In:
Energy Technology, Wiley, Vol. 9, No. 11 ( 2021-11)
Abstract:
Strong acid treatment is regarded as the most effective approach to increase the electrical conductivity of poly(3,4‐ethylenedioxythiophene):poly(4‐styrenesulfonate) (PEDOT:PSS) electrodes. However, the conventional soaking treatments of strong acids have drawbacks, including limited flexibility of PEDOT:PSS electrodes coated on thermoplastic underlying substrates, high preparation cost with large acid consumption, and moderate stability of flexible organic solar cells (OSCs). Herein, a unique and cost‐effective fumigation treatment using trifluoromethanesulfonic acid (CF 3 SO 3 H) vapors is proposed. The CF 3 SO 3 H fumigation treatment leads to a highly conductive, smooth, homogeneous, and flexible PEDOT:PSS electrode. On the basis of the CF 3 SO 3 H‐fumigated PEDOT:PSS electrodes, the inverted flexible OSCs yield a high power conversion efficiency (PCE) of 13.62%. Moreover, the flexible solar cells maintain most (≈91%) of the initial efficiency in long‐term storage. This work provides a novel route to make solution‐processed flexible OSCs simultaneously have a high PCE and good storage stability.
Type of Medium:
Online Resource
ISSN:
2194-4288
,
2194-4296
DOI:
10.1002/ente.202100595
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2700412-0
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