Structure and optical properties of Er3+doped ZnSe nanoparticles

被引：0
作者：
Miya, L. A. [1 ]
Koao, L. F. [1 ]
Motloung, S. V. [2 ]
Hile, D. D. [3 ,4 ]
Swart, H. C. [5 ]
Motaung, T. E. [6 ]
机构：
[1] Univ Free State, Dept Phys, ZA-9866 Phuthaditjhaba, South Africa
[2] Cent Univ Technol, Private Bag 1020539, ZA-9300 Bloemfontein, South Africa
[3] Joseph Sarwuan Tarka Univ, Dept Phys, Makurdi, Benue State, Nigeria
[4] Univ Zululand, Dept Phys, ZA-3886 Kwa Dlangezwa, South Africa
[5] Univ Free State, Dept Phys, POB 339, ZA-9300 Bloemfontein, South Africa
[6] Sefako Makgatho Hlth Sci Univ, Dept Chem, POB 94, ZA-0204 Medunsa, South Africa
来源：
OPTICAL MATERIALS | 2024年 / 157卷
基金：
新加坡国家研究基金会;
关键词：
ZnSe; Luminescence; Photo-assisted chemical bath deposition; Thin films; Doping; Erbium (Er3+); ER-DOPED ZNSE; THIN-FILMS; LUMINESCENT PROPERTIES; ELECTRICAL-PROPERTIES; MORPHOLOGY;
D O I：
10.1016/j.optmat.2024.116339
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZnSe:x%Er3+ (0 <= x <= 1.8) thin films were deposited on the glass substrates using a photo-assisted chemical bath deposition method. The X-ray diffraction investigation revealed that the samples exhibited a hexagonal crystalline structure. The undoped ZnSe had a crystallite size of 21 nm, which decreased to 4 nm as the concentration of Er3+ increased. The Scanning electron microscopy images showed that the shape of the particles changed from nanoflakes to glass-like particles after the introduction of Er3+. The expected elemental composition was determined using energy-dispersive spectroscopy. The ultraviolet-visible spectroscopy analysis revealed that increasing the concentration of Er3+ modified the band gap energy within the range of 2.75-4.09 eV. The photoluminescence investigation revealed two distinguishable emission peaks at the energy of 1.79 and 2.34 eV when stimulated with an energy of 5.68 eV. These emission peaks were attributed to the presence of impurities in the host material. The Commission Internationale de l'Eclairage revealed that increasing Er3+ concentration shift the yellow emission from the host towards the light blue region. Incorporating Er3+ dopant into the ZnSe lattice significantly alters the structure and optical properties.
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页数：9
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