CHANG CHEN, QI ZHANG, DA-XIAO WANG, et al. Preparation and Performance of Continuous Tunable Broadband Fluorescent Glass. [J]. Chinese journal of luminescence, 2021, 42(9): 1412-1418.
DOI:
CHANG CHEN, QI ZHANG, DA-XIAO WANG, et al. Preparation and Performance of Continuous Tunable Broadband Fluorescent Glass. [J]. Chinese journal of luminescence, 2021, 42(9): 1412-1418. DOI: 10.37188/CJL.20210136.
Preparation and Performance of Continuous Tunable Broadband Fluorescent Glass增强出版
The fluorescent glasses for broadband phosphor-converted light-emitting diodes(pc-LED) have good thermal stability and optical properties
which can avoid the poor stability and reabsorption problems of the traditional style of multi-component phosphors dispersed in silicone resin
and improve the service life and luminous efficiency of pc-LED. In this work
a single-component Ce
3+
/Mn
2+
co-doped fluorosilicate glass with continuous tunable broadband emission was prepared by melt-quenching method
and luminescence properties were studied. In order to explore the energy transfer from Ce
3+
to Mn
2+
Ce
3+
doped and Mn
2+
doped fluorosilicate glass were prepared. The experimental results show that Ce
3+
can strongly sensitize the luminescence of Mn
2+
under the excitation of UV light. The blue emission of Ce
3+
doped glass and the yellow emission of Mn
2+
doped glass were extended to broadband emission(380-780 nm) of white light with Ce
3+
/Mn
2+
co-doped glass. Compared with Mn
2+
doped glass
the luminescence intensity of Mn
2+
in Ce
3+
/Mn
2+
co-doped glass was increased by 3 times. With the concentration of Mn
2+
increasing from 0.8% to 2.0%
the energy transfer efficiency from Ce
3+
to Mn
2+
increases from 12.5% to 24.2%. Continuous tunable broadband emission from blue to red can be obtained by controlling the excitation wavelength. This new type of single-component Ce
3+
/Mn
2+
co-doped glass is expected to replace the current conventional multi-component phosphor for pc-LED in optical spectroscopy including spectrophotometer
fluorescence spectrometer.
关键词
荧光玻璃Ce3+/Mn2+共掺宽光谱能量传递
Keywords
fluorescent glassesCe3+/Mn2+ co-dopedbroad spectrumenergy transfer
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