Issue 8, 2024

Triple-junction perovskite–perovskite–silicon solar cells with power conversion efficiency of 24.4%

Abstract

The recent tremendous progress in monolithic perovskite-based double-junction solar cells is just the start of a new era of ultra-high-efficiency multi-junction photovoltaics. We report on triple-junction perovskite–perovskite–silicon solar cells with a record power conversion efficiency of 24.4%. Optimizing the light management of each perovskite sub-cell (∼1.84 and ∼1.52 eV for top and middle cells, respectively), we maximize the current generation up to 11.6 mA cm−2. Key to this achievement was our development of a high-performance middle perovskite sub-cell, employing a stable pure-α-phase high-quality formamidinium lead iodide perovskite thin film (free of wrinkles, cracks, and pinholes). This enables a high open-circuit voltage of 2.84 V in a triple junction. Non-encapsulated triple-junction devices retain up to 96.6% of their initial efficiency if stored in the dark at 85 °C for 1081 h.

Graphical abstract: Triple-junction perovskite–perovskite–silicon solar cells with power conversion efficiency of 24.4%

Supplementary files

Article information

Article type
Paper
Submitted
30 Oct 2023
Accepted
09 Feb 2024
First published
13 Feb 2024
This article is Open Access
Creative Commons BY license

Energy Environ. Sci., 2024,17, 2800-2814

Triple-junction perovskite–perovskite–silicon solar cells with power conversion efficiency of 24.4%

H. Hu, S. X. An, Y. Li, S. Orooji, R. Singh, F. Schackmar, F. Laufer, Q. Jin, T. Feeney, A. Diercks, F. Gota, S. Moghadamzadeh, T. Pan, M. Rienäcker, R. Peibst, B. A. Nejand and U. W. Paetzold, Energy Environ. Sci., 2024, 17, 2800 DOI: 10.1039/D3EE03687A

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