Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor
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2019
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© 2018 Elsevier B.V.
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Judd-Ofelt analysis of HfO2:Eu3+ with various europium doping concentrations, formed by plasma electrolytic oxidation, had been investigated. Ω2 parameter is increasing, while Ω4 parameter shows no concentration dependence. For the highest europium doping concentration of 0.62 at% Ω2 = 4.03·10−20 cm2 and Ω4 = 2.26·10−20 cm2. Radiative transition probabilities of each allowed emitting level were calculated. The radiative lifetime of 5D0 emitting level and a relatively high cross section of emission 5D0→7F2 were estimated: 1.58 ms and 13.49·10−22 cm2, respectively. CIELUV coordinates of photoluminescence of HfO2 doped with various europium concentrations and by excitation with UV 270 nm and 395 nm beam had been calculated and plotted to the CIE 1976 diagram. For low concentrations HfO2:Eu3+ and UV excitation the material gives almost pure white luminescence, which is an indication for its potential use as a white LED phosphor. © 2018 Elsevier B.V.
Ključne reči:
Judd-Ofelt / Europium / HfO2:Eu3+ / CIE / LED / PhosphorIzvor:
Optical Materials, 2019, 88, 392-395Finansiranje / projekti:
- Materijali redukovane dimenzionalnosti za efikasnu apsorpciju svetlosti i konverziju energije (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Grafitne i neorganske nanostrukture niske dimenzionalnosti (RS-MESTD-Basic Research (BR or ON)-171035)
DOI: 10.1016/j.optmat.2018.11.056
ISSN: 0925-3467
WoS: 000461001600056
Scopus: 2-s2.0-85058522058
URI
https://linkinghub.elsevier.com/retrieve/pii/S0925346718308073https://vinar.vin.bg.ac.rs/handle/123456789/8008
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Institucija/grupa
VinčaTY - JOUR AU - Ćirić, Aleksandar AU - Stojadinović, Stevan AU - Dramićanin, Miroslav PY - 2019 UR - https://linkinghub.elsevier.com/retrieve/pii/S0925346718308073 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8008 AB - Judd-Ofelt analysis of HfO2:Eu3+ with various europium doping concentrations, formed by plasma electrolytic oxidation, had been investigated. Ω2 parameter is increasing, while Ω4 parameter shows no concentration dependence. For the highest europium doping concentration of 0.62 at% Ω2 = 4.03·10−20 cm2 and Ω4 = 2.26·10−20 cm2. Radiative transition probabilities of each allowed emitting level were calculated. The radiative lifetime of 5D0 emitting level and a relatively high cross section of emission 5D0→7F2 were estimated: 1.58 ms and 13.49·10−22 cm2, respectively. CIELUV coordinates of photoluminescence of HfO2 doped with various europium concentrations and by excitation with UV 270 nm and 395 nm beam had been calculated and plotted to the CIE 1976 diagram. For low concentrations HfO2:Eu3+ and UV excitation the material gives almost pure white luminescence, which is an indication for its potential use as a white LED phosphor. © 2018 Elsevier B.V. T2 - Optical Materials T1 - Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor VL - 88 SP - 392 EP - 395 DO - 10.1016/j.optmat.2018.11.056 ER -
@article{ author = "Ćirić, Aleksandar and Stojadinović, Stevan and Dramićanin, Miroslav", year = "2019", abstract = "Judd-Ofelt analysis of HfO2:Eu3+ with various europium doping concentrations, formed by plasma electrolytic oxidation, had been investigated. Ω2 parameter is increasing, while Ω4 parameter shows no concentration dependence. For the highest europium doping concentration of 0.62 at% Ω2 = 4.03·10−20 cm2 and Ω4 = 2.26·10−20 cm2. Radiative transition probabilities of each allowed emitting level were calculated. The radiative lifetime of 5D0 emitting level and a relatively high cross section of emission 5D0→7F2 were estimated: 1.58 ms and 13.49·10−22 cm2, respectively. CIELUV coordinates of photoluminescence of HfO2 doped with various europium concentrations and by excitation with UV 270 nm and 395 nm beam had been calculated and plotted to the CIE 1976 diagram. For low concentrations HfO2:Eu3+ and UV excitation the material gives almost pure white luminescence, which is an indication for its potential use as a white LED phosphor. © 2018 Elsevier B.V.", journal = "Optical Materials", title = "Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor", volume = "88", pages = "392-395", doi = "10.1016/j.optmat.2018.11.056" }
Ćirić, A., Stojadinović, S.,& Dramićanin, M.. (2019). Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor. in Optical Materials, 88, 392-395. https://doi.org/10.1016/j.optmat.2018.11.056
Ćirić A, Stojadinović S, Dramićanin M. Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor. in Optical Materials. 2019;88:392-395. doi:10.1016/j.optmat.2018.11.056 .
Ćirić, Aleksandar, Stojadinović, Stevan, Dramićanin, Miroslav, "Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor" in Optical Materials, 88 (2019):392-395, https://doi.org/10.1016/j.optmat.2018.11.056 . .