New aluminate-germanate hosts with garnet structure for solid state lighting applications
In this paper, two newly developed garnet phosphors, BaY2Al4GeO12:Ce3+ and SrY2Al4GeO12:Ce3+ are reported. The materials were prepared by simple, facile combustion synthesis. The emission for these phosphors is in yellow region when excited by blue light. Decay for BaY2Al4GeO12:Ce3+ is nearly expone...
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Published in | Optical materials Vol. 129; p. 112469 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.07.2022
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Subjects | |
Online Access | Get full text |
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Summary: | In this paper, two newly developed garnet phosphors, BaY2Al4GeO12:Ce3+ and SrY2Al4GeO12:Ce3+ are reported. The materials were prepared by simple, facile combustion synthesis. The emission for these phosphors is in yellow region when excited by blue light. Decay for BaY2Al4GeO12:Ce3+ is nearly exponential with average lifetime of 70 ns. In case of SrY2Al4GeO12:Ce3+, decay curve could be fitted to second order exponential with fast component τ1 = 24.5 ns and slow component τ2 = 57 ns. Capability of excitation by blue LED, yellow emission, simple preparation make these phosphors suitable for white LED lamp fabrication. These could be suitable replacements for YAG:Ce.
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•Combustion synthesis of newly developed MY2Al4GeO12:Ce3+ (M = Sr, Ba) reported.•Phosphor prepared in single step at 500 °C.•PL, PLE, lifetime and colour coordinates measurements done.•Blue excitation, yellow emission, useful for LED lamp. |
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ISSN: | 0925-3467 1873-1252 |
DOI: | 10.1016/j.optmat.2022.112469 |