Luminescent Properties of Ce Doped LuAG Thin Films Prepared by Pechini Sol-gel Method
Compared to phosphors,scintillating films are shown as a better feature for high-resolution display devices with low loss diffusion.Ce3+ doped lutetium aluminum garnet (Lu3Al5O12,LuAG) scintillating films with different Ce3+ concentrations have been fabricated by Pechini sol-gel processing combined with the spin-coating technique and characterized by X-ray diffraction (XRD) and photoluminescence (PL) under excitation of UV-VIS light.The results of XRD patterns indicate that the specimen under study is a well-crystallized single-phase of cubic structure.Under an excitation of 442nm,it is found that the PL spectra is the typical Ce3+ emissions located in the 460-650 nm consisting of two emission bands due to the transitions from the lowest 5d excited state (2D) to the 4f ground state of Ce3+,which matches well with the sensitivity curve of the Si-photodiode.The luminescent intensity of LuAG∶ Ce3+ films varies with the Ce3+ contents and reaches the maximum at 1.0 mol% doped.With the increase of calcining temperature,the luminescence intensity in the PL spectra of LuAG∶Ce3+ films is found to increased accordingly due to the improved crystallization.
LuAG films Pechini sol-gel Photoluminescence
Qing Ma Siqing Shen Jianjun Xie Feizhong Ma Ying Shi Wei Xiong Jian Wang
School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
1516-1519
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）