钨酸铅闪烁晶体垂直梯度凝固法生长及光学性能研究  

Optical Properties of PbWO_4 Crystals Grown by Vertical Gradient Freeze Method

作　　者：向卫东[1] 张瑜斐[2] 申慧[2] 徐家跃[2] 江国健[2] 邵明国[1] 

机构地区：[1]温州大学化学与材料工程学院,温州325035 [2]上海应用技术学院材料科学与工程学院,上海200235

出　　处：《人工晶体学报》2011年第2期343-346,358,共5页Journal of Synthetic Crystals

基　　金：浙江省国际科技合作项目(2008C14088);浙江省重点科技创新团队资金(2009R50010)资助项目;温州市科技局计划项目

摘　　要：本文报道了垂直梯度凝固法（VGF）生长PWO晶体的研究结果。通过优化工艺参数,成功获得直径25 mm、长度140 mm的PWO晶体。通过测试PWO晶体的XRD、透过光谱、荧光光谱等,研究了所得晶体的光学性能。结果表明：VGF法生长PWO晶体在350~420 nm处的光学透过率明显提高,荧光发光主峰位于435 nm,是快发光峰,但慢发光比例有所增加。This paper reported the growth and characterization of PWO crystal grown by the vertical gradient freeze method（VGF）.By optimizing the growth parameters,PWO crystal up to 25 mm in diameter and 140 mm in length was obtained successfully.The optical properties of as-grown crystal were measured,including transmission spectra,fluorescence spectra and so on.The results show that the transmittance of PWO（VGF） crystal in the 350-420 nm rang increases;the highest luminescence peak at 435 nm is the fast emission peak,but the proportion of slow light increases.

关 键 词：垂直梯度凝固法 钨酸铅晶体 光学性能 

分 类 号：O734[理学—晶体学]