Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Efficient Perovskite-Perovskite-Organic Triple-Junction Solar Cells Via Compositional and Interfacial Engineering
Chrysa Aivalioti1, Temur Maksudov1, Essa A. Alharbi2, Spyros Doukas3, Elefterios Lidorikis3, Thomas D. Anthopoulos1,4, Shadi Fatayer1
1Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900 Saudi Arabia
2Microelectronics and Semiconductor Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
3Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110, Greece
4Henry Royce Institute and Photon Science Institute, Department of Electrical and Electronic Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
The Shockley-Queisser (S-Q) theoretical efficiency limit for a single-junction solar cell is approximately 33.7%. [1] To surpass the S-Q limit, tandem (multi-junction) architecture composed of multiple subcells has emerged as a promising strategy. Combining single-junction perovskite solar cells (PSCs) with organic photovoltaics (OPVs) is attractive because it merges the advantages of both technologies, with OPVs serving as the top subcell and PSCs as the bottom subcell.
Here, we develop highly efficient triple-junction tandem solar cells by integrating two perovskite subcells and one organic subcell as the front, middle, and back subcells, respectively. Theoretical calculations are used to guide the identification of optimal bandgap combinations for each subcell, along with thickness optimization to maximize solar spectrum absorption.[2] The incorporation of rubidium (Rb⁺) ions and introduction of urea suppresses halide segregation and increases the grains size of wide and mid-bandgap perovskites, respectively, enhancing their individual performance. As a result, the triple-junction tandem delivers a maximum power conversion efficiency (PCE) of approximately 23.03% and an overall open-circuit voltage (Voc) of 3.31 V. [3]
(*) corresponding & presenting author: Chrysa Aivalioti, chrysoula.aivalioti@kaust.edu.sa
References
[1] S. Rühle, Sol. Energy 2016, 130, 139.
[2] M. Heydarian, M. Heydarian, P. Schygulla, S. K. Reichmuth, A. J. Bett, J. Hohl-Ebinger, F. Schindler, M. Hermle, M. C. Schubert, P. S. C. Schulze, J. Borchert, S. W. Glunz, Energy Environ. Sci. 2024, 17, 1781.
[3] T. Maksudov, C. Aivalioti, E. A. Alharbi, J. P. Jurado, S. Doukas, L. Luo, C. E. Petoukhoff, M. Marengo, W. Ogieglo, M. S. Albishi, G. Kakavelakis, T. F. Alhuwaymel, A. Zaman, A. Alanzi, L. Panagiotidis, I. Pinnau, S. De Wolf, F. Laquai, E. Lidorikis, M. Heeney, S. Fatayer, O. M. Bakr, F. H. Isikgor, T. D. Anthopoulos, Adv. Funct. Mater. 2026, 36, e76715.
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