RT Journal Article
T1 Optimization of optical absorption and transport layer effects on Perovskite/ACIGS tandem solar cells
A1 Boukortt, Nour El I.
A1 García Loureiro, Antonio Jesús
A1 Lawaert, Johan
K1 Tandem
K1 Tunneling
K1 Interface
K1 Light
K1 Modeling
AB 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 Voc loss of ∼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 Jsc of 18.51 mA/cm2, a Voc 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 × 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.
PB Elsevier
SN 0927-0248
YR 2025
FD 2025-09-05
LK https://hdl.handle.net/10347/43708
UL https://hdl.handle.net/10347/43708
LA eng
NO 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, 113943. 10.1016/j.solmat.2025.113943
NO No funding was received to conduct this study.
DS Minerva
RD 29 abr 2026