Title
Investigation of non-halogenated solvent mixtures for high throughput fabrication of polymerfullerene solar cells
Author
Schmidt-Hansberg, B.
Sanyal, M.
Grossiord, N.
Galagan, Y.O.
Baunach, M.
Klein, M.F.G.
Colsmann, A.
Scharfer, P.
Lemmer, U.
Dosch, H.
Michels, J.J.
Barrena, E.
Schabel, W.
Publication year
2012
Abstract
The rapidly increasing power conversion efficiencies of organic solar cells are an important prerequisite towards low cost photovoltaic fabricated in high throughput. In this work we suggest indane as a non-halogenated replacement for the commonly used halogenated solvent o-dichlorobenzene. Indane was blended with the higher volatile solvents chloroform or toluene or o-xylene in order to improve wettability and to reduce drying time. The combination of high volatile solvents with the less volatile host solvent indane allows for an increased fabrication speed due to a reduction of the overall drying time and provides films with good light absorption behavior and high polymer crystallinity. For the solvent mixture tolueneindane, solar cell performance is comparable to the o-dichlorobenzene reference device indicating this mixture as a suitable replacement for increased productivity without drawbacks in nanomorphology as investigated by atomic force microscopy (AFM) and grazing incidence X-ray diffraction (GIXD). This study provides a fundamental understanding on solvent mixture drying kinetics and can aid the ink formulation. © 2011 Elsevier B.V. All rights reserved.
Subject
Mechatronics, Mechanics & Materials
HOL - Holst
TS - Technical Sciences
Electronics
Industrial Innovation
Drying process
Grazing incidence X-ray diffraction (GIXD)
Knife coating
Morphology
Organic photovoltaic
P3HT:PCBM
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http://resolver.tudelft.nl/uuid:7eaad71c-fa48-4b8c-8855-c1439c826990
TNO identifier
442923
ISSN
0927-0248
Source
Solar Energy Materials and Solar Cells, 96 (1), 195-201
Document type
article