Title of article :
Up-conversion luminescence properties of Yb3+–Ho3+ co-doped CaLa2ZnO5
Author/Authors :
Fangmin Li، نويسنده , , Lin Li، نويسنده , , Chongfeng Guo، نويسنده , , Ting Li، نويسنده , , Hyeon Mi Noh، نويسنده , , Jung Hyun Jeong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Abstract :
A class of Yb3+/Ho3+ ions co-doped CaLa2ZnO5 (CLZ) up-conversion (UC) phosphors were synthesized by sol–gel method. Under 980 nm excitation, UC spectra consist of two prominent emission bands centered at 545 and 662 nm originating from 5F4, 5S2→5I8 and 5F5→5I8 transitions of Ho3+ ion, respectively. The UC spectra as a function of the concentration of the dopants were also investigated to determine the optimal composition. The possible UC mechanism was proposed, and lifetime measurements were also carried out to support our proposal.
Keywords :
Phosphor , Up-conversion , energy transfer
Journal title :
Ceramics International
Journal title :
Ceramics International
