Publication date: 22nd July 2026
Perovskite-based multi-junction photovoltaics are emerging as a promising pathway to surpass the efficiency limits of single-junction silicon technology while maintaining compatibility with industrial manufacturing. This contribution will present recent advances from CSEM and collaborators on high-efficiency 2-terminal perovskite/silicon tandem and perovskite/perovskite/silicon triple-junction solar cells, with particular emphasis on scalability, efficiency, sustainability, and long-term operational durability.
A central focus will be placed on the development of industry-compatible fabrication approaches for both the perovskite absorber and front-side metallization. We will demonstrate that replacing the thermally evaporated metal grid typically used in laboratory-scale devices with screen-printed electrodes results in only minimal performance losses, enabling power conversion efficiencies exceeding 33%. Furthermore, the use of low-silver-content metallization pastes will be shown to have only a limited impact on device performance while significantly improving material sustainability.
Beyond efficiency and scalability, the presentation will address the critical challenge of durability. Recent cell- and module-level developments that enhance resilience under thermal cycling and elevated-temperature light-soaking stress conditions will be presented. These results will be complemented by an overview of the dominant degradation mechanisms affecting perovskite-based multi-junction devices and the mitigation strategies required to achieve the operational lifetimes demanded for commercial deployment.
Together, these advances illustrate the rapid progress toward highly efficient, scalable, and durable perovskite-based tandem and triple-junction photovoltaic technologies, bringing them closer to industrial implementation.
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International Conference on Hybrid and Organic Photovoltaics
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