Optimization of optical absorption and transport layer effects on Perovskite/ACIGS tandem solar cells
- Author
- Nour El I Boukortt (UGent) , Antonio Garcia Loureiro and Johan Lauwaert (UGent)
- Organization
- Abstract
- This study presents a comprehensive numerical investigation of two-terminal (2T) perovskite/ACIGS tandem solar cells using Silvaco TCAD tools, aiming to guide the design of high-efficiency tandem configuration. The subcells were calibrated based on data from experimentally fabricated perovskite and ACIGS devices, with a band-to-band tunneling junction employed to enable efficient carrier recombination. Despite successful stacking, the tandem configuration exhibits a V-oc loss of similar to 28 mV before subcells matching, attributed to interfacial limitations in the top subcell. To address this, we explored the interplay of optical transparency, defect passivation, and charge transport by (1) selecting perovskite materials with tailored optoelectronic properties and thickness profiles, and (2) optimizing the electron transport layer (ETL) to minimize interfacial trap density and enhance charge extraction. Our optimized tandem structure achieves a simulated power conversion efficiency of 30.71 %, with a J(sc) of 18.51 mA/cm(2), a V-oc of 2.05 V, and an FF of 80.97 %. The device further demonstrates enhanced thermal stability, with improved temperature coefficients for voltage (-0.164 %K-1), current (-3.85 x 10(-6) %K-1), and power (-0.183 %K-1), outperforming baseline models and silicon references. Comparative benchmarking confirms the effectiveness of the proposed strategy. This work not only advances predictive modeling of tandem photovoltaics but also offers actionable insights for overcoming interfacial and optical bottlenecks, paving the way for next-generation high-performance solar technologies.
- Keywords
- Tandem, Tunneling, Interface, Light, Modeling, EFFICIENCY
Downloads
-
publisher version.pdf
- full text (Published version)
- |
- open access
- |
- |
- 8.42 MB
Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01K4QGPG7PC8A5B978YX0CH03C
- MLA
- Boukortt, Nour El I., et al. “Optimization of Optical Absorption and Transport Layer Effects on Perovskite/ACIGS Tandem Solar Cells.” SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 295, 2026, doi:10.1016/j.solmat.2025.113943.
- APA
- Boukortt, N. E. I., Garcia Loureiro, A., & Lauwaert, J. (2026). Optimization of optical absorption and transport layer effects on Perovskite/ACIGS tandem solar cells. SOLAR ENERGY MATERIALS AND SOLAR CELLS, 295. https://doi.org/10.1016/j.solmat.2025.113943
- Chicago author-date
- Boukortt, Nour El I, Antonio Garcia Loureiro, and Johan Lauwaert. 2026. “Optimization of Optical Absorption and Transport Layer Effects on Perovskite/ACIGS Tandem Solar Cells.” SOLAR ENERGY MATERIALS AND SOLAR CELLS 295. https://doi.org/10.1016/j.solmat.2025.113943.
- Chicago author-date (all authors)
- Boukortt, Nour El I, Antonio Garcia Loureiro, and Johan Lauwaert. 2026. “Optimization of Optical Absorption and Transport Layer Effects on Perovskite/ACIGS Tandem Solar Cells.” SOLAR ENERGY MATERIALS AND SOLAR CELLS 295. doi:10.1016/j.solmat.2025.113943.
- Vancouver
- 1.Boukortt NEI, Garcia Loureiro A, Lauwaert J. Optimization of optical absorption and transport layer effects on Perovskite/ACIGS tandem solar cells. SOLAR ENERGY MATERIALS AND SOLAR CELLS. 2026;295.
- IEEE
- [1]N. E. I. Boukortt, A. Garcia Loureiro, and J. Lauwaert, “Optimization of optical absorption and transport layer effects on Perovskite/ACIGS tandem solar cells,” SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 295, 2026.
@article{01K4QGPG7PC8A5B978YX0CH03C,
abstract = {{This study presents a comprehensive numerical investigation of two-terminal (2T) perovskite/ACIGS tandem solar cells using Silvaco TCAD tools, aiming to guide the design of high-efficiency tandem configuration. The subcells were calibrated based on data from experimentally fabricated perovskite and ACIGS devices, with a band-to-band tunneling junction employed to enable efficient carrier recombination. Despite successful stacking, the tandem configuration exhibits a V-oc loss of similar to 28 mV before subcells matching, attributed to interfacial limitations in the top subcell. To address this, we explored the interplay of optical transparency, defect passivation, and charge transport by (1) selecting perovskite materials with tailored optoelectronic properties and thickness profiles, and (2) optimizing the electron transport layer (ETL) to minimize interfacial trap density and enhance charge extraction. Our optimized tandem structure achieves a simulated power conversion efficiency of 30.71 %, with a J(sc) of 18.51 mA/cm(2), a V-oc of 2.05 V, and an FF of 80.97 %. The device further demonstrates enhanced thermal stability, with improved temperature coefficients for voltage (-0.164 %K-1), current (-3.85 x 10(-6) %K-1), and power (-0.183 %K-1), outperforming baseline models and silicon references. Comparative benchmarking confirms the effectiveness of the proposed strategy. This work not only advances predictive modeling of tandem photovoltaics but also offers actionable insights for overcoming interfacial and optical bottlenecks, paving the way for next-generation high-performance solar technologies.}},
articleno = {{113943}},
author = {{Boukortt, Nour El I and Garcia Loureiro, Antonio and Lauwaert, Johan}},
issn = {{0927-0248}},
journal = {{SOLAR ENERGY MATERIALS AND SOLAR CELLS}},
keywords = {{Tandem,Tunneling,Interface,Light,Modeling,EFFICIENCY}},
language = {{eng}},
pages = {{12}},
title = {{Optimization of optical absorption and transport layer effects on Perovskite/ACIGS tandem solar cells}},
url = {{http://doi.org/10.1016/j.solmat.2025.113943}},
volume = {{295}},
year = {{2026}},
}
- Altmetric
- View in Altmetric
- Web of Science
- Times cited: