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Efficient White Light-Emitting Ag-doped CeO2 Nanoparticles Exhibiting Color Temperature Tunability and High Color Rendering.

Authors :
Kiran, M.
Leel, N. S.
Dalela, B.
Khan, Mohd. A.
Bhargava, A.
Lovevanshi, D.
Alvi, P. A.
Kumar, Shalendra
Dalela, S.
Source :
Journal of Electronic Materials; Sep2024, Vol. 53 Issue 9, p4969-4981, 13p
Publication Year :
2024

Abstract

The present manuscript reports the synthesis of undoped CeO<subscript>2</subscript> and Ce<subscript>1−x</subscript>Ag<subscript>x</subscript>O<subscript>2</subscript> (x = 0.03, 0.05, and 0.07) nanoparticles using a microwave-assisted co-precipitation route to understand the Ag doping effect in CeO<subscript>2</subscript> nanoparticles. The structural and optical properties of these nanoparticles were investigated using x-ray diffraction, UV–Vis–NIR, and PL spectroscopy. The XRD result confirmed the formation of cubic fluorite structures with undoped and Ag-doped CeO<subscript>2</subscript> nanoparticles. The crystallite size of Ag-doped CeO<subscript>2</subscript> nanoparticles was observed within the range of 26–47 nm. The absorption peak was observed using UV–Vis–NIR spectroscopy and obtained at below 400 nm, indicating a blue shift with the incorporation of Ag<superscript>+</superscript> ions in the CeO<subscript>2</subscript> nanolattice, and the causes are explained in terms of the BM effect and electronic transitions. The PL measurements were taken to determine the defects and excitation wavelength. The prepared samples depicted good luminescence properties with a high value color rendering index (CRI). The results demonstrated that Ag-doped CeO<subscript>2</subscript> nanoparticles can be used for white light emission, since the structural and optical properties of semiconductors were enhanced upon doping with elements such as Ag. Therefore, these nanoparticles may act as promising candidates for various applications such as UV-absorption, photocatalysis, light-emitting diodes, luminescence, and optoelectronics. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03615235
Volume :
53
Issue :
9
Database :
Complementary Index
Journal :
Journal of Electronic Materials
Publication Type :
Academic Journal
Accession number :
178774737
Full Text :
https://doi.org/10.1007/s11664-024-11057-1