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Fabrication of P3HT/PCBM inverted solar cells with ZnO electron transport layer

Authors:

R. M. G. Wanigasekara,

University of Kelaniya, Kelaniya 11600, LK
About R. M. G.
Department of Physics and Electronics
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D. G. K. K. Namawardana,

University of Kelaniya, Kelaniya 11600, LK
About D. G. K. K.
Department of Physics and Electronics
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W. T. M. A. P. K. Wanninayake,

University of Kelaniya, Kelaniya 11600, LK
About W. T. M. A. P. K.
Department of Physics and Electronics
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K. M. D. C. Jayathilaka,

University of Kelaniya, Kelaniya 11600, LK
About K. M. D. C.
Department of Physics and Electronics
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R. P. Wijesundera ,

University of Kelaniya, Kelaniya 11600, LK
About R. P.
Department of Physics and Electronics
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W Siripala

University of Kelaniya, Kelaniya 11600, LK
About W
Department of Physics and Electronics
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Abstract

Organic solar cells (OSCs) have gained much popularity among researchers as possible candidate for fulfilment of future energy requirements. Poly(3-hexylthiophene) (P3HT): Phenyl-C61-Butyric Acid Methyl Ester (PC61BM) based bulk heterojunction OSC is one of the most popular types. In this study, inverted P3HT:PCBM OSCs were fabricated on Stainless Steel (SS) substrate with and without ZnO layer in between the SS and active material. In fabrication of the device, ZnO and P3HT:PCBM layers were deposited using spin coating technique while poly-(4,3-ethylene dioxythiophene) (PEDOT): poly(styrenesulfonate) (PSS) layer was deposited using doctor blade method. Finally, gold (Au) front contact was sputter coated. In comparison with the best SS/P3HT:PCBM/PEDOT:PSS/Au device, we could fabricate a SS/ZnO/P3HT:PCBM/PEDOT:PSS/Au device with a 280% increase in power conversion efficiency (PCE). This PCE enhancement is due to the improvement of short wavelength response with the introduction of ZnO to the device.
How to Cite: Wanigasekara, R.M.G., Namawardana, D.G.K.K., Wanninayake, W.T.M.A.P.K., Jayathilaka, K.M.D.C., Wijesundera, R.P. and Siripala, W., 2021. Fabrication of P3HT/PCBM inverted solar cells with ZnO electron transport layer. Sri Lankan Journal of Physics, 22(1), pp.40–49. DOI: http://doi.org/10.4038/sljp.v22i1.8092
Published on 09 Jul 2021.
Peer Reviewed

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