scholarly journals Roles of bandgrading, lifetime, band alignment, and carrier concentration in high-efficiency CdSeTe solar cells

2020 ◽  
Vol 128 (5) ◽  
pp. 053102 ◽  
Author(s):  
X. Zheng ◽  
E. Colegrove ◽  
J. N. Duenow ◽  
J. Moseley ◽  
W. K. Metzger
Keyword(s):  
Solar Cells ◽  
Carrier Concentration ◽  
High Efficiency ◽  
Band Alignment

Accessing the band alignment in high efficiency Cu(In,Ga)(Se,S)2 (CIGSSe) solar cells with an InxSy:Na buffer based on temperature dependent measurements and simulations

2018 ◽  
Vol 123 (15) ◽  
pp. 155701 ◽  
Author(s):  
Johannes Schoneberg ◽  
Jörg Ohland ◽  
Patrick Eraerds ◽  
Thomas Dalibor ◽  
Jürgen Parisi ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Band Alignment ◽  
Temperature Dependent

Towards high efficiency Cd-Free Sb2Se3 solar cells by the band alignment optimization

2020 ◽  
Vol 212 ◽  
pp. 110581 ◽  
Author(s):  
Iman Gharibshahian ◽  
Ali A. Orouji ◽  
Samaneh Sharbati
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Band Alignment

scholarly journals Numerical Modelling Analysis for Carrier Concentration Level Optimization of CdTe Heterojunction Thin Film–Based Solar Cell with Different Non-Toxic Metal Chalcogenide Buffer Layers Replacements: Using SCAPS-1D Software

2021 ◽  
Author(s):  
Samer H. Zyoud ◽  
Ahed H. Zyoud ◽  
Naser M. Ahmed ◽  
Atef Abdekader
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Carrier Concentration ◽  
Buffer Layer ◽  
High Efficiency ◽  
Toxic Metal ◽  
Absorber Layer ◽  
Buffer Layers ◽  
Cds Thin Film

Cadmium telluride (CdTe), a metallic dichalcogenide material, has been utilized as an absorber layer for thin film-based solar cells with appropriate configurations, and the SCAPS-1D structures program has been used to evaluate the results. In both known and developing thin film photovoltaic systems, a CdS thin film buffer layer has been frequently employed as a traditional n-type heterojunction partner. In this study, numerical simulation was used to find a suitable non-toxic material for the buffer layer instead of CdS, among various types of buffer layers (ZnSe, ZnO, ZnS, and In2S3), and carrier concentrations for the absorber layer (NA) and buffer layer (ND) were varied to determine the optimal simulation parameters. carrier concentrations (NA from 2 x 1012 cm-3 to 2 x 1017 cm-3 and ND from 1 x 1016 cm-3 to 1 x 1022 ??−3) have been differed. The results showed that the CdS as buffer layer based CdTe absorber layer solar cell has the highest efficiency (?%) of 17.43%. Furthermore, high conversion efficiencies of 17.42% and 16.27% have been found for ZnSe and ZnO based buffer layers, respectively. As a result, ZnO and ZnSe are potential candidates for replacing the CdS buffer layer in thin-film solar cells. Here, the absorber (CdTe) and buffer (ZnSe) layers were chosen to improve the efficiency by finding the optimal density of the carrier concentration (acceptor and donor). The simulation findings above provide helpful recommendations for fabricating high-efficiency metal oxide-based solar cells in the lab.

scholarly journals Band alignment of front contact layers for high-efficiency CdTe solar cells

2016 ◽  
Vol 157 ◽  
pp. 266-275 ◽  
Author(s):  
J.M. Kephart ◽  
J.W. McCamy ◽  
Z. Ma ◽  
A. Ganjoo ◽  
F.M. Alamgir ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Band Alignment ◽  
Cdte Solar Cells

scholarly journals Graded Carrier Concentration Absorber Profile for High Efficiency CIGS Solar Cells

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Antonino Parisi ◽  
Riccardo Pernice ◽  
Vincenzo Rocca ◽  
Luciano Curcio ◽  
Salvatore Stivala ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Carrier Concentration ◽  
High Efficiency ◽  
Energy Gap ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Doping Density ◽  
Cigs Solar Cells

We demonstrate an innovative CIGS-based solar cells model with a graded doping concentration absorber profile, capable of achieving high efficiency values. In detail, we start with an in-depth discussion concerning the parametrical study of conventional CIGS solar cells structures. We have used the wxAMPS software in order to numerically simulate cell electrical behaviour. By means of simulations, we have studied the variation of relevant physical and chemical parameters—characteristic of such devices—with changing energy gap and doping density of the absorber layer. Our results show that, in uniform CIGS cell, the efficiency, the open circuit voltage, and short circuit current heavily depend on CIGS band gap. Our numerical analysis highlights that the band gap value of 1.40 eV is optimal, but both the presence of Molybdenum back contact and the high carrier recombination near the junction noticeably reduce the crucial electrical parameters. For the above-mentioned reasons, we have demonstrated that the efficiency obtained by conventional CIGS cells is lower if compared to the values reached by our proposed graded carrier concentration profile structures (up to 21%).

scholarly journals Numerical Modelling Analysis for Carrier Concentration Level Optimization of CdTe Heterojunction Thin Film–Based Solar Cell with Different Non–Toxic Metal Chalcogenide Buffer Layers Replacements: Using SCAPS–1D Software

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1454 ◽  
Author(s):  
Samer H. Zyoud ◽  
Ahed H. Zyoud ◽  
Naser M. Ahmed ◽  
Atef F. I. Abdelkader
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Carrier Concentration ◽  
Buffer Layer ◽  
High Efficiency ◽  
Toxic Metal ◽  
Absorber Layer ◽  
Buffer Layers ◽  
Cds Thin Film

Cadmium telluride (CdTe), a metallic dichalcogenide material, was utilized as an absorber layer for thin film–based solar cells with appropriate configurations and the SCAPS–1D structures program was used to evaluate the results. In both known and developing thin film photovoltaic systems, a CdS thin–film buffer layer is frequently employed as a traditional n–type heterojunction partner. In this study, numerical simulation was used to determine a suitable non–toxic material for the buffer layer that can be used instead of CdS, among various types of buffer layers (ZnSe, ZnO, ZnS and In2S3) and carrier concentrations for the absorber layer (NA) and buffer layer (ND) were varied to determine the optimal simulation parameters. Carrier concentrations (NA from 2 × 1012 cm−3 to 2 × 1017 cm−3 and ND from 1 × 1016 cm−3 to 1 × 1022 cm−3) differed. The results showed that the use of CdS as a buffer–layer–based CdTe absorber layer for solar cell had the highest efficiency (%) of 17.43%. Furthermore, high conversion efficiencies of 17.42% and 16.27% were for the ZnSe and ZnO-based buffer layers, respectively. As a result, ZnO and ZnSe are potential candidates for replacing the CdS buffer layer in thin–film solar cells. Here, the absorber (CdTe) and buffer (ZnSe) layers were chosen to improve the efficiency by finding the optimal density of the carrier concentration (acceptor and donor). The simulation findings above provide helpful recommendations for fabricating high–efficiency metal oxide–based solar cells in the lab.

Band alignment of CdTe with MoOx oxide and fabrication of high efficiency CdTe solar cells

Solar Energy ◽  
2018 ◽  
Vol 162 ◽  
pp. 637-645 ◽  
Author(s):  
Dezhao Wang ◽  
Ruilong Yang ◽  
Lingling Wu ◽  
Kai Shen ◽  
Deliang Wang
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Band Alignment ◽  
Cdte Solar Cells

Band Alignment Engineering Towards High Efficiency Carbon‐Based Inorganic Planar CsPbIBr 2 Perovskite Solar Cells

ChemSusChem ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 2318-2325 ◽  
Author(s):  
Weidong Zhu ◽  
Zeyang Zhang ◽  
Wenming Chai ◽  
Qianni Zhang ◽  
Dazheng Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Band Alignment ◽  
Carbon Based
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