Catalyst-free synthesis of ZnO microrod arrays on SiC substrate and their tunable photoluminescence by erosion process

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• 作者：Kaixing Zhu^a ; Wenjun Wang^a ; ^{wjwang@aphy.iphy.ac.cn"" rel=""nofollow} ; Xiaolong Chen^a ; Jun Liu^a ; Bo Song^b ; Liangbao Jiang^a ; Jiangang Guo^a ; Jinyang Cheng^c
• 关键词：Semiconducting materials ; ZnO ; Microrod ; Photoluminescence
• 刊名：Journal of Alloys and Compounds
• 出版年：2011
• 出版时间：16 June 2011
• 年：2011
• 卷：509
• 期：24
• 页码：6942-6945
• 全文大小：752 K

文摘

We present here the results on the preparation and characterization of highly oriented ZnO microrods fabricated on SiC substrate via a vapor solid route. These ZnO microrods grow along the c-axis perpendicularly to the substrate and are well separated from each other. Photoluminescence (PL) due to the band-gap emission (centered at 380 nm) and defect-related deep band emission (centered at 530 nm) were observed. Tunable PL intensities of these two bands were achieved by acid etching for varying durations.