Title of article
Effect of Yb3+ and Tm3+ concentrations on blue and NIR upconversion luminescence in Yb3+, Tm3+ co-doped CaMoO4
Author/Authors
Jun Ho Chung، نويسنده , , JEONG HO RYU?†، نويسنده , , Sang-Yeop Lee، نويسنده , , Suk Hyun Kang، نويسنده , , KWANG BO SHIM، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
6
From page
1951
To page
1956
Abstract
Polycrystalline Tm3+/Yb3+ co-doped CaMoO4 UC phosphors were successfully synthesized by a complex citrate-gel method and their upconversion (UC) luminescence was investigated. Under excitation at 980 nm, Tm3+/Yb3+ co-doped CaMoO4 showed bright blue emission near 475 nm generated by the 1G4→3H6 transition and strong NIR UC emission around 796 nm generated by the 3H4→3H6 transition, with weak red emission near 650 nm due to the 3F2→3H6 transition. The optimum doping concentrations of Tm3+ and Yb3+ for the highest UC luminescence were investigated, and the related UC mechanism of Tm3+/Yb3+ co-doped CaMoO4 depending on pump power was studied in detail.
Keywords
Upconversion (UC) luminescence , Upconversion mechanism , Tm3+/Yb3+ co-doped CaMoO4
Journal title
Ceramics International
Serial Year
2013
Journal title
Ceramics International
Record number
1277319
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