Spectroscopic investigation of rare earth activated potassium calcium pyrophosphate K2Ca1-xRExP2O7 (RE = Tb3+, Dy3+, Sm3+ and Eu3+) phosphors

Wani, JA and Kore, BP and Dabre, KV and Dhoble, SJ and Chopra, V (2021) Spectroscopic investigation of rare earth activated potassium calcium pyrophosphate K2Ca1-xRExP2O7 (RE = Tb3+, Dy3+, Sm3+ and Eu3+) phosphors. In: Optik, 228 .

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Abstract

This study investigates the spectroscopic properties of rare earth activated potassium calcium pyrophosphate K2Ca1-xRExP2O7 (RE = Tb3+, Dy3+, Sm3+ and Eu3+) phosphors synthesized by a solid-state reaction method. The synthesized phosphor samples were characterized by powder X-ray diffraction, Scanning electron microscope, Fourier transform infrared, and Photoluminescence spectroscopy. The phosphors exhibit a strong excitation band in near UV to blue region in the range 350�400 nm showing spectral overlap with the emission band of a UV light emitting diode (LED) chip. Spectroscopic analysis has also been carried out using the Judd-Ofelt theory. The obtained luminescence properties and calculated spectroscopic parameters indicate usefulness of these phosphors in solid-state lighting, white light emitting phosphor for near UV excited LEDs and other displays applications. © 2020 Elsevier GmbH

Item Type:	Journal Article
Publication:	Optik
Publisher:	Elsevier GmbH
Additional Information:	The copyright of this article belongs to Elsevier GmbH
Keywords:	Calcium compounds; Excited states; Judd-Ofelt theory; Light; Light emitting diodes; Luminescence; Phosphors; Photoluminescence spectroscopy; Potassium compounds; Rare earths; Scanning electron microscopy; Solid state reactions; Spectroscopic analysis; Vanadium metallography, Calcium pyrophosphate; Fourier transform infra reds; Luminescence properties; Powder X ray diffraction; Solid state reaction method; Spectroscopic investigations; Spectroscopic parameters; Spectroscopic property, Uranium metallography
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	22 Jan 2021 06:47
Last Modified:	22 Jan 2021 06:47
URI:	http://eprints.iisc.ac.in/id/eprint/67678

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