White Light Emission from Dy3+-Activated CaY2O4 Phosphor
- Title
- White Light Emission from Dy3+-Activated CaY2O4 Phosphor
- Creator
- Talukdar P.R.; Dubey V.; Saji J.; Rao M.C.
- Description
- Synthesis and characterization of a Dy3+-activated calcium yttrium oxide (CaY2O4) phosphor are reported. The CaY2O4:Dy3+ (1.5 mol%) phosphor is synthesized using a modified solid-state reaction technique for calcination and sintering. The cubic structure is revealed by the X-ray diffraction technique. The morphology and particle size distribution of the prepared phosphor are investigated by the FEGSEM technique. The chemical bonds and functional group analysis are confirmed by the FTIR. A photoluminescence analysis of the CaY2O4:Dy3+ phosphor shows dual excitation wavelengths at 285 and 348 nm, especially in the ultraviolet region. At 383 nm, three distinct emission peaks are found at the wavelengths 238, 485, and 571 nm. The spectroscopic parameters are calculated using the CIE chromaticity coordinates. The CIE coordinates of the Dysprosium ion-activated CaY2O4 phosphor (1.5 mol%) show an emission near the white light region of the chromaticity diagram, suggesting that it is suitable for W-LED applications. The Author(s), under exclusive licence to Springer Nature Switzlerland AG 2024.
- Source
- Russian Physics Journal, Vol-67, No. 7, pp. 1000-1005.
- Date
- 2024-01-01
- Publisher
- Springer
- Subject
- CaY2O4:Dy3+ phosphor; CIE; FEGSEM; solid-state reaction; XRD
- Coverage
- Talukdar P.R., Department of Physics, North-Eastern Hill University, Meghalaya, Shillong, 793022, India; Dubey V., Department of Physics, North-Eastern Hill University, Meghalaya, Shillong, 793022, India; Saji J., Department of Science and Humanities, School of Engineering and Technology, CHRIST, (Deemed to be University), Bangalore, India; Rao M.C., Department of Physics, Andhra Loyola College, Vijayawada, India
- Rights
- Restricted Access
- Relation
- ISSN: 10648887
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Talukdar P.R.; Dubey V.; Saji J.; Rao M.C., “White Light Emission from Dy3+-Activated CaY2O4 Phosphor,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 23, 2025, https://archives.christuniversity.in/items/show/12965.