Journal Article

FZJ-2025-03666

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png An efficient ALD- and noble metal-free charge recombination architecture for monolithic all-perovskite tandem solar cells

Wei, J. ; Huang, T. ; Peng, W. ; He, Y. ; Feng, W. ; Hao, Y. ; Brabec, C.FZJ* ; Mai, Y. (Corresponding author) ; Guo, F. (Corresponding author)

2025
RSC London ˜[u.a.]œ

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Please use a persistent id in citations: doi:10.1039/D5TA04259C  doi:10.34734/FZJ-2025-03666

Abstract: The currently efficient all-perovskite tandem solar cells (all-PTSCs) are built on the workhorse charge recombination layers (CRLs) composed of ALD-SnOX/noble metal/PEDOT:PSS. However, the susceptibility of optoelectronic properties of SnOX to atomic growth conditions and the use of rare metals constrain their promise for commercial deployment. Here, we design an efficient and robust CRL consisting of a layer sequence of Cr/ITO/PEDOT:PSS. The conformally grown thin Cr layer serves as a critical barrier to protect the underlying perovskite from damage during ITO sputtering. Essentially, the entire stack of the CRL exhibits superior resistance to strong polar solvents during the deposition of top narrow-bandgap perovskites. On this basis, high-performance monolithic all-PTSCs are reproducibly fabricated, yielding a state-of-the-art efficiency of 26.56%, alongside an impressive fill factor (FF) of 80.6%.

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IET-2)

Research Program(s):

1. 1213 - Cell Design and Development (POF4-121) (POF4-121)

Appears in the scientific report 2025

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 10 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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