Green upconversion luminescence from poly-crystalline Yb3+, Er3+ Co-doped CaMoO4
- Title
- Green upconversion luminescence from poly-crystalline Yb3+, Er3+ Co-doped CaMoO4
- Author
- 심광보
- Keywords
- Green upconversion (UC) luminescence; Er3+/Yb3+ co-doped CaMoO4; UC luminescent mechanism
- Issue Date
- 2012-05
- Publisher
- Elsevier Science B.V., Amsterdam.
- Citation
- Journal of Alloys and Compounds, 2012, 522, P.30-34
- Abstract
- The upconversion (UC) luminescence properties of polycrystalline Er3+/Yb3+ co-doped CaMoO4 synthesized by a complex citrate gel method were investigated in detail. Under 980 nm excitation, Er3+/Yb3+ co-doped CaMoO4 has exhibited a weak red emission near 670 nm and strong green UC emissions at 530 and 550 nm, corresponding to the intra 4f transitions of Er3+ (4F9/2, 2H11/2, 4S3/2) → Er3+ (4I15/2). The optimum doping concentrations of Er3+ and Yb3+ were determined to result in the highest UC luminescence and a possible UC mechanism of Er3+/Yb3+ co-doped CaMoO4 depending on the pump power dependence is discussed in detail.
- URI
- https://www.sciencedirect.com/science/article/pii/S0925838812001314?via%3Dihubhttp://hdl.handle.net/20.500.11754/49925
- ISSN
- 0925-8388
- DOI
- 10.1016/j.jallcom.2012.01.059
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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