无机材料学报2023，Vol.38Issue(12)：1475-1482,8.DOI:10.15541/jim20230059
Dy3+掺杂SrGdGa3O7晶体的晶体生长,结构、光学和可见光荧光特性
Crystal Growth and Structural,Optical,and Visible Fluorescence Traits of Dy3+-doped SrGdGa3O7 Crystal
摘要
Abstract
Dy3+-doped SrGdGa3O7 crystal was successfully grown through the Czochralski method and investigated in detail for its structural and optical features.Its crystallographic lattice parameters were optimized by Rietveld refinement based on XRD data.Polarized absorption spectra,polarized emission spectra,and fluorescence decay curves of Dy:SrGdGa3O7 crystal were analyzed.Absorption cross-sections at 452 nm corresponding to π-and σ-polarization were computed as 0.594×10-21 and 0.555×10-21 cm2,respectively.Calculated effective J-O intensity parameters Ω2,Ω4,and Ω6 were 5.495×10-20,1.476×10-20,and 1.110×10-20 cm2,respectively.J-O analysis and emission spectra show that transition 4F9/2→6H13/2 of Dy:SrGdGa3O7 crystal has the highest fluorescence branching ratio and fluorescence intensity under 452 nm excitation within the visible spectral region,the emission cross-sections of π-and σ-polarization were 1.84×10-21 and 2.49×10-21 cm2 at the wavelength of 574 nm,respectively.The measured radiative lifetime and fluorescence decay time of the Dy3+:4F9/2 level were 0.768 and 0.531 ms with a quantum efficiency of 69.1%.All these results reveal that Dy3+:SrGdGa3O7 crystal is a promising material for yellow lasers pumped with blue laser diodes.关键词
晶体生长/Dy3+:SrGdGa3O7/光学性能/黄光发射Key words
crystal growth/Dy3+:SrGdGa3O7/optical properties/yellow emission分类
信息技术与安全科学引用本文复制引用
王海东,王燕,朱昭捷,李坚富,LAKSHMINARAYANA Gandham,涂朝阳..Dy3+掺杂SrGdGa3O7晶体的晶体生长,结构、光学和可见光荧光特性[J].无机材料学报,2023,38(12):1475-1482,8.基金项目
National Natural Science Foundation of China(51832007,51872286) （51832007,51872286）
National Key Research and Development Program of China(2022YFB3605704) （2022YFB3605704）
NSFC-Joint Funds for Regional Innovation and Development(U21A20508) （U21A20508）
Science and Technology Plan Leading Project of Fujian Province(2022H0043,2020H0036) （2022H0043,2020H0036）
Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(2021ZR204,2020zz108) （2021ZR204,2020zz108）
The 14th Five-year Plan Project of FJIRSM(E255KL0101) （E255KL0101）
Science and Technology Service Network Initiative(2019T3006) （2019T3006）
