title: Green lighting upconversion luminescence of Yb3+, Er3+ co-doped BaMoO4.
abstract: A green lighting upconversion (UC) system was successfully achieved from Er3+/Yb3+ co-doped BaMoO4 synthesized by the complex citrate-gel method. Under 980 nm laser excitation, the Er3+/Yb3+ co-doped BaMoO4 emitted strong green luminescence around 530 and 550 nm and weak red luminescence near 660 nm, which corresponded to the intra 4f-4f transitions in Er3+. Optimal doping concentrations of Er3+/Yb3+ into the BaMoO4 matrix were investigated. Moreover, based on excitation power dependence, the UC luminescent mechanism in the Er3+/Yb3+ co-doped BaMoO4 was presented in detail.
authors.affiliation: Department of Materials Science and Engineering, Hanyang University, 17 Haengdang-Dong Seongdong-Gu, Seoul 133-791, Korea.
authors.forename: Jun Ho
authors.initials: JH
authors.lastname: Chung
authors.forename: Sang Yeop
authors.initials: SY
authors.lastname: Lee
authors.forename: Suk Hyun
authors.initials: SH
authors.lastname: Kang
authors.forename: Sae Am
authors.initials: SA
authors.lastname: Kim
authors.forename: Kwang Bo
authors.initials: KB
authors.lastname: Shim
authors.forename: Hyun
authors.initials: H
authors.lastname: Cho
authors.forename: Jung-Il
authors.initials: JI
authors.lastname: Lee
authors.forename: Jeong Ho
authors.initials: JH
authors.lastname: Ryu