Comparison of Water-soluble CdSe Quantum Dots Made from Hydrothermal and Traditional Routes
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2007年第S1期
论文作者：王德平
文章页码：834 - 836
摘 要：<正>The comparison of traditional route to the simple synthesis of CdSe semiconductor nanocrystals,with the hydrothermal route,where the reaction temperature can be reached at 220℃,was presented in this paper.The optical properties of the water-soluble CdSe quantum dots from the hydrothermal and traditional were characterized by UV-vis absorption spectra,photoluminescence （PL） spectra and HRTEM techniques.The HRTEM results show that with the increase of the reaction temperature,the naocrystal defects decreased.The UV-vis absorption peak moved to long wave-length with the increase of reaction temperature. The photoluminescence （PL） spectra show that the wavelength of the bright point,the PL quantum yield （QY） increased when the nanocrystal defects decreased.The optical property data confirm that hydrothermal router is a preferable method to traditional route for preparing water-soluble CdSe quantum dots.
王德平
摘 要：<正>The comparison of traditional route to the simple synthesis of CdSe semiconductor nanocrystals,with the hydrothermal route,where the reaction temperature can be reached at 220℃,was presented in this paper.The optical properties of the water-soluble CdSe quantum dots from the hydrothermal and traditional were characterized by UV-vis absorption spectra,photoluminescence （PL） spectra and HRTEM techniques.The HRTEM results show that with the increase of the reaction temperature,the naocrystal defects decreased.The UV-vis absorption peak moved to long wave-length with the increase of reaction temperature. The photoluminescence （PL） spectra show that the wavelength of the bright point,the PL quantum yield （QY） increased when the nanocrystal defects decreased.The optical property data confirm that hydrothermal router is a preferable method to traditional route for preparing water-soluble CdSe quantum dots.
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