ZASP玻璃荧光体的激发波长依赖性及Dy^(3+)掺杂的荧光色彩调谐  

Excitation wavelength dependency of ZASP glass phosphors and the fluorescence color tunability of Dy^(3+) doping

作　　者：肖鹏[1] 张晶晶[1] 张海浜 王志强[1] 赵昕[1] 林海[1] 

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《光电子．激光》2017年第2期179-186,共8页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金项目(61275057);辽宁省教育厅科学技术研究(L2014226)资助项目

摘　　要：采用熔融法制备了锌铝锑磷酸盐(ZASP)玻璃荧光体,研究了其荧光色彩对激发波长的依赖性和Dy^(3+)掺杂的色彩调谐作用。短波紫外(UVC)和中波紫外(UVB)激发下,ZASP基质玻璃呈现Sb^(3+)的宽谱带发射,色彩位于蓝白光和蓝光区域。差异性光谱行为表明,玻璃中存在异质性的Sb^(3+)发光中心,导致玻璃荧光对激发波长产生依赖行为。Dy^(3+)引入ZASP玻璃后,产生归属于Dy^(3+)的约484和约574nm波长窄带发射,其在UVC和UVB激发下的发光有效性相当程度上归因于Sb^(3+)到Dy^(3+)的能量传递。Dy^(3+)的暖色成分使ZASP玻璃荧光总体上从蓝白区向白光区移动,同时也对荧光的激发波长依赖趋势产生显著影响,丰富了荧光发射色彩的多样性,为高质量荧光器件的研发提供了可能。Zinc aluminum antimony phosphate （ZASP） glass phosphors were prepared via the melt- quenching method and the dependence of fluorescence color on excitation wavelength is investigated. Un- der short-wave ultraviolet （UVC） and medium-wave ultraviolet （UVt3） excitation, ZASP host glasses present a broadband from Sb3＋. Their fluorescent color coordinates are located in bluish-white or blue spectral regions. Different spectral behaviors indicate that discrepant Sb3＋ emitting centers exist in the glass, which results in the dependence of glass fluorescence on excitation wavelength. When Dy3＋ was introduced into ZASP glasses,-484 nm and -574 nm narrow bands can be observed. The effectiveness of excitation in UVC and UVB spectral regions is attributed to the energy transfer from Sb3＋ to Dy3＋ to a great extent. Warm fluorescent component from Dy3＋ changes the fluorescence color of ZASP glas- ses from bluish-white to white spectral region,and Dya＋ doping has a remarkable influence on the fluo- rescence dependency on excitation wavelength. Dy3＋ doping enriches diversity of fluorescence color of ZASP glasses and provides probability for developing high-qualified fluorescent devices.

关 键 词：锌铝锑磷酸盐(ZASP)玻璃 宽带发射 激发波长依赖性 DY3+ 荧光色彩调谐 

分 类 号：O433[机械工程—光学工程]