面向太阳光全光谱应用铒掺杂硫卤玻璃上转换发光特性研究  

Upconversion Luminescence of Er^(3+) Doped Chalcohalide Glasses and Its Potential Application for Si Solar Cell Efficiency Enhancement

作　　者：张继红[1,2] 陶海征[1] 顾少轩[1] 张高科[2] 刘超[1] 赵修建[1] 

机构地区：[1]硅酸盐建筑材料国家重点实验室(武汉理工大学),武汉430070 [2]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《无机材料学报》2015年第3期245-248,共4页Journal of Inorganic Materials

基　　金：新世纪优秀人才支持计划(NCET-11-0687);国家自然科学基金(51172169;51372180);湖北省自然科学基金(20-13CFA008)~~

摘　　要：使用熔融淬冷法制备了Er3+掺杂Ge-Ga-S-Cs Br硫卤玻璃,研究了其在1550 nm激光激发下的上转换发光特性,观察到强的波长中心位于525和545 nm绿色发光及弱的中心波长位于660 nm红色发光,也观察到了中心波长分别位于810和980 nm的红外上转换发光。基于泵探光功率关系和能级寿命测试研究了发光机理,发现中间态能级寿命的延长是上转换发光效率增强的根本原因。使用全光谱光源测试了Si太阳能效率,当使用上转换发光层时,太阳能电池平均效率从7.28%上升至7.32%。结果显示所探索的稀土掺杂硫卤玻璃有望应用于硅太阳能电池效率增强领域。Er^3＋ doped Ge-Ga-S-CsBr chalcohalide glasses were fabricated by melt-quenching method. The proper- ties of upconversion luminescence under the excitation of 1550 nm laser were investigated. Strong green emissions centered at 525 nm and 545 nm, and weak red emission centered at 660 nm, were observed, along with near infrared emission bands centered at 810 nm and 980 nm. The up-conversion fluorescence was contributed to multi-photon involved process. The Si solar cell efficiency slightly increased from 7.28% （without upconversion layer） to 7.32% （using Er^3＋ doped 0.9（Ge2sGal0S65）-0.1CsBr glass as upconversion layer）. The results show that the investigated Er^3＋-doped chalcohalide glasses has a potential application for the enhancement of Si solar cell efficiency.

关 键 词：稀土离子 硫卤玻璃 上转换发光 

分 类 号：TQ174[化学工程—陶瓷工业]