Growth of Er3+/Yb3+ co-doped CaMoO4 thin film by a spray coating and its upconverting luminescence.
Polycrystalline Er3+/Yb3+ co-doped CaMoO4 (CaMoO4:Er3+/Yb3+) film was successfully fabricated by a spray coating method. Crystal structure, surface morphology and upconversion (UC) luminescent properties were investigated. Under 980-nm excitation, CaMoO4:Er3+/Yb3+ film exhibited strong green UC emissions at 530 and 550 nm (2H,11/2 --> 4S3/2 - 4I15/2) visible to the naked eye with a weak red emission near 660 nm (4F9/2 --> 4I15/2) corresponding to the intra 4f transitions of Er3+. A possible UC mechanism related to the pump-power dependence is discussed in detail.
Jun Ho
JH
Chung
Suk Hyun
SH
Kang
Kwang Bo
KB
Shim
Hyun
H
Cho
Seok Min
SM
Hwang
Jae Bin
JB
Lee
Dong Hyun
DH
Ka
Tae Wan
TW
Kim
Jung-Il
JI
Lee
Jeong Ho
JH
Ryu
D002118:Calcium / Q000737:chemistry*; D004871:Erbium / Q000737:chemistry*; D008163:Luminescent Measurements; D008982:Molybdenum / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013499:Surface Properties; D015018:Ytterbium / Q000737:chemistry*
C000599117:CaMoO4; D004871:Erbium; D008982:Molybdenum; D015018:Ytterbium; D010100:Oxygen; D002118:Calcium