Computational study on the performance of zinc selenide as window layer for efficient GaAs solar cell (original) (raw)
Related papers
International Review on Modelling and Simulations, 2021
In this study, Zinc Telluride (ZnTe)-based solar cells, which are metallic dichalcogenide materials, are used as a solar cell absorbent with the formation appropriate for solar cell use. The data has been analyzed by SCAPS-1D structures software. The replacement of Cadmium Sulfide CdS (buffer) layer by other green and save suitable materials has been investigated. The substituted buffer layers have been ZnSe, ZnS, CdSe, and In2S3. The higher device performance efficiency parameters have been found out when using CdS and ZnSe as buffer layers. SCAPS-1D shows that the optimal p-n junction device eff]iciency parameters have been achieved when the ZnTe (absorber) layer thickness is between 1200-1500 nm, while the ZnSe (buffer) layer thickness is between 20-60 nm, and the thickness of ZnO:Al (window) layer is 25 nm. The results of the simulation provide important hints that may enhance the performance of the cell with empirical studies useful in practical implementation.
Energy Reports, 2020
In this paper, ZnSe nanoparticles (ZnSe NPs) were prepared by selenium nitrate and zinc metal sheets to improve the absorption coefficient that affects the solar cell. Also, core-shell structured ZnSe was prepared by atmospheric pressure plasma jet system. The structure properties and optical were described by X-ray (XRD) diffraction, and ZnSe NP absorbance measurements. Finally, with support from structural and optical studies, the current density-voltage (J-V) properties of n-ZnSe/p-Si solar films found that conversion efficiency strongly depends on strongly porous silicone time. fill factor (F.F) increase from (0.40 to 0.56) with increasing porous time and efficiency (η) increasing from 0.89 to 2 with increase porous time from 5min to 20 min. c
Materials Science and Engineering: B, 2021
In this work, we propose a feasible ZnO/MoS 2 /CZTS structure where the classical CdS buffer layer is replaced by a molybdenum disulfide buffer layer. This proposed solar cell is investigated thereafter using SCAPS code so as to determine the optimal value of each layer thickness constituting the cell of interest. The different photovoltaic parameters are determined versus each layer thickness. Our solar cell shows a conversion efficiency of about 23.69%. This corresponds to optimal thicknesses of 0.1 μm for ZnO window layer, 0.2 μm for MoS 2 buffer layer and 1 μm for CZTS absorber layer and common doping concentrations of 10 18 cm − 3 for each layer. This conversion efficiency compares reasonably with those previously quoted in the literature.
Performance Improvement of a Solar Cell Using Particular Window Material (GaP)
This paper represents a model to increase efficiency beyond the theoretical limit for a single junction solar cell. Conventionally, p-i-n junction solar cell was used with addition layer p+ and n+ to increase efficiency. However, some associated problems like low conversion efficiency and materials with the appropriate band gaps that can perfectly match the broad range solar radiation remain. therefore, this proposal consists of gap as a window layer due to overcome conventional limitations by using AlGaAs as a window layer.
A Comprehensive Study of CZTS Solar Cell Simulation with ZnSe Buffer Layer
The absorber layer for a CZTS solar cell is a compound semiconductor which has favorable electrical characteristics. Researchers are highly interested in this to investigate mostly because of its earth-abundancy and non-toxicity feature. In our research, we have used Zinc Selenide as a buffer layer for CZTS solar cell and investigated its parameters for the suitability of this as a buffer layer. A ZnO|ZnSe|CZTS structure was used for the simulation. We have optimized few parameters using SCAPS 3302 simulation software. The performance was recorded at different CZTS layer thickness, Buffer layer thickness, doping concentration and temperature. CZTS layer was varied between 0.5-4 micrometer, the buffer layer was varied between 0.03-0.1 micrometer, doping concentration was varied between 1*10 10-10 14 per cm 3 and temperature was varied between 300-400K. These parameters were optimized and the best energy conversion efficiency we got 11.49% with Voc= 0.8636V Jsc= 28.4825 mA/cm 2 , FF= 46.70%.
Role of earth-abundant selenium in different types of solar cells
Tania Dey (2021). Role of earth-abundant selenium in different types of solar cells. Journal of Electrical Engineering 72: 2. 132-139., 2021
This mini review covers a brief overview of three generations of solar cells, definition of major photovoltaic (PV) parameters, mechanisms, advantages and limitations of different types of solar cells such as multijunction, thin film, quantum dot, dye sensitized and perovskite solar cells, and what role the earth abundant selenium can play in each type of solar cells, followed by a comparative study of the benefits and challenges that selenium can offer in terms of PV properties, as well as the major players and cost analysis in this arena. As far as PV properties are concerned, BaZr(S 0.6 Se 0.4) 3 distorted chalcogenide perovskite solar cell can possibly lead the future, the next best ones being AlGaInP multijunction solar cell with Se emitter dopant and Se electrolyte additive in Zn-Cu-In-Se QD-sensitized solar cell. Cost-wise perovskite cell holds a lot of promise, but the efficacy of selenium needs to be explored further.
Numerical analysis a guide to improve the efficiency of experimentally designed solar cell
Applied Physics A, 2018
In this paper a numerical modelling guide is proposed about how to improve the efficiency of experimentally designed solar cells with the aid of numerical analysis. To validate the study presented in this paper, we first reproduce the results for experimentally designed solar cell in SCAPS with solar cell structure p-SnS/n-CdS having a conversion efficiency of 1.5%. After this device performance was optimized in solar cell capacitance simulator (SCAPS) by changing absorber layer thickness, buffer layer thickness, minority carrier lifetime, absorber acceptor doping concentration, buffer donor doping concentration and adding window layer. After optimization of physical device parameters and structure the new solar cell structure p-SnS/n-CdS/n-ZnO achieves power conversion efficiency (PCE) of 14.01% in SCAPS.
Optik, 2020
Intermediate band solar cell based on ZnTe:O with an efficiency of 17.46 % has been optimized using solar cell capacitance simulator (SCAPS). The impacts of defect densities in the band gap of the absorber layer, layer thicknesses and temperature variation on the intermediate band solar cell (IBSC) output were widely simulated. Quantum efficiencies of the intermediate band solar cell were simulated at different temperatures above room temperature. The simulation results indicate that the quantum efficiencies of the ZnTe:O devices decrease with the increasing temperature above room temperature. An intermediate band solar based on ZnTe:O showed a significant spectral response of below band gap photons, and demonstrated an increase of more than 100 % in power conversion efficiency in comparison to the ZnTe solar cell without oxygen doping.
International Review on Modelling and Simulations (IREMOS)
This study investigates the effect of using SnO2 as a window layer in a heterojunction Mo/ZnTe/ZnSe/SnO2 thin film-solar cell, which, when compared to other absorber layer materials, has the potential to be used in solar photovoltaic applications due to its low cost, non-toxic nature, and ease of availability. The research has aimed to compare the impact of SnO2 with ZnO, which has been previously used as a window layer. Numerical modeling using the Solar Cell Capacitance Simulator (SCAPS-1D) has been conducted to analyze the effect of temperature and defects in the thin-film layers on the overall performance of the solar cell. Efficiency parameters such as shortcircuit current density JSC, open-circuit voltage VOC, fill factor FF, and efficiency η, have been found to be influenced by temperature, and the effect of defects between the layers was analyzed. The optimal operating temperature for the solar cell with SnO2 as a window layer has been found to be 375 K, which has not required cooling to maintain cell efficiency, unlike the optimal operating temperature of 300 K for the solar cell with ZnO as a window layer. The simulation results have showed that using SnO2 as a window layer is advantageous due to the higher optimal operating temperature and the absence of the need for cooling to maintain cell efficiency. The study highlights the significance of quality control during fabrication in order to minimize defects and enhance the efficiency of the solar cell.