Preparation and Optical Properties of Biomimic Hierarchical ZnO Column Arrays

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• 作者：Mei Yang ; Guangfu Yin ; Zhongbing Huang ; Yunqing Kang ; Xiaoming Liao ; Hui Wang
• 刊名：Crystal Growth & Design
• 出版年：2009
• 出版时间：February 4, 2009
• 年：2009
• 卷：9
• 期：2
• 页码：707-714
• 全文大小：536K
• 年卷期：v.9,no.2(February 4, 2009)
• ISSN：1528-7505

文摘

Hierarchical ZnO column arrays have been successfully prepared in aqueous solution through the appropriate dimercaptosuccinic acid (DMSA) addition time and concentration. The morphology of the ZnO columns and their photoluminescence (PL) are remarkably similar to biomineral structures in Ostrea rivularis shells. PL spectra of ZnO arrays exhibit near-band-edge emissions, and it is more obvious in ZnO columns obtained using 1−6 h addition time due to the high defects concentration. Furthermore, some carboxyl (COOH) groups of DMSA linked in ZnO columns could remain free to graft a bimolecule, which implies a great potential for optical emission and biosensors.