(1. 桂林電子科技大學(xué) 材料科學(xué)與工程學(xué)院 廣西信息材料重點(diǎn)實(shí)驗(yàn)室，桂林 541004；
2. 桂林電子科技大學(xué) 信息與通訊學(xué)院，桂林 541004)
摘 要: 以磷酸二氫銨、氧化鋅、碳酸鍶、六水硝酸鈰、七氧化四鋱和碳酸錳為原料，用熔融-可控析晶法制備了Ce/Tb/Mn共摻的ZnO-SrO-P2O5體系發(fā)光玻璃陶瓷材料。采用X射線衍射儀、熒光分光光度計(jì)和國際照明委員會(CIE)色度圖對其相的組成、光譜學(xué)和發(fā)光特性進(jìn)行研究。結(jié)果表明：經(jīng)(500 ℃, 2 h)+(570 ℃, 2 h)熱處理后樣品主晶相為SrZnP2O7。在波長358 nm的紫外光激發(fā)下，在Ce/Tb/Mn共摻雜玻璃陶瓷的發(fā)射光譜中同時觀測到了藍(lán)光、綠光和紅橙光的發(fā)射帶，這些發(fā)射帶的混合實(shí)現(xiàn)了白光的全色發(fā)射顯示。此外，Ce/Tb/Mn三元共摻雜玻璃陶瓷的發(fā)光顏色隨著Mn2+含量的增加從藍(lán)白光逐漸過渡到白光，實(shí)現(xiàn)了發(fā)光顏色的調(diào)控。制備的玻璃陶瓷材料有望用于白光發(fā)光二極管和其他光學(xué)儀器。
關(guān)鍵字: 玻璃陶瓷；磷酸鹽；白光發(fā)光二極管；光致發(fā)光
（1. Guangxi Key Laboratory of Information Materials, School of Materials Science and Engineering,
Guilin University of Electronic Technology, Guilin 541004, China;
2. School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China）
Abstract:Ce/Tb/Mn co-doped ZnO-SrO-P2O5 system luminescent glass-ceramic materials were prepared by melting and controlled crystallization method using NH4H2PO4, ZnO, SrCO3, Ce(NO3)3？6H2O, Tb4O7 and MnCO3 as raw materials. The phase composition, spectroscopic characterizations and luminescence properties of the glass-ceramics were investigated by X-ray diffraction diffractometer (XRD), fluorescent spectrometer and International Commission on Illumination (CIE) chromaticity diagram. The results show that the main crystalline phases are SrZnP2O7 for all samples subjected to heat treatment of (500 ℃, 2 h)+(570 ℃, 2 h). Blue, green, and reddish orange emission bands are observed in the photoluminescent spectra of Ce/Tb/Mn co-doped glass-ceramics excited by ultraviolet light with wavelength of 358 nm, and the combination of these three emitting bands allows the realization of white light emitting. Moreover, luminescent color gradually from blue white to white emission is observed in the photoluminescent spectra of Ce/Tb/Mn co-doped glass-ceramics with increasing concentration of Mn2+, which indicates that the tunable luminescent color can be achieved. The as-prepared glass-ceramic materials are promising to be applied to white light-emitting diodes and other optical devices.
Key words: glass-ceramics; phosphate; white light emitting diode; photoluminescence
