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Issue 42, 2018
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Semitransparent all-polymer solar cells through lamination

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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

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Publication details

The article was received on 16 Aug 2018, accepted on 28 Sep 2018 and first published on 22 Oct 2018

Article type: Paper
DOI: 10.1039/C8TA07992G
J. Mater. Chem. A, 2018,6, 21186-21192

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    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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