Journal Article FZJ-2026-01121

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Enhancing the viability of p-i-n perovskite solar cells with printable carbon cathode: Origin of polarity inversion

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2026
Elsevier B.V. Amsterdam

Joule 10(1), 102224 - () [10.1016/j.joule.2025.102224]

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Abstract: Printable rear electrodes represent a key enabling technology for the upscaling of perovskite solar cells (PSCs). Carbon electrodes are appealing candidates widely employed in n-i-p (so-called “conventional”) architectures, but their integration into p-i-n (so-called “inverted”) architectures is prohibited by interfacial energetic mismatch. We address this challenge by introducing a tin oxide (SnOx) interlayer with desirable mechanical durability and n-doping level. We show in detail how the tailored interlayer converts carbon from a hole-collecting anode to an electron-collecting cathode and how the electron-extraction barrier is minimized, narrowing the efficiency gap between carbon (21.8%) and silver (24.0%) electrodes. The advancement results in a remarkably improved viability of the PSCs: a modest drop in efficiency is outweighed by a 3-fold improvement in projected operational lifetime (>8,000 h) and a 60% reduction in the bill of materials. These results underscore the potential of carbon as a cost-effective alternative to silver in the industrialization of p-i-n PSCs.

Classification:

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 2026
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Medline ; Creative Commons Attribution CC BY 4.0 ; OpenAccess ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 30 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
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Open Access

 Datensatz erzeugt am 2026-01-27, letzte Änderung am 2026-02-23


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