Zinc Oxide Nano-Cauliflower Array with Room Temperature Ultraviolet Light Emission

详细信息    查看全文

• 作者：Masanobu Izaki ; Mitsuru Watanabe ; Hiroki Aritomo ; Ippei Yamaguchi ; Shunsuke Asahina ; Tsutomu Shinagawa ; Masaya Chigane ; Minoru Inaba ; Akimasa Tasaka
• 刊名：Crystal Growth & Design
• 出版年：2008
• 出版时间：April 2008
• 年：2008
• 卷：8
• 期：4
• 页码：1418 - 1421
• 全文大小：614K
• 年卷期：v.8,no.4(April 2008)
• ISSN：1528-7505

文摘

A novel geometry of a ZnO nanocauliflower array has been fabricated by an electrochemical route of the electrophoresis deposition of anionic polystyrene spheres on a conductive glass substrate followed by the electrodeposition of ZnO in aqueous solutions. The structural and optical characteristics were investigated by using X-ray diffraction, field-emission scanning electron microscopy, and photoluminescence spectrum measurements. The ZnO nanocauliflower was constructed of a polystyrene sphere core and a shell of ZnO hexagonal columns radially grown from the sphere surface. The ZnO nanocauliflower array possessed a high quality that emits ultraviolet light at a photon energy of 3.3 eV at room temperature due to the recombination of bound excitons.