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Title: Polymer-based solar cells having an active area of 1.6 cm{sup 2} fabricated via spray coating

We demonstrate the fabrication of polymer solar cells in which both a PEDOT:PSS hole transport and a PCDTBT:PC{sub 71}BM photoactive layer are deposited by spray-casting. Two device geometries are explored, with devices having a pixel area of 165 mm{sup 2} attaining a power conversion efficiency of 3.7%. Surface metrology indicates that the PEDOT:PSS and PCDTBT:PC{sub 71}BM layers have a roughness of 2.57 nm and 1.18 nm over an area of 100 μm{sup 2}. Light beam induced current mapping reveals fluctuations in current generation efficiency over length-scales of ∼2 mm, with the average photocurrent being 75% of its maximum value.
Authors:
; ; ;  [1] ;  [1] ;  [2] ; ;  [3]
  1. Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH (United Kingdom)
  2. (China)
  3. Department of Chemistry, University of Sheffield, Sheffield S3 7HF (United Kingdom)
Publication Date:
OSTI Identifier:
22499227
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL Materials; Journal Volume: 3; Journal Issue: 12; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DEPOSITS; EFFICIENCY; POLYMERS; SOLAR CELLS; SPRAY COATING; SPRAYED COATINGS; SURFACES