Controlled growth of Cu₂S hexagonal microdisks and their optical properties

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• 作者：Fenghua Zhao ; Xijian Chen ; Ningsheng Xu ; Ping Lu ; Jian-Guo Zheng ; Qiang Su and Mingmei Wu
• 刊名：Journal of Physics and Chemistry of Solids
• 出版年：2006
• 出版时间：August 2006
• 年：2006
• 卷：67
• 期：8
• 页码：1786-1791
• 全文大小：528 K

文摘

Chalcocite Cu₂S particles have been prepared hydro- and solvo-thermally from a copper plate in pure water, mixed solvents of water and ethylenediamine (en), and pure en, respectively. Their structural and optical properties have been characterized by a combination of powder X-ray diffraction, scanning and transmission electron microscopy (SEM and TEM), and VIS-NIR diffuse reflectance spectroscopy. Their growth and optical properties were found to be highly dependent on synthesis conditions and in particular the en/water volume ratio. For the first time, Cu₂S particles wish the shape of hexagonal microdisks were synthesized in a mild hydrothermal condition and these crystalline particles were found to exhibit unique optical properties.