Synthesis of Cu2SnSe3 Nanocrystals for Solution Processable Photovoltaic Cells

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• 作者：Mahshid Ahmadi ; Stevin S. Pramana ; Sudip K. Batabyal ; Chris Boothroyd ; Subodh G. Mhaisalkar ; Yeng Ming Lam
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：February 18, 2013
• 年：2013
• 卷：52
• 期：4
• 页码：1722-1728
• 全文大小：458K
• 年卷期：v.52,no.4(February 18, 2013)
• ISSN：1520-510X

文摘

This paper describes the synthesis of ternary chalcogenide Cu₂SnSe₃ nanocrystals as an alternative solar absorber material to conventional quaternary CuIn_xGa_1鈥?i>xSe₂. We used the hot coordination solvent method with hexadecylamine as the capping ligand for the first time for this material system. Using a variety of characterization techniques, such as X-ray diffraction, selected area electron diffraction, convergent beam electron diffraction, and Raman spectroscopy, the nanocrystals were found to be monoclinic Cu₂SnSe₃ with an optical energy band gap of 1.3 eV and have a narrow size distribution. These nanocrystals are shown to be photosensitive in the range of wavelengths corresponding to the solar spectrum, which makes them highly promising as alternative photon absorber materials for photovoltaic applications.