006-05
• 期刊: Thin Solid Films
• 影响因子: 2.1
• 作者: T. Okada;K. Kawashima;Y. Nakata

Density-Controlled Growth of ZnO Nanowires Via Nanoparticle-Assisted Pulsed-Laser Deposition and Their Optical Properties",EM-Nano(June,2007)長野

通过纳米粒子辅助脉冲激光沉积实现 ZnO 纳米线的密度控制生长及其光学特性”，EM-Nano（2007 年 6 月）长野

• 发表时间: 2007
• 作者: Ruiqian Guo;Jun Nishimura;Mitsuhiro Higashihata;Daisuke Nakamura;Tatsuo Okada
• 通讯作者: Tatsuo Okada

Aligned. Growth of ZnO Nanowires in N_2 Background Gas by Laser Ablation Depositions

对齐。

• 发表时间: 2007
• 作者: Ruiqian;Guo;Jun;Nishimura;Mitsuhiro;Higashihata;Daisuke;Nakamura;Tatsuo;Okada
• 通讯作者: Okada