Abstract
Novel yttrium oxide-based orange-red emanative BaSrY4(1−x)Sm4xO8 (x = 1.0–6.0 mol%) nanopowder were manufactured by ecologically benign and less energy consuming urea combustion methodology. Crystal structure investigations reported the orthorhombic symmetry type with Pnma (62) phase group. Nano-range of 25–40 nm and agglomerated morphology of the developed crystal were known by performing transmission and scanning electron microscopy. EDAX (energy dispersive X-ray analysis) results traced the uniform elemental composition of the nanomaterials. The manufactured materials depicted the fine orange-red band at 607 nm via 4G5/2 → 6H7/2 typical transition. Optical investigations revealed the wide Egap (band gap) values of BaSrY3.88Sm0.12O8 (5.25 eV) and BaSrY4O8 (5.79 eV). Reliance of the glowing intensity of the manufactured nanocrystals on activator (Sm3+) amount proclaimed the BaSrY3.88Sm0.12O8 as most alluring one, reporting CIE coordinates (0.580, 0.418), 96.31% color purity, 1667 K CCT (correlated color temperature), and 54.8% quantum efficiency. These magnificent results certified the relevancy of the targeted nanocrystals as a novel auspicious agent in the manufacturing of solid-state downconverted WLEDs.
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Monika Sheoran heartily thanks to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for its financial support to complete this research work via JRF (Award No. 09/382/(0216)/2019-EMR-I).
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Sheoran, M., Sehrawat, P., Dalal, H. et al. Realization of orange-red emanation from novel oxide-based BaSrY4O8:Sm3+ nanocrystals for optoelectronic applications. J Mater Sci: Mater Electron 32, 23601–23613 (2021). https://doi.org/10.1007/s10854-021-06848-9
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DOI: https://doi.org/10.1007/s10854-021-06848-9