Issue 42, 2018

Semitransparent all-polymer solar cells through lamination

Abstract

In this work, we demonstrate all-polymer solar cells where all the layers are made from polymers. We use PEDOT:PSS as the semitransparent anode and polyethyleneimine modified PEDOT:PSS as the semi-transparent cathode, both of which are slot-die printed on polyethylene terephthalate (PET). Active layers are deposited on the cathode and anode surfaces by spin coating separately. These layers are then joined through a roll-to-roll compatible lamination process. This results in a semitransparent and flexible solar cell. We have used two polymer–polymer systems and several combinations, and the highest power conversion efficiency (PCE) obtained is 2.3% with a mean transparency > 35% within the visible light range. By laminating a thin layer acceptor polymer to a thick polymer–polymer blend, we can improve the performance by reducing recombination, compared to laminating blend to blend, which is verified by the trap-limited charge transport, CELIV and electroluminescence.

Graphical abstract: Semitransparent all-polymer solar cells through lamination

Supplementary files

Article information

Article type
Paper
Submitted
16 Aug 2018
Accepted
28 Sep 2018
First published
22 Oct 2018

J. Mater. Chem. A, 2018,6, 21186-21192

Semitransparent all-polymer solar cells through lamination

Y. Xia, X. Xu, L. E. Aguirre and O. Inganäs, J. Mater. Chem. A, 2018, 6, 21186 DOI: 10.1039/C8TA07992G

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