White Light Emission Characteristics of Tb3+/Sm3+ Co-Doped Glass Ceramics Containing YPO4 Nanocrystals
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2017年第5期
论文作者：Zhixiong Zhang Yuepin Zhang Cheng Wang Zhigang Feng Weihuan Zhang Haiping Xia
文章页码：432 - 437
摘 要：The Tb3+/Sm3+ single-doped and co-doped glasses and glass ceramics containing YPO4 nanocrystals have been synthesized by melt quenching method. The structural and luminescent properties of these glass specimens were investigated. Under 375 nm wavelength excitation, the emission spectra combined with blue, green and red bands were observed, which achieved the white light emission. Moreover, the energy transfer between Tb3+ and Sm3+ions was validated by decay lifetime measurement and energy level diagram.The color coordinates（x = 0.333, y = 0.333）, correlated color temperature（5595 K） and the color rendering index（Ra = 80.5） indicated that the glass ceramics were considered to be good lighting source. Hence,the YPO4- based Tb3+/Sm3+ co-doped glass ceramics can act as potential matrix materials for white lightemitting diodes under ultraviolet excitation.
Zhixiong Zhang，Yuepin Zhang，Cheng Wang，Zhigang Feng，Weihuan Zhang，Haiping Xia
Key Laboratory of Photo-electronic Materials, Ningbo University
摘 要：The Tb3+/Sm3+ single-doped and co-doped glasses and glass ceramics containing YPO4 nanocrystals have been synthesized by melt quenching method. The structural and luminescent properties of these glass specimens were investigated. Under 375 nm wavelength excitation, the emission spectra combined with blue, green and red bands were observed, which achieved the white light emission. Moreover, the energy transfer between Tb3+ and Sm3+ions was validated by decay lifetime measurement and energy level diagram.The color coordinates（x = 0.333, y = 0.333）, correlated color temperature（5595 K） and the color rendering index（Ra = 80.5） indicated that the glass ceramics were considered to be good lighting source. Hence,the YPO4- based Tb3+/Sm3+ co-doped glass ceramics can act as potential matrix materials for white lightemitting diodes under ultraviolet excitation.
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