高等学校化学学报2018，Vol.39Issue(1)：25-31,7.DOI:10.7503/cjcu20170406
Na+,Li+,Bi3+掺杂CaWO4:Eu3+荧光粉的制备及发光特性
Preparation and Luminescence Properties of Na+, Li+, Bi3+Doped CaWO4:Eu3+Phosphors
摘要
Abstract
Na+, Li+, Bi3+ doped CaWO4 : Eu3+ phosphors were synthesized by microwave-assisted heating solid state reaction method. The microstructures of the sampless were characterized by XRD and SEM. The excitation spectra, emission spectra and energy levels of the samples were detected and analyzed by fluorescence spectrophotometer. The results showed that the samples all kept the tetragonal matrix. Compared with the particle size of CaWO4:Eu3+phosphor, the size of Na+, Li+, Bi3+ doped or codoped CaWO4:Eu3+phosphors all increased. Under 393 nm excitation, the luminescence intensities of samples doped with Na+and Li+ are 1.8 and 1.2 times that of undoped these ions, and the luminescence intensities all decreased for the sample codoped with Li+, Na+and the sample codoped with Li+, Bi3+. Under 254 and 393 nm excitation, the lifetime of the sample doped with Li+ was the shortest in all samples. For the same sample, the energy level lifetime under the 393 nm excitation was shorter than that under the 254 nm excitation.关键词
微波辅助加热法/CaWO4:Eu3+/发光特性/能级寿命Key words
Microwave-assisted heating method/CaWO4 : Eu3+/Luminescence property/Energy level lifetime分类
化学化工引用本文复制引用
王林香..Na+,Li+,Bi3+掺杂CaWO4:Eu3+荧光粉的制备及发光特性[J].高等学校化学学报,2018,39(1):25-31,7.基金项目
新疆维吾尔自治区自然科学基金(批准号: 2017D01A60)和新疆师范大学新型光源与微纳光学重点实验室项目(批准号:XJNUSYS092017B04)资助. Supported by the Natrural Science Foundation of Xinjiang Uygur Autonomous,China( No. 2017D01A60) and the Foundation of Key Labora-tory of Novel Light Source and Micro/Nano-Optics of Xinjiang Normal University,China(No.XJNUSYS092017B04). （批准号: 2017D01A60）
