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Ultrathin Plasma Polymer Passivation of Perovskite Solar Cells for Improved Stability and Reproducibility
Author(s) -
ObreroPerez Jose M.,
ContrerasBernal Lidia,
NuñezGalvez Fernando,
CastilloSeoane Javier,
ValadezVillalobos Karen,
Aparicio Francisco J.,
Anta Juan A.,
Borras Ana,
SanchezValencia Juan R.,
Barranco Angel
Publication year - 2022
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202200812
Subject(s) - passivation , materials science , perovskite (structure) , mesoporous material , nanotechnology , reproducibility , hybrid solar cell , photovoltaic system , polymer , halide , optoelectronics , solar cell , layer (electronics) , chemical engineering , polymer solar cell , inorganic chemistry , composite material , chemistry , electrical engineering , biochemistry , chromatography , engineering , catalysis
Despite the youthfulness of hybrid halide perovskite solar cells, their efficiencies are currently comparable to commercial silicon and have surpassed quantum‐dots solar cells. Yet, the scalability of these devices is a challenge due to their low reproducibility and stability under environmental conditions. However, the techniques reported to date to tackle such issues recurrently involve the use of solvent methods that would further complicate their transfer to industry. Herein a reliable alternative relaying in the implementation of an ultrathin plasma polymer as a passivation interface between the electron transport layer and the hybrid perovskite layer is presented. Such a nanoengineered interface provides solar devices with increased long‐term stability under ambient conditions. Thus, without involving any additional encapsulation step, the cells retain more than 80% of their efficiency after being exposed to the ambient atmosphere for more than 1000 h. Moreover, this plasma polymer passivation strategy significantly improves the coverage of the mesoporous scaffold by the perovskite layer, providing the solar cells with enhanced performance, with a champion efficiency of 19.2%, a remarkable value for Li‐free standard mesoporous n‐i‐p architectures, as well as significantly improved reproducibility.