Co-precipitation synthesis and optical properties of green-emitting Ba2MgSi2O7:Eu2+ phosphor

Autor:	C. X. Thang, T. T. H. Tam, N.D. Cuong, Dai Hai Nguyen, Pham Thanh Huy, Nguyen Duc Chien, Nguyen Trung Kien, Nguyen Van Du
Rok vydání:	2014
Předmět:	Materials science Photoluminescence Dopant Coprecipitation Biophysics Analytical chemistry Phosphor General Chemistry Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Wavelength Phase (matter) Emission spectrum Excitation
Zdroj:	Journal of Luminescence. 147:358-362
ISSN:	0022-2313
Popis:	Green-emitting Ba2−xMgSi2O7:xEu2+ phosphor was prepared by co-precipitation. The dependence of the phase and emission spectra of the phosphor on sintered temperature was investigated. The photoluminescence (PL) intensities of the phosphors with various Eu2+ contents from 0.04 to 0.07 showed concentration quenching at 0.05. The substitution of Ba2+ by dopant Eu2+ at 0.05 in the Ba2MgSi2O7 host matrix did not change the unit cell volume and of the SiOSi angle. The PL decay times at the peak and cross band of the spectrum present carrier lifetimes with similar values at 550 ns for Ba1.95MgSi2O7:0.05Eu2+ phosphor. The carrier lifetimes at different excitation wavelengths indicated that the phosphor prepared by co-precipitation is a superior candidate for fabricating white light.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::37ab0deb56a0d8e9e02b792631df9d68 https://doi.org/10.1016/j.jlumin.2013.11.066 Zobrazit plný text záznamu Full Text from ScienceDirect