Abstract
Monodispersed spheres (1–4 μm in diameter) of BaWO4:Eu3+ (hereafter BWO:Eu) red-phosphor exhibiting intense emission at 615 nm were synthesized via a mild hydrothermal method. X-ray
diffraction, scanning electron microscope, photoluminescence excitation and emission spectra, and decay curve were used to
characterize the properties of BWO:Eu phosphors. An intense red emission was obtained by exciting either into the 5L6 state with 394 nm or the 5D2 state with 465 nm, that correspond to two popular emission lines from near-UV and blue LED chips, respectively. The values
of Ω
2,4 experimental intensity parameters (13.8 × 10−20 and 8.2 × 10−20 cm2) are determined. The high-emission quantum efficiency of the BWO:Eu phosphor suggests this material could be promising red
phosphors for generating white light in phosphor-converted white light-emitting diodes.
diffraction, scanning electron microscope, photoluminescence excitation and emission spectra, and decay curve were used to
characterize the properties of BWO:Eu phosphors. An intense red emission was obtained by exciting either into the 5L6 state with 394 nm or the 5D2 state with 465 nm, that correspond to two popular emission lines from near-UV and blue LED chips, respectively. The values
of Ω
2,4 experimental intensity parameters (13.8 × 10−20 and 8.2 × 10−20 cm2) are determined. The high-emission quantum efficiency of the BWO:Eu phosphor suggests this material could be promising red
phosphors for generating white light in phosphor-converted white light-emitting diodes.
- Content Type Journal Article
- DOI 10.1007/s10853-010-4891-8
- Authors
- Jinsheng Liao, School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000 China
- Bao Qiu, School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000 China
- He-Rui Wen, School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000 China
- Yong Li, School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000 China
- Ruijin Hong, School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000 China
- Hangying You, School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, 341000 China
- Journal Journal of Materials Science
- Online ISSN 1573-4803
- Print ISSN 0022-2461
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