Numerical Simulation of the Performance of the Cu(In,Ga)Se<sub>2</sub>-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width

Daouda Oubda; Alfred Bayala; Winde Nongue Daniel Koumbem; Yacouba Coulibaly; Francois Zougmore

doi:doi:10.11648/j.ajmp.20261505.11

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Numerical Simulation of the Performance of the Cu(In,Ga)Se₂-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width

Daouda Oubda^*

, Alfred Bayala

, Winde Nongue Daniel Koumbem

, Yacouba Coulibaly

, Francois Zougmore

Published in American Journal of Modern Physics (Volume 15, Issue 5)

Received: 17 August 2026 Accepted: 1 September 2026 Published: 20 September 2026

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Abstract

In a global context marked by constantly increasing energy demand, dwindling fossil fuel resources, and growing environmental concerns, the search for alternative, clean, and sustainable energy sources has become essential. Several questions remain regarding the production of abundant, low-cost energy without environmental impact. Therefore, optimizing the performance of thin-film photovoltaic (PV) solar cells has been the subject of numerous studies. Our study falls within this perspective and analyzes the role of the space charge region (SCR) in the performance optimization process. The aim of our study is to obtain improved electrical parameters. To achieve this objective, we opted for numerical simulation with One-dimensional Solar Cell Capacities Simulation software (SCAPS-1D) of the Mo/CIGS/CdS/ZnO structure. The results obtained show a significant decrease in the open circuit voltage (V_OC) and the fill factor (FF) as the SCR width increases. The short-circuit current density (J_SC) values increase with increasing SCR width and reach their maximum at a SCR value of 600 nm. As for the conversion efficiency, the values decrease for 100 nm≤ W_SCR≤200 nm then remain almost constant for 200 nmSCR<600 nm. Beyond 600 nm, the conversion efficiency values gradually decrease. All the results show the need for an average SCR to obtain high performance and good stability (200≤W_SCR≤700 nm). Future research will consider the effects of donor and acceptor density in the performance optimization process.

Published in	American Journal of Modern Physics (Volume 15, Issue 5)
DOI	10.11648/j.ajmp.20261505.11
Page(s)	140-147
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2026. Published by Science Publishing Group

Keywords

Solar PV Energy, Solar PV Cell, Space Charge Region, Internal Electric Field Strength, Numerical Simulation, Electrical Parameters

References

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Oubda, D., Bayala, A., Koumbem, W. N. D., Coulibaly, Y., Zougmore, F. (2026). Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width. American Journal of Modern Physics, 15(5), 140-147. https://doi.org/10.11648/j.ajmp.20261505.11

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ACS Style

Oubda, D.; Bayala, A.; Koumbem, W. N. D.; Coulibaly, Y.; Zougmore, F. Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width. Am. J. Mod. Phys. 2026, 15(5), 140-147. doi: 10.11648/j.ajmp.20261505.11

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AMA Style

Oubda D, Bayala A, Koumbem WND, Coulibaly Y, Zougmore F. Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width. Am J Mod Phys. 2026;15(5):140-147. doi: 10.11648/j.ajmp.20261505.11

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@article{10.11648/j.ajmp.20261505.11,
  author = {Daouda Oubda and Alfred Bayala and Winde Nongue Daniel Koumbem and Yacouba Coulibaly and Francois Zougmore},
  title = {Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width},
  journal = {American Journal of Modern Physics},
  volume = {15},
  number = {5},
  pages = {140-147},
  doi = {10.11648/j.ajmp.20261505.11},
  url = {https://doi.org/10.11648/j.ajmp.20261505.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmp.20261505.11},
  abstract = {In a global context marked by constantly increasing energy demand, dwindling fossil fuel resources, and growing environmental concerns, the search for alternative, clean, and sustainable energy sources has become essential. Several questions remain regarding the production of abundant, low-cost energy without environmental impact. Therefore, optimizing the performance of thin-film photovoltaic (PV) solar cells has been the subject of numerous studies. Our study falls within this perspective and analyzes the role of the space charge region (SCR) in the performance optimization process. The aim of our study is to obtain improved electrical parameters. To achieve this objective, we opted for numerical simulation with One-dimensional Solar Cell Capacities Simulation software (SCAPS-1D) of the Mo/CIGS/CdS/ZnO structure. The results obtained show a significant decrease in the open circuit voltage (VOC) and the fill factor (FF) as the SCR width increases. The short-circuit current density (JSC) values increase with increasing SCR width and reach their maximum at a SCR value of 600 nm. As for the conversion efficiency, the values decrease for 100 nm≤ WSCR≤200 nm then remain almost constant for 200 nmSCRSCR≤700 nm). Future research will consider the effects of donor and acceptor density in the performance optimization process.},
 year = {2026}
}

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TY  - JOUR
T1  - Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width
AU  - Daouda Oubda
AU  - Alfred Bayala
AU  - Winde Nongue Daniel Koumbem
AU  - Yacouba Coulibaly
AU  - Francois Zougmore
Y1  - 2026/09/20
PY  - 2026
N1  - https://doi.org/10.11648/j.ajmp.20261505.11
DO  - 10.11648/j.ajmp.20261505.11
T2  - American Journal of Modern Physics
JF  - American Journal of Modern Physics
JO  - American Journal of Modern Physics
SP  - 140
EP  - 147
PB  - Science Publishing Group
SN  - 2326-8891
UR  - https://doi.org/10.11648/j.ajmp.20261505.11
AB  - In a global context marked by constantly increasing energy demand, dwindling fossil fuel resources, and growing environmental concerns, the search for alternative, clean, and sustainable energy sources has become essential. Several questions remain regarding the production of abundant, low-cost energy without environmental impact. Therefore, optimizing the performance of thin-film photovoltaic (PV) solar cells has been the subject of numerous studies. Our study falls within this perspective and analyzes the role of the space charge region (SCR) in the performance optimization process. The aim of our study is to obtain improved electrical parameters. To achieve this objective, we opted for numerical simulation with One-dimensional Solar Cell Capacities Simulation software (SCAPS-1D) of the Mo/CIGS/CdS/ZnO structure. The results obtained show a significant decrease in the open circuit voltage (VOC) and the fill factor (FF) as the SCR width increases. The short-circuit current density (JSC) values increase with increasing SCR width and reach their maximum at a SCR value of 600 nm. As for the conversion efficiency, the values decrease for 100 nm≤ WSCR≤200 nm then remain almost constant for 200 nmSCRSCR≤700 nm). Future research will consider the effects of donor and acceptor density in the performance optimization process.
VL  - 15
IS  - 5
ER  -

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Author Information

Daouda Oubda

Materials and Environment Laboratory, Joseph Ki-Zerbo University, Ouagadougou, Burkina Faso

Contact Email

http://orcid.org/0009-0003-2744-5077
Alfred Bayala

Thermal and Renewable Energy Laboratory, Joseph Ki-Zerbo University, Ouagadougou, Burkina Faso

Contact Email

http://orcid.org/0009-0009-6439-8912
Winde Nongue Daniel Koumbem

Thermal and Renewable Energy Laboratory, Joseph Ki-Zerbo University, Ouagadougou, Burkina Faso

Contact Email

http://orcid.org/0009-0001-0144-7731
Yacouba Coulibaly

Laboratory of Materials, Heliophysics and Environment, Nazi Boni University, Bobo-Dioulasso, Burkina Faso

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http://orcid.org/0009-0007-5948-781X
Francois Zougmore

Materials and Environment Laboratory, Joseph Ki-Zerbo University, Ouagadougou, Burkina Faso

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APA Style

Oubda, D., Bayala, A., Koumbem, W. N. D., Coulibaly, Y., Zougmore, F. (2026). Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width. American Journal of Modern Physics, 15(5), 140-147. https://doi.org/10.11648/j.ajmp.20261505.11

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ACS Style

Oubda, D.; Bayala, A.; Koumbem, W. N. D.; Coulibaly, Y.; Zougmore, F. Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width. Am. J. Mod. Phys. 2026, 15(5), 140-147. doi: 10.11648/j.ajmp.20261505.11

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AMA Style

Oubda D, Bayala A, Koumbem WND, Coulibaly Y, Zougmore F. Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width. Am J Mod Phys. 2026;15(5):140-147. doi: 10.11648/j.ajmp.20261505.11

Copy | Download

@article{10.11648/j.ajmp.20261505.11,
  author = {Daouda Oubda and Alfred Bayala and Winde Nongue Daniel Koumbem and Yacouba Coulibaly and Francois Zougmore},
  title = {Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width},
  journal = {American Journal of Modern Physics},
  volume = {15},
  number = {5},
  pages = {140-147},
  doi = {10.11648/j.ajmp.20261505.11},
  url = {https://doi.org/10.11648/j.ajmp.20261505.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmp.20261505.11},
  abstract = {In a global context marked by constantly increasing energy demand, dwindling fossil fuel resources, and growing environmental concerns, the search for alternative, clean, and sustainable energy sources has become essential. Several questions remain regarding the production of abundant, low-cost energy without environmental impact. Therefore, optimizing the performance of thin-film photovoltaic (PV) solar cells has been the subject of numerous studies. Our study falls within this perspective and analyzes the role of the space charge region (SCR) in the performance optimization process. The aim of our study is to obtain improved electrical parameters. To achieve this objective, we opted for numerical simulation with One-dimensional Solar Cell Capacities Simulation software (SCAPS-1D) of the Mo/CIGS/CdS/ZnO structure. The results obtained show a significant decrease in the open circuit voltage (VOC) and the fill factor (FF) as the SCR width increases. The short-circuit current density (JSC) values increase with increasing SCR width and reach their maximum at a SCR value of 600 nm. As for the conversion efficiency, the values decrease for 100 nm≤ WSCR≤200 nm then remain almost constant for 200 nmSCRSCR≤700 nm). Future research will consider the effects of donor and acceptor density in the performance optimization process.},
 year = {2026}
}

Copy | Download

TY  - JOUR
T1  - Numerical Simulation of the Performance of the Cu(In,Ga)Se2-based Solar Photovoltaic Cell as a Function of the Space Charge Region Width
AU  - Daouda Oubda
AU  - Alfred Bayala
AU  - Winde Nongue Daniel Koumbem
AU  - Yacouba Coulibaly
AU  - Francois Zougmore
Y1  - 2026/09/20
PY  - 2026
N1  - https://doi.org/10.11648/j.ajmp.20261505.11
DO  - 10.11648/j.ajmp.20261505.11
T2  - American Journal of Modern Physics
JF  - American Journal of Modern Physics
JO  - American Journal of Modern Physics
SP  - 140
EP  - 147
PB  - Science Publishing Group
SN  - 2326-8891
UR  - https://doi.org/10.11648/j.ajmp.20261505.11
AB  - In a global context marked by constantly increasing energy demand, dwindling fossil fuel resources, and growing environmental concerns, the search for alternative, clean, and sustainable energy sources has become essential. Several questions remain regarding the production of abundant, low-cost energy without environmental impact. Therefore, optimizing the performance of thin-film photovoltaic (PV) solar cells has been the subject of numerous studies. Our study falls within this perspective and analyzes the role of the space charge region (SCR) in the performance optimization process. The aim of our study is to obtain improved electrical parameters. To achieve this objective, we opted for numerical simulation with One-dimensional Solar Cell Capacities Simulation software (SCAPS-1D) of the Mo/CIGS/CdS/ZnO structure. The results obtained show a significant decrease in the open circuit voltage (VOC) and the fill factor (FF) as the SCR width increases. The short-circuit current density (JSC) values increase with increasing SCR width and reach their maximum at a SCR value of 600 nm. As for the conversion efficiency, the values decrease for 100 nm≤ WSCR≤200 nm then remain almost constant for 200 nmSCRSCR≤700 nm). Future research will consider the effects of donor and acceptor density in the performance optimization process.
VL  - 15
IS  - 5
ER  -

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