首页|Tunable luminescence of Bi3+/Eu3+-doped SiO2-Al2O3-MCO3(M=Ca,Sr,Ba)glasses for WLED

Tunable luminescence of Bi3+/Eu3+-doped SiO2-Al2O3-MCO3(M=Ca,Sr,Ba)glasses for WLED

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In this work,a group of Bi3+/Eu3+-doped SiO2-Al2O3-MCO3(M=Ca,Sr,Ba)glasses were fabricated through melt-quenching method.Their structure and photoluminescence characters were studied via X-ray diffraction(XRD),UV-Vis transmission spectra(TRS),excitation spectra,emission spectra and decay lifetimes.The XRD results show that no nano-crystal phase forms in glass matrix with different doping concentrations of Bi3+and Eu3+ions.Through regulating optical alkalinity value,the intensity of Bi3+ions increases and the peak position shifts to red wavelength.The Bi3+/Eu3+co-doped glasses show a blue-white-yellow-red luminescence by changing concentration of Eu3+ions.Energy transfer efficiency from Bi3+to Eu3+can reach as high as 10.54％.At 423 K,the emission intensity of 55SiO2-10Al2O3-35BaO-0.25Bi2O3(GBE0.5)is 31.1％of that at 308 K.Meanwhile,the activation energy of the glass matrix is 0.251 eV.All results suggest that these Bi3+/Eu3+co-doped glass samples possess potential application in LED field.

Bi3+Eu3+GlassWhite light-emitting diodeEnergy transferRare earths

Falin Zhang、Xiaoying Liang、Rongfei Wei、Hai Guo、Fangfang Hu

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Department of Physics,Zhejiang Normal University,Jinhua,321004,China

Natural Science Foundation of Zhejiang ProvinceNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

LY21A040005118043031197431551802285

2024

10.1016/j.jre.2023.09.012

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(9)
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