학술논문
Experimental optimization design synthesis and up-conversion luminescence properties of YNbO4 :Ho3+ /Yb3+ .
Document Type
Article
Author
Source
Subject
*YTTERBIUM
*LUMINESCENCE
*EXPERIMENTAL design
*POWER spectra
*POWER density
*RARE earth metals
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Language
ISSN
0950-0340
Abstract
In order to obtain the maximum green up-conversion luminescence intensity of Ho3+/Yb3+ co-doped YNbO4, a uniform design and a quadratic general rotation combination design were applied to optimize the doping concentration. The concentration of the rare earth corresponding to the strongest green luminescence intensity was determined to be 10% Ho3+/34.9% Yb3+. Maximum luminous intensity of green light tested under 980 nm excitation was 157373.266, which was close to the theoretical calculated integral intensity value of 157290.825. The variation of the up-conversion luminescence spectra at different power density of the 980 nm laser was characterized. According to the formula fitting, the up-conversion luminescence process is a two-photon process. Meanwhile, the temperature sensing characteristic of the samples has been discussed. Finally, the CIE coordinates were analyzed and calculated to be (0.297, 0.692). [ABSTRACT FROM AUTHOR]