Synthesis and luminescence properties of Mn4+-dopant Ca14Zn6Ga10-xAlxO35solid solution

作     者：Yiyang Zhou Weiren Zhao Chongrui Lu Zifeng Liao 

作者机构：School of Physics and Optoelectronic EngineeringGuangdong University of Technology 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2018年第28卷第3期

页      面：301-307页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：Major Project for the Cooperative Innovation of Production, Education & Research of Guangzhou City (201704030106) Science and Technology Planning Projects of Guangdong Province of China (2014B050505020) 

主　　题：Crystal phase Quantum efficiency Red emission Blue shift 

摘      要：Mn4+-activated oxide phosphors,owing to their desirable spectral features,eco-friendly and low cost,are emerging as a new class of non-rare-earth red phosphors for warm white ***,these phosphors possess low photoluminescence quantum efficiency excited by blue chip *** we report an isostructural solid solution of Ca14Zn6Ga10-xAlxO35:0.15Mn4+（0≤x≤10）synthesized by a traditional solidstate reaction *** microstructure and luminescent performance of this red-emitting phosphor are investigated in detail with the aids of X-ray diffraction,diffuse reflection spectra,photoluminescence spectra/decay/QE,and temperature-dependent PL/QE *** shift of energy peaks of4A2→4T1and4A2→4T2transition is illustrated by the Tanabe–Sugano diagram and the configurational coordinate *** crystal field strength（Dq）and the Racah parameters（B and C）are carefully calculated to estimate the nephelauxetic effectβ*** we achieve external and internal quantum efficiencies as high as26.1%and 40.3%for Ca14Zn6Ga6Al4O35:0.15Mn4+excited by 466 nm,the highest one ever reported in Mn4+activated oxide phosphors under the similar condition.