Photoluminescence features of trivalent holmium doped Ca2La8(SiO4)6O2 phosphors-Reference-Cited by-同舟云学术

Photoluminescence features of trivalent holmium doped Ca₂La₈(SiO₄)₆O₂ phosphors

Published:2023-08-31 Issue:12 Volume:114 Page:1129-1137
ISSN:1862-5282
Container-title:International Journal of Materials Research
language:en
Short-container-title:

Author:

Singh Vijay¹,Nande Amol²,Dhoble S. J.³

Affiliation:

1. Department of Chemical Engineering , Konkuk University , Seoul , Republic of Korea

2. G. N. College of Science , Ballarpur , India

3. Department of Physics , R.T.M. Nagpur University , Nagpur , India

Abstract

Abstract This study examines the optical properties of Ca2La8−x (SiO4)6O2:xHo3+ phosphors derived using the sol–gel method. X-ray diffraction data and Rietveld analysis confirmed that the phosphors formed in hexagonal phase with an average estimated crystalline size of 27 nm. The prominent excitation peak observed at wavelength 463 nm corresponding to excitation energy 2.68 eV was due to the 5I8 → 5G6 + 5F1 transition. The photoluminescence emission spectra revealed that the synthesized phosphors emitted in the green color region with the 5S2 + 5F4 → 5I8 transition, releasing 2.27 eV energy. The emission and excitation analyses revealed the presence of concentration quenching as the Ho3+ concentration exceeded 0.03 mol in the Ca2La8−x (SiO4)6O2:xHo3+ series. Further, photometry analysis demonstrated a color purity exceeding 94 %, which supports the candidacy of these phosphors for solid-state lighting applications.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

Link

https://www.degruyter.com/document/doi/10.1515/ijmr-2022-0314/pdf

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