Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 288, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2022.126422
Keywords
Photoluminescence; Energy transfer; Lifetime; Color tunability
Categories
Funding
- National Research Program for Universities (NRPU)
- Higher Education Commission Pakistan [20-8862/NRPU/RD/HEC/2017]
- Researchers Supporting Project, King Saud University, Riyadh, Saudi Arabia [RSP2022R448]
- National Research Council of Thailand (NRCT)
- Thailand Science Research and Innovation (TSRI)
- Chiang Mai University
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This study investigates energy transfer between rare-earth ions in bismuth borate glasses. The results show that co-doped glasses exhibit improved red emission, indicating energy transfer from Dy3+ to Eu3+ ions. The prepared glass can be used as red and orange red light-emitting diodes (LEDs) in lighting applications.
This study concentrates on energy transfer between rare-earth ions in bismuth borate glasses. The LiBBiEu3+, LiBBi:Dy3+, and co-doped LiBBiDy15Eu20 glasses were synthesized by melt-quenching process and carried out their structural, physical, optical, and luminescence investigations. The photoluminescence (PL)-emission spectra of LiBBi:Eu3+ glass show intense red emission while those of LiBBi:Dy3+ exhibit blue (F-4(9/2) -> H-6(15/2)) and yellow (F-4(9/2 )-> H-6(13/2)) emission under different excitation wavelengths. The co-doped LiBBiDy15Eu20 host glass shows improved red emission, indicating transfer of energy from Dy3+ to Eu3+ ions. The efficiency of energy transfer from Dy3+ to Eu3+ in host glass was determined from PL-emission intensities. The lifetime measurement was employed for single and co-doped glasses under different excitation and emission wavelengths. The lifetime of co-doped sample measured under different excitation and emission wavelengths, confirms energy transformation from Dy3+ to Eu3+ ions. The CIE coordinates indicate that the prepared glass can be employed as red and orange red light-emitting diodes (LEDs) in lighting application.
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