引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1571次   下载 1110 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Optical Properties of CdS Nanobelts and Nanosaws Synthesized by Thermal Evaporation Method
Zhi-wei Peng*,Bing-suo Zou
Author NameAffiliationE-mail
Zhi-wei Peng* School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China zhiwei_peng@yahoo.com.cn 
Bing-suo Zou Key Lab for Micro-Nano Optoeletronic Devices of MOE, Hunan University, Changsha 410082, China  
Abstract:
By a simple one-step H2-assisted thermal evaporation method, high quality CdS nanos-tructures have been successfully fabricated on Au coated Si substrates in large scale. The as-synthesized CdS nanostructures consisted of sword-like nanobelts and toothed nanosaws with a single-crystal hexagonal wurtzite structure. The deposition temperature played an important role in determining the size and morphology of the CdS nanostructures. A combi-nation of vapor-liquid-solid and vapor-solid growth mechanisms were proposed to interpret the formation of CdS nanostructures. Photoluminescence measurement indicated that the nanobelts and nanosaws have a prominent green emission at about 512 nm, which is the band-to-band emission of CdS. The waveguide characteristics of both types of CdS nanos-tructures were observed and discussed.
Key words:  CdS nanostructures, Thermal evaporation, Photoluminescence, Optical waveguide
FundProject:
CdS纳米带和纳米锯的热蒸发法的合成和光学性质研究
彭智伟*,邹炳锁
摘要:
利用氢气辅助的一步热蒸发法,在镀有金膜的硅片上制备出大量的CdS纳米结构. CdS纳米结构由纤锌矿结构的CdS纳米带和纳米锯组成. 研究表明沉积温度对CdS纳米结构的形貌和尺寸具有重要影响. 用气-液-固和气-固复合生长机理解释了CdS纳米结构的形成过程.光致发光测试表明CdS纳米带和纳米锯均发射出波长为512 nm的很强的绿色发光峰,对应于CdS的带-带跃迁. 同时对CdS纳米结构的光波导性质也进行了观察和讨论.
关键词:  CdS纳米结构,热蒸发,光致发光,光波导
DOI:10.1088/1674-0068/25/02/226-230
分类号: