自激活白光发射Ba_2TiP_2O_9发光材料的发光特性

作     者：刘春波 车广波 LIU Chun-Bo;CHE Guang-Bo

作者机构：吉林师范大学化学学院四平136000 

出 版 物：《无机化学学报》 (Chinese Journal of Inorganic Chemistry)

年 卷 期：2006年第22卷第3期

页      面：503-506页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

主　　题：发光材料 磷酸盐 钛离子 白光 余辉 

摘      要：The Ba2TiP2O9 phosphor was synthesized via the conventional high-temperature solid-state method. The Ba2TiP2O9 phosphor showed high luminance white-light emitting when excited under 254 nm radiation. Furthermore, obvious long-lasting phosphorescence could be observed when the UV excitation source had been removed. XRD and photoluminescence (PL) spectra as well as the luminance decay were used to characterize the synthesized phosphor. The results of XRD indicated that the products obtained under 1 100 ℃ for 3 h had a good crystallization. Both the PL spectra and luminance decay measurement revealed that this kind of phosphors was a new kind of white-light-emitting phosphor. The thermoluminescence properties have also been investigated. The energy level of the 352 K and 493 K TL peaks have also been calculated and found that their energy level values were 0.35 eV and 1.08 eV, respectively. The 352 K TL peak is responsible for the origin of the long-lasting phosphorescence.