Novel strategies for the enhancement of the NIR emission in the Ca doped ZnO system: Doping with Cr or adding Sb2S3

We report two novel strategies to enhance the NIR emission in the ZnO:Ca system. In the first strategy, we synthesized ZnO:Ca nanoparticles using a wet chemical method and doped them with various concentration of Cr. SEM images showed that the ZnO:Ca,Cr nanoparticles had a grain-like morphology and...

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Bibliographic Details
Published in:Optical materials 2023-09, Vol.143, p.114302, Article 114302
Main Authors: Garcés, L., Garcia, C.R., Oliva, J., Medina-Velazquez, D.Y.
Format: Article
Language:English
Subjects:
Blue emission
Chromium
CIE coordinates
NIR emission
Sb2S3
ZnO:Ca
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Summary:We report two novel strategies to enhance the NIR emission in the ZnO:Ca system. In the first strategy, we synthesized ZnO:Ca nanoparticles using a wet chemical method and doped them with various concentration of Cr. SEM images showed that the ZnO:Ca,Cr nanoparticles had a grain-like morphology and their sizes increased from 33 to 110 nm after incrementing the Cr concentration from 4 to 17 mol%. The analysis by X-ray diffraction (XRD) revealed that he ZnO:Ca,Cr sample made with 4 mol% of Cr had a pure hexagonal phase but the other samples synthesized with Cr concentration above 11 mol% presented the hexagonal phase and a small content of Cr2O3 (
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2023.114302