Spray pyrolysis deposited Cr and In doped CdS films for laser application

Гаврищук, Е. М.; Савин, Д. В.; Tomilova, T. S.; Иконников, В. Б.; Kurashkin, S. V.; Машин, А. И.; Nezhdanov, Aleksey V.; Усанов, Д. А.

doi:10.1016/j.optmat.2021.111153

Cited by 10 publications

(6 citation statements)

References 31 publications

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“…The pure CdS sample exhibited a band gap value of E g = 2.45 eV. This value coincides with that reported in the scientific literature. − …”

Section: Resultssupporting

confidence: 88%

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Optical, Electrical, and Morphologic Characterization of Chromium-Impurified CdS Thin Films Elaborated by the Chemical Bath Deposition

Contreras-Rodriguez,

Mendivil-Reynoso,

Landin

et al. 2023

ACS Omega

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In this research work, a material system formed of cadmium sulfide combined with chromium atoms was developed to evaluate the influence of chromium concentration on the optical, electrical, structural, and morphological properties of a precursor layer of CdS. It is possible to observe that the transmission spectra increased for all chromium concentrations analyzed. From X-ray diffractograms, we conclude more accurately that CdS presents a mixture of phases, including orthorhombic, hexagonal, and cubic. Furthermore, the impact of adding chromium results in variations in the intensity of two major peaks in the diffractograms and an anomalous shift in the CdS pattern. The calculated resistivities show an invariable behavior of 4.5 × 10 6 Ω cm. In addition, the bandgap values remain practically constant, with values of approximately 2.43−2.44 eV. The addition of chromium at different concentrations leads to surface morphology changes, as observed in SEM images.

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“…The pure CdS sample exhibited a band gap value of E g = 2.45 eV. This value coincides with that reported in the scientific literature. − …”

Section: Resultssupporting

confidence: 88%

“…Holes in the valence band due to doping and specific treatments affect the conductivity of semiconductors. The presence of chromium as a doping agent in CdS thin films is expected to have positive effects on their properties. − Investigations into CdS films doped with chromium (Cr) have been relatively scarce, as indicated in refs –.…”

Section: Introductionmentioning

confidence: 99%

Optical, Electrical, and Morphologic Characterization of Chromium-Impurified CdS Thin Films Elaborated by the Chemical Bath Deposition

Contreras-Rodriguez,

Mendivil-Reynoso,

Landin

et al. 2023

ACS Omega

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“…Precipitation was carried out in an excess of thiourea relative to the total content of metal cations of 1.8-1. Earlier, in [23], a correlation was found between the precursor solution and deposited film compositions. Accordingly, to obtain doped CdS films with different ligature contents, we changed the concentration of precursors in the initial solution.…”

Section: Producing Samples Techniquementioning

confidence: 84%

“…Samples of zinc selenide doped simultaneously with ions of optically (Cr) and electrically (Al, Na) active impurities were produced as a result of single doping act, and the effect of electrically active impurities on the luminescent and laser characteristics of the obtained structures was also studied. In [23], a correlation was established between the composition of Cr:CdS films and the concentration of optically active Cr 2+ ions in bulk ZnSe samples, that indicates the possibility of using SP technique for producing of laser media with the controlled impurity content and required doping profile.…”

Section: Introductionmentioning

confidence: 92%

Laser properties of active media based on ZnSe doped with Fe and In from spray pyrolysis deposited films

Gavrishchuk¹,

Савин²,

Tomilova³

et al. 2022

Laser Phys. Lett.

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A technique was presented for obtaining laser media based on polycrystalline zinc selenide doped with iron from spray pyrolysis deposited films in the solid-phase diffusion process. The effect of the ligature film composition and the high-temperature treatment conditions on the lasing characteristics of Fe:(In):ZnSe active elements was investigated. Lasing with an energy of 100 mJ at a differential absorbed energy efficiency of 42% was obtained on 20 mm disk Fe:ZnSe element pumped by a pulsed electric-discharge HF laser.

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“…Such laser sources are in demand in various fields of medicine, highly sensitive spectrum analyzers, remote sensing and atmospheric monitoring, ranging, optical communication systems, and military applications [9,[13][14][15][16][17][18][19]. The traditional methods of dopant (Cr 2+ or Fe 2+ ) introduction into the chalcogenide host matrix are doping during crystal growth (melt growth method [6][7][8][20][21][22], physical or chemical vapor transport technique [23][24][25]) and post-growth high-temperature diffusion doping of single or polycrystals from thin-film metal sources deposited on the sample surface [10,12,[26][27][28][29][30][31][32][33][34]. The latter approach is most commonly used; the matrix is usually a polycrystalline ZnS or ZnSe material synthesized by chemical vapor deposition (CVD).…”

Section: State Of the Art In Zinc Chalcogenide Active Mediamentioning

confidence: 99%

A Review of Cr2+ or Fe2+ Ion-Doped Zinc Sulfide and Zinc Selenide Ceramics as IR Laser Active Media

Тимофеева

Балабанов

2023

Ceramics

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Zinc chalcogenides doped with Cr2+ or Fe2+ ions are of considerable interest as active media for IR lasers operating in the 2–5 µm wavelength range. Such lasers are in demand in various fields of medicine, remote sensing and atmospheric monitoring, ranging, optical communication systems, and military applications. In recent years, however, the rate of improvement in the characteristics of zinc chalcogenide laser sources has slowed considerably. Unwanted thermally induced effects, parasitic oscillations, and laser-induced damage of the active element have hindered the scaling of output power and efficiency. However, the physical and chemical properties of the materials leave ample room for further improvements. In particular, the control of the dopant concentration profile in the active element is of great importance. Zero concentration of Cr2+ or Fe2+ ions on the radiation input/output surfaces can significantly increase the laser-induced damage threshold; the designed concentration distribution in the element volume allows regulation of heat dissipation and reduction of parasitic oscillations. The zinc chalcogenide ceramic technology seems to be the most suitable to solve this challenge. This review presents and discusses the state of the art in ZnS and ZnSe optical and laser ceramics and the directions for further development of their technology.

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Spray pyrolysis deposited Cr and In doped CdS films for laser application

Cited by 10 publications

References 31 publications

Optical, Electrical, and Morphologic Characterization of Chromium-Impurified CdS Thin Films Elaborated by the Chemical Bath Deposition

Optical, Electrical, and Morphologic Characterization of Chromium-Impurified CdS Thin Films Elaborated by the Chemical Bath Deposition

Laser properties of active media based on ZnSe doped with Fe and In from spray pyrolysis deposited films

A Review of Cr2+ or Fe2+ Ion-Doped Zinc Sulfide and Zinc Selenide Ceramics as IR Laser Active Media

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