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Effect of co‐solvents on the photovoltaic performance of an inverted organic solar cell
Author(s) -
Nair Sarita S.,
Kumar D.,
Majumdar Amitava
Publication year - 2015
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24080
Subject(s) - materials science , crystallinity , photocurrent , cyclohexanone , crystallite , chemical engineering , photovoltaic system , energy conversion efficiency , organic solar cell , active layer , phase (matter) , chlorobenzene , solar cell , polymer , polymer solar cell , solvent , polymer chemistry , layer (electronics) , organic chemistry , composite material , optoelectronics , chemistry , catalysis , ecology , thin film transistor , engineering , metallurgy , biology
We investigated the effect of varying polymer crystallinity, morphology, and optical property, produced by adding four different co‐solvents in to the poly(3‐hexylthiophene) (P3HT): [6,6]‐phenyl C 61 ‐butyric acid methyl ester (PCBM) active layer blend solution, on the functioning of an inverted polymeric solar device. Photovoltaic devices primed with cyclohexanone co‐solvent showed the best performance with power conversion efficiency (PCE) reaching a value of 3.01 ± 0.04%. Improvement in efficiency is related to an increase in photocurrent which is due to a combined result of ordered P3HT crystallite growth, as well as of the precise size and phase separation of domains. POLYM. ENG. SCI., 55:1382–1388, 2015. © 2015 Society of Plastics Engineers