Open AccessExploring Spray-Coating Techniques for Organic Solar Cell Applications
Author(s) -
Wanyi Nie,
Robert C. Coffin,
Jiwen Liu,
Christopher M. MacNeill,
Yuan Li,
Ronald E. Noftle,
David Carroll
Publication year - 2012
Publication title -
international journal of photoenergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.426
H-Index - 51
eISSN - 1687-529X
pISSN - 1110-662X
DOI - 10.1155/2012/175610
Subject(s) - fabrication , organic solar cell , materials science , solar cell , energy conversion efficiency , coating , acceptor , chemical engineering , spray drying , solvent , polymer solar cell , nanotechnology , optoelectronics , chemistry , organic chemistry , composite material , polymer , medicine , alternative medicine , physics , pathology , condensed matter physics , engineering
We have investigated spray coating as a novel processing method for organic solar cell fabrication. In this work, spraying parameters and organic solvent influences have been correlated with cell performance. Using airbrush fabrication, bulk heterojunction photovoltaic devices based on a new low band gap donor material: poly[(4,8-bis(1-pentylhexyloxy)benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-2,1,3-benzoxadiazole-4,7-diyl] with the C60-derivative (6,6)-phenyl C61-butyric acid methyl ester (PCBM) as an acceptor, have achieved power conversion efficiencies over 3%. We show that airbrush fabrication can be carried out with simple solvents such as pristine 1,2-dichlorobenzene. Moreover, the influence of device active area has been studied and the 1 cm2 device by spray coating maintained an excellent power conversion efficiency of 3.02% on average
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