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Spray‐Cast Multilayer Organometal Perovskite Solar Cells Fabricated in Air
Author(s) -
Mohamad David K.,
Griffin Jonathon,
Bracher Christopher,
Barrows Alexander T.,
Lidzey David G.
Publication year - 2016
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.201600994
Subject(s) - materials science , perovskite (structure) , pedot:pss , layer (electronics) , energy conversion efficiency , coating , champion , casting , perovskite solar cell , spin coating , solar cell , optoelectronics , composite material , chemical engineering , nanotechnology , political science , law , engineering
Spray‐coating is a versatile coating technique that can be used to deposit functional films over large areas at speed. Here, spray‐coating is used to fabricate inverted perovskite solar cell devices in which all of the solution‐processible layers (PEDOT:PSS, perovskite, and PCBM) are deposited by ultrasonic spray‐casting in air. Using such techniques, all‐spray‐cast devices having a champion power conversion efficiency (PCE) of 9.9% are fabricated. Such performance compares favorably with reference devices spin‐cast under a nitrogen atmosphere that has a champion PCE of 12.8%. Losses in device efficiency are ascribed to lower surface coverage and reduced uniformity of the spray‐cast perovskite layer.