Title: Large-area organic solar cells by accelerated blade coating
Authors: Tsai, Pei-Ting
Yu, Kai-Chieh
Chang, Chia-Ju
Horng, Sheng-Fu
Meng, Hsin-Fei
Institute of Physics
Keywords: Large-area;Organic solar cells;Acceleration;Blade coating
Issue Date: 1-Jul-2015
Abstract: Large-area photovoltaic devices have been fabricated using the blade coating technique. In this study, the use of accelerated blade motion in this technique significantly improved the thickness uniformity of blade-coated layers of polymer solar cells on an A4 glass substrate. Two types of active layers, P3HT: PC61BM and POD2T-DTBT: PC71BM, were studied. For the P3HT: PC61BM film, a thickness of 221 +/- 14 nm was realised in a 12 x 15 cm(2) active region with a coating blade acceleration of 8 mm/s(2). For the POD2T-DTBT: PC71BM film, a thickness of 98 +/- 6 nm was realised with a coating blade acceleration of 10 mm/s(2). Ten cells, each measuring 0.9 cm x 12 cm and monolithically fabricated, were connected in series, yielding a total active area of 108 cm(2). The power conversion efficiency of the resulting 10-cell module was 2.66% and 3.64% for P3HT: PC61BM and POD2T-DTBT: PC71BM, respectively. The blade coating technique involving the accelerated blade motion is therefore useful for fabricating low-cost large-area organic solar cells, and it may be a promising alternative for the commercialisation of organic solar cells. (C) 2015 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.orgel.2015.03.001
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2015.03.001
Volume: 22
Begin Page: 166
End Page: 172
Appears in Collections:Articles