Structural, optical and electrical properties of Bi2−xMnxTe3 thin films

Hadia, N. M. A.; Mohamed, S. H.; Mohamed, W. S.; Alzaid, Meshal; Khan, Mohd Taukeer; Awad, M. A.

doi:10.1007/s10854-021-07281-8

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…While these models often assume standard reference wavelengths, it is crucial to recognize that the refractive index will vary with the different wavelengths. Their typical reference wavelength in the visible spectrum is around 589 nm (corresponds to the sodium D-line). , The refractive index of the samples was also evaluated by using different models. The formula to calculate the refractive index, as given by Dimitrov and Sakka, is given by n 2 − 1 n 2 + 2 = 1 − true( E normalg 20 true) …”

Section: Resultsmentioning

confidence: 99%

Hydrothermally Synthesized Bi-Doped CdTe Nanoparticles with Tunable Optical and Photoresponse Properties for Visible Photodetectors

Supriya,

Kumar,

Pradhan

et al. 2024

ACS Appl. Mater. Interfaces

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The remarkable applicability and unique properties of CdTe nanoparticles make them vital in various applications such as optoelectronics and photovoltaics. It has been demonstrated that adding a metal dopant to a nanomaterial matrix significantly improves its characteristics, increasing its potential for a variety of applications. In this work, a simple hydrothermal synthesis process for bidoped CdTe nanoparticles is reported, wherein four distinct samples are generated by adjusting the concentration of Bi doping. Structural analysis using X-ray diffraction (XRD) confirmed the presence of the CdTe cubic phase in the material with observable phase shifts due to Bi incorporation. Rietveld refinement of the XRD results further enabled a detailed structural analysis. Raman spectroscopy provided insights into the different vibrational modes of CdTe, while transmission electron microscopy analysis further elucidated the CdTe phase and determined interplanar spacing values. Morphological examination via field emission scanning electron microscopy revealed a consistent nanoparticle-like morphology, unaffected even by increased Bi concentration. Elemental analysis conducted through inductively coupled plasma mass spectrometry offered valuable insights into the composition of the material. Furthermore, UV−vis analysis revealed a decrease in the bandgap, indicating potential shifts in the material's optical properties. Notably, the photoresponse study demonstrated an increase in current value, as well as alterations in the rise and decay times of the material. These properties highlight its potential for various optical and electrical applications. Overall, these findings underscore the promising prospects of bidoped CdTe nanoparticles in various advancements.

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Section: Resultsmentioning

confidence: 99%

Hydrothermally Synthesized Bi-Doped CdTe Nanoparticles with Tunable Optical and Photoresponse Properties for Visible Photodetectors

Supriya,

Kumar,

Pradhan

et al. 2024

ACS Appl. Mater. Interfaces

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“…Latent applications are automobiles for cooling car seats and powering thermal sensors, Peltier coolers and generation of small-scale electricity [4][5][6]. Transparent conductive oxide (TCO) materials have excellent photo-electric aspects due to their low specific resistance and high transmittance [7][8][9][10]. As a result, they find extensive use in solar cells, liquid crystal displays, gas sensors, electrochromic devices, and ultraviolet semiconductor lasers [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical, optoelectronic and thermoelectric properties of binary CdO by under pressure: An ab initio study

Erum,

Sharma,

Anwar

et al. 2024

Int J of Quantum Chemistry

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This manuscript presents, under the effect of different pressures (0–60 GPa), the structural, mechanical, electronic, optical, and thermoelectric properties of CdO with NaCl type structure by using the FP‐LAPW (Full Potential Linearized Augmented Plane Wave method) with Generalized Gradient Approximation (GGA) whose basis is the Density Functional Theory (DFT). PBE‐GGA was used to compute the structural, elastic, optical, electronic, and thermoelectric properties using Tran‐Blaha modified Becke‐Johnson (TB‐mBJ) potential. Different terms like formation energy, cohesive energy, and phonon were used for the computation of thermal stability and that is further confirmed by elastic properties. Bulk moduli and pressure‐dependent lattice constants were achieved by using the optimization method. From the results, we can say that the increase in pressure is directly related to the band gap and inversely related to the lattice constant. The mechanical properties show that CdO is highly ductile and mechanically stable and ductility is directly related to pressure. The minimum conduction band goes to a higher energy level when the pressure increases while the maximum valance band goes to a lower energy level ultimately the energy band gap increases. The optical parameter curve does not change by increasing pressure but the peaks start moving towards the higher energies slightly. Calculations reveals that band gap increases by increasing pressure which shows the blue shift in optical properties. The optical properties spectrum was studied, including reflectance, dielectric coefficient, and absorption coefficient. The optical constants show that the phase of CdO with NaCl structure was translucent. In the end, the thermoelectric feature in terms of thermal conductivity (K), power factor (PF), Seebeck coefficient (S), and electrical conductivity (σ) were studied by using the BoltzTrap code as a function of temperature. Thermoelectric and optical aspects revealed that pressure induces the possible use of CdO material for various TE and optical applications.

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Ce3+ doping enhanced electrical and UV photo-sensing properties of NiO nanostructures

Kaarthik,

Vivek,

Balraj

2024

Opt Quant Electron

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Structural, optical and electrical properties of Bi2−xMnxTe3 thin films

Cited by 5 publications

References 43 publications

Hydrothermally Synthesized Bi-Doped CdTe Nanoparticles with Tunable Optical and Photoresponse Properties for Visible Photodetectors

Hydrothermally Synthesized Bi-Doped CdTe Nanoparticles with Tunable Optical and Photoresponse Properties for Visible Photodetectors

Enhanced mechanical, optoelectronic and thermoelectric properties of binary CdO by under pressure: An ab initio study

Ce3+ doping enhanced electrical and UV photo-sensing properties of NiO nanostructures

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