Influence of Mg on Structural and Optical Properties of ZnSe Nanocrystals Synthesized by Microwave Assisted Technique

Choubey, Shiv Kumar; Kaushik, Anurag; Tiwary, K. P.

doi:10.1016/j.matpr.2020.01.279

Cited by 11 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CdS thin films exhibit significant attenuation due to their optoelectronic characteristics [2]. A study of the processing of certain III-V and II-VI binary compound semiconductors for technological applications was conducted [3,4,5]. Te optical band-gap of CdS nanoparticles produced using the mw aided technique was investigated larger than that of bulk CdS nanoparticles [6,7].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Simulation for Efficiency Enhancement of CZTS Based Thin Film Solar Cell Using SCAPS-1D

Shafi

Bibi

Khan³

et al. 2022

EEJP

View full text Add to dashboard Cite

In this paper we proposed a solar cell having model “Back Contact/CZTS/ZnCdS/ZnO/Front Contact”. CZTS is working as an absorber layer, ZnCdS as a buffer layer and ZnO as a window layer with back and front contacts. The Zn content was varied from 0% to 10% and bad gap was changed from 2.42 to 2.90 eV as described in the literature. The impact of this band gap variation has been observed on the performance of solar cell by using SCAPS-1D software. The efficiency was varied due to variation in bandgap of ZnCdS thin film layer. The simulation was carried out at 300K under A.M 1.5 G 1 Sun illumination. The energy bandgap diagram has been taken from SCAPS to explain the different parameters of solar cell. The effect of ZnCdS having different bandgap values was observed. Then the thickness of CZTS layer was varied to check its effect and hence at 3.0 um gave the imporved efficiency of 13.83% roundabout. After optimization of CZTS layer thickness, the effect of working temperature was examined on the performance of solar cell. The absorption coefficient variation from 1E+4 to 1E+9 cm-1 caused major effects on the characteristics parameters of solar cell along with on J-V characteristics and Quantum Efficiency curve. At 1E+9 cm-1 absorption coefficient the efficiency of solar cell boost up to 16.24%. This is the remarkable improvement in the efficiency of solar cell from 13.82% to 16.24%. After optimization of all parameters, simulation was run at 280K, having CZTS thickness of 3.5 um, with 10% content Zn in ZnCdS (2.90 eV), and absoption coefficient of 1E+9, the model efficiency reached up to 17.6% with Voc of 0.994 V, Jsc 26.1 mA/cm2 and Fill factor was 71.4%.

show abstract

Section: Introductionmentioning

confidence: 99%

A Numerical Simulation for Efficiency Enhancement of CZTS Based Thin Film Solar Cell Using SCAPS-1D

Shafi

Bibi

Khan³

et al. 2022

EEJP

View full text Add to dashboard Cite

show abstract

“…Many research groups have worked on IIB–VIA semiconductors substituted by IIA elements. According to Choubey et al, the nanoparticles doping of ZnSe with alkaline earth metal Mg enhances the functional and structural property, thus making it important for future applications [11]. Derkowska‐Zielinska et al uses experimental technique to determine the Correlation between optical and thermal properties of solid ZnMgSe solutions, and therefore, they proved that the energy band gap increases with increasing Mg content.…”

Section: Introductionmentioning

confidence: 99%

Mg substitution in zinc selenide: Enhanced optoelectronic and thermoelectric performance

Abdelhadi

Abid

Bensaid

2022

Int J of Quantum Chemistry

View full text Add to dashboard Cite

In this research, we applied a full‐potential linearized muffin‐tin orbital (FP‐LMTO) method to investigate the optoelectronic properties such as electronic structures and optical properties in the first phase, and then we try to improve the thermoelectric performance through the substitution by an element alkaline earth metal (Mg). The analysis of band structure and optical properties indicate a semiconductors character with wide directly band gap along alkaline earth metal element (Mg) substitution. The present comprehensive analyses of electronic and optical properties of these alloys predict that they could be useful for optoelectronic devices. Thermal parameters such as thermal conductivity and power factor show good improvement for very small substitutions; this tells me that our material has a ZT close to promising alloys in thermoelectric applications. This result encourages going deep in order to obtain good thermoelectric performance at high temperature which requires adjusting the concentration of carriers, thermal conductance and the amount of Mg. At the end, Mg doped ZnSe is a favorable material for both optoelectronic and thermoelectric application.

show abstract

“…Because of these excellent properties, ZnSe materials are widely used in nonlinear optical devices, flat panel displays, light emitting diodes (LEDs), lasers, logic gates, transistors, etc. [8][9][10][11][12][13][14]. In addition to thin films and macroscopic crystals, ZnSe has been obtained in a great variety of morphologies in the nanometric range, that make it suitable for applications such as field emitters, sensors, actuators, and many other optoelectronic devices [9,11,15,16].…”

Section: Introductionmentioning

confidence: 99%

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Liu

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

Although ZnSe has been widely studied due to its attractive electronic and optoelectronic properties, limited data on its plastic deformations are available. Through molecular dynamics simulations, we have investigated the indentations on the (001), (110), and (111) planes of ZnSe nano films. Our results indicate that the elastic modulus, incipient plasticity, elastic recovery ratio, and the structural evolutions during the indenting process of ZnSe nano films show obvious anisotropy. To analyze the correlation of structural evolution and mechanical responses, the atomic displacement vectors, atomic arrangements, and the dislocations of the indented samples are analyzed. Our simulations revealed that the plastic deformations of the indented ZnSe nano films are dominated by the nucleation and propagation of 1/2<110> type dislocations, and the symmetrically distributed prismatic loops emitted during the indenting process are closely related with the mechanical properties. By studying the evolutions of microstructures, the formation process of the dislocations, as well as the formation mechanisms of the emitted prismatic loops under the indented crystalline planes are discussed. The results presented in this work not only provide an answer for the questions about indentation responses of ZnSe nano films, but also offer insight into its plastic deformation mechanisms.

show abstract

Influence of Mg on Structural and Optical Properties of ZnSe Nanocrystals Synthesized by Microwave Assisted Technique

Cited by 11 publications

References 12 publications

A Numerical Simulation for Efficiency Enhancement of CZTS Based Thin Film Solar Cell Using SCAPS-1D

A Numerical Simulation for Efficiency Enhancement of CZTS Based Thin Film Solar Cell Using SCAPS-1D

Mg substitution in zinc selenide: Enhanced optoelectronic and thermoelectric performance

Orientation Dependent Mechanical Responses and Plastic Deformation Mechanisms of ZnSe Nano Films under Nanoindentation

Contact Info

Product

Resources

About