Infrared-to-violet upconversion from Yb3+ and Er3+ codoped amorphous fluoride film prepared by pulsed laser deposition

Autor:	Weiping Qin, Changfeng Wu, Guanshi Qin, E. Shulin, Shihua Huang, Shaozhe Lu, Baojiu Chen, Dan Zhao
Rok vydání:	2002
Předmět:	Materials science Photoluminescence Infrared Analytical chemistry General Physics and Astronomy medicine.disease_cause Photon upconversion Pulsed laser deposition Amorphous solid chemistry.chemical_compound chemistry medicine Fluoride Deposition (law) Ultraviolet
Zdroj:	Journal of Applied Physics. 92:6936-6938
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1521801
Popis:	Yb3+–Er3+ codoped amorphous Zn0.3Al0.25Pb0.3Li0.09Yb0.1Er0.01F2.37 film has been prepared by pulsed-laser deposition. Violet, green, red, and ultraviolet upconversion emissions were observed under infrared excitation at 988 nm. In comparison with the upconversion of the target, the violet and ultraviolet emissions are enhanced greatly. The enhancement is attributed to the diminishing of the cross relaxation: 4G11/2→4F9/2 (Er3+): 2F7/2→2F5/2 (Yb3+) induced by the decrement of the structure parameter Ω2.
Databáze:	OpenAIRE
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