Co-precipitation synthesis and luminescent properties of indium-substituted YAG: Ce3+

Cerium-doped yttrium aluminum indium garnet (YAG: Ce3+) yellow phosphor was prepared by using the co-precipitation method. The impacts of In3+ concentration onto the properties were investigated and analyzed by X-ray diffraction, infrared spectra, scanning electron microscopy, and X-ray photoelectron spectroscopy. The results indicated that the co-precipitation method adopted favored the ultrafine powders and achieved In3+ substitution for part of Al3+, leading to the large crystal plane spacing, and a blue shift occurred in the indium-substituted YAG: Ce3+ emission.

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► Indium-substituted YAG: Ce3+ nanoparticles yellow phosphors can be synthesized successfully by co-precipitation method.
► Blue shift of the emission wavelength occurs when part of Al3+ can be substituted by In3+.
► The substitution of indium for aluminum in YAG has not been reported.