Title of article
High enhancement of green upconversion luminescence of Li+/Er3+/Yb3+ tri-doped CaMoO4
Author/Authors
Jun Ho Chung، نويسنده , , JEONG HO RYU?†، نويسنده , , Jong Won Eun، نويسنده , , Jeong-Hoon Lee، نويسنده , , Sang-Yeop Lee، نويسنده , , Tae Hyung Heo، نويسنده , , KWANG BO SHIM، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2012
Pages
5
From page
695
To page
699
Abstract
The polycrystalline Li+/Er3+/Yb3+ tri-doped CaMoO4 were prepared by complex citrate-gel method. Under excitation of 980 nm, Li+/Er3+/Yb3+ tri-doped CaMoO4 upconversion (UC) phosphors exhibited weak red (656 and 670 nm), blue (410 nm) and strong green UC emission peaks (530 and 550 nm), respectively. The measured green emission intensity of Li+ doped CaMoO4 was 83 times higher than that of Li+ non-doped CaMoO4 due to local crystal field distortion or break around Er3+ ions. The optimum doping concentration of Li+ ions was investigated. Moreover, the effects of Li+ concentration for UC emission intensity were studied in detail.
Keywords
Upconversion luminescence , Tri-doped Li+ ion , UC enhancement , Crystal field distortion
Journal title
Materials Chemistry and Physics
Serial Year
2012
Journal title
Materials Chemistry and Physics
Record number
1064388
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