TY - JOUR
T1 - Enhanced luminescence properties of double perovskite (Ba, Sr)LaMgSbO6:Eu3+ phosphors based on composition modulation
AU - Liu, Quan
AU - Wang, Lixi
AU - Huang, Wentao
AU - Zhang, Le
AU - Yu, Mingxun
AU - Zhang, Qitu
N1 - Publisher Copyright:
© 2017
PY - 2017
Y1 - 2017
N2 - Eu3+-doped double perovskite (Ba, Sr)LaMgSbO6 phosphors were synthesized by the traditional solid-state reaction method. Structure evolution was investigated by X-ray diffraction and Rietveld structure refinement. The crystallographic data of powders were given in detail. Also, the photoluminescence properties, including excitation spectra, emission spectra, intensity ratios of I (5D0-7F2)/I (5D0-7F1), Commission International de L'Eclairage (CIE) chromaticity coordinates, UV–vis diffuse reflectance spectra, lifetimes, and the thermal quenching properties were thoroughly discussed. With the increase of Sr2+ concentration, the emission intensities increased and the decay times decreased. Band gap was calculated to explain the phenomenon of the increased emission intensity. The phosphors showed temperature-sensitive luminescent properties based on the thermal quenching performance. The configurational coordinate diagram was used to explain the thermal quenching mechanism.
AB - Eu3+-doped double perovskite (Ba, Sr)LaMgSbO6 phosphors were synthesized by the traditional solid-state reaction method. Structure evolution was investigated by X-ray diffraction and Rietveld structure refinement. The crystallographic data of powders were given in detail. Also, the photoluminescence properties, including excitation spectra, emission spectra, intensity ratios of I (5D0-7F2)/I (5D0-7F1), Commission International de L'Eclairage (CIE) chromaticity coordinates, UV–vis diffuse reflectance spectra, lifetimes, and the thermal quenching properties were thoroughly discussed. With the increase of Sr2+ concentration, the emission intensities increased and the decay times decreased. Band gap was calculated to explain the phenomenon of the increased emission intensity. The phosphors showed temperature-sensitive luminescent properties based on the thermal quenching performance. The configurational coordinate diagram was used to explain the thermal quenching mechanism.
KW - Double perovskite
KW - Red emitting
KW - SbO phosphors
KW - Thermal quenching mechanism
KW - White light emitting diodes
UR - http://www.scopus.com/inward/record.url?scp=85019268264&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2017.05.108
DO - 10.1016/j.jallcom.2017.05.108
M3 - 文章
AN - SCOPUS:85019268264
SN - 0925-8388
VL - 717
SP - 156
EP - 163
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -