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All‐Printed Roll‐to‐Roll Perovskite Photovoltaics Enabled by Solution‐Processed Carbon Electrode

David Beynon Orcid Logo, Ershad Parvazian, Katherine Elizabeth Anne Hooper Orcid Logo, James McGettrick Orcid Logo, Rahul Patidar, Tom Dunlop Orcid Logo, Zhengfei Wei, Peter Davies, Rodrigo Garcia Rodriguez, Matt Carnie Orcid Logo, Matthew Davies Orcid Logo, Trystan Watson Orcid Logo, Katherine Hooper, Pete Davies

Advanced Materials, Volume: 35, Issue: 16, Start page: 2208561

Swansea University Authors: David Beynon Orcid Logo, Ershad Parvazian, Katherine Elizabeth Anne Hooper Orcid Logo, James McGettrick Orcid Logo, Rahul Patidar, Tom Dunlop Orcid Logo, Zhengfei Wei, Peter Davies, Rodrigo Garcia Rodriguez, Matt Carnie Orcid Logo, Matthew Davies Orcid Logo, Trystan Watson Orcid Logo, Katherine Hooper, Pete Davies

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DOI (Published version): 10.1002/adma.202208561

Abstract

Perovskite photovoltaics have shown great promise in device efficiency but also the promise of scalability through solution-processed manufacture. Efforts to scale perovskites have been taken through printable mesoporous scaffolds and slot die coating of flexible substrates roll-to-roll (R2R). Howev...

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Published in: Advanced Materials
ISSN: 0935-9648 1521-4095
Published: Wiley 2023
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa62299
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Abstract: Perovskite photovoltaics have shown great promise in device efficiency but also the promise of scalability through solution-processed manufacture. Efforts to scale perovskites have been taken through printable mesoporous scaffolds and slot die coating of flexible substrates roll-to-roll (R2R). However, to date there has been no demonstration of entirely R2R-coated devices due to the lack of a compatible solution-processable back electrode; instead, high-value evaporated metal contacts are employed as a post process. Here, in this study, the combination of a low-temperature device structure and R2R-compatible solution formulations is employed to make a fully R2R printable device architecture overcoming interlayer incompatibilities and recombination losses. Therefore, the n–i–p device structure of SnO2/perovskite/poly(3,4-ethylenedioxythiophene)/carbon is employed to form an ohmic contact between a p-type semiconductor and printable carbon electrode. In particular, the results show that the small-scale device efficiencies of 13–14% are achieved, matching the device performance of evaporated gold electrodes. Also, this entirely R2R-coated perovskite prototype represents a game changer, reaching over 10% (10.8) stabilized power conversion efficiency with unencapsulated long-term stability retaining 84% of its original efficiency over 1000 h under 70% RH and 25 °C.
Keywords: Carbon electrodes, perovskite, roll-to-roll, scale-up, slot die
College: Faculty of Science and Engineering
Funders: Engineering and Physical Sciences Research Council (GrantNumber(s): EP/N020863/1; EP/T028513/1; EP/M028267/1); Innovate UK (GrantNumber(s): 920036), European Regional Development Fund (GrantNumber(s): c80892), Llywodraeth Cymru, Swansea University.
Issue: 16
Start Page: 2208561