標題: Formation of a Multi-Arm Branched Nanorod of ZnO on the Si Surface via a Nanoseed-Induced Polytypic Crystal Growth Using the Hydrothermal Method
作者: Tan, Sin Tee
Umar, Akrajas Ali
Yahaya, Muhammad
Salleh, Muhamad Mat
Yap, Chi Chin
Hong-Quan Nguyen
Dee, Chang-Fu
Chang, Edward Yi
Oyama, Munetaka
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Polytypism;Branched Nanorod;Orthorhombic Zn2SiO4 Nanoseed;Multipod Branches;ZnO Nanorods
公開日期: 1-Jul-2013
摘要: A branched nanorod of ZnO composed of multiple branches that projects from a single nanorod backbone can be realized by using a hydrothermal approach in the presence of a nanoseed with a special structure, namely multi-faceted orthorhombic Zn2SiO4. Orthorhombic Zn2SiO4 was prepared by annealing the ZnO nanoseed of size ca. 15 nnn on a Si substrate at a temperature of 900 degrees C in air for one hour. A typical branched nanorod was constructed by a hexagonal-and rectangular-shaped nanorod arm. HRTEM analysis on the branched structure indicated that the branches exhibited a different crystal growth direction [002] and [100], reflecting the presence of a polytypic growth process in the formation of the branched nanorod structure. The branched nanorod of ZnO and its feature-rich faceted property appears promising for solar cell, catalytic and sensing applications.
URI: http://dx.doi.org/10.1166/sam.2013.1521
http://hdl.handle.net/11536/22217
ISSN: 1947-2935
DOI: 10.1166/sam.2013.1521
期刊: SCIENCE OF ADVANCED MATERIALS
Volume: 5
Issue: 7
起始頁: 803
結束頁: 809
Appears in Collections:Articles