Effect of rubrene:P3HT bilayer on photovoltaic performance of perovskite solar 
cells with electrodeposited ZnO nanorods

Pelicano, Christian Mark; Yanagi, H.

doi:10.1016/j.jechem.2017.11.018

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Effect of rubrene:P3HT bilayer on photovoltaic performance of perovskite solar cells with electrodeposited ZnO nanorods

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Pelicano, C. M., & Yanagi, H. (2018). Effect of rubrene:P3HT bilayer on photovoltaic performance of perovskite solar cells with electrodeposited ZnO nanorods. Journal of Energy Chemistry, 27(2), 455-462. doi:10.1016/j.jechem.2017.11.018.

Cite as: https://hdl.handle.net/21.11116/0000-0010-0F7A-6

Abstract

Improved photovoltaic performance of perovskite solar cells is demonstrated through the synergistic effect of electrodeposited ZnO nanorods and rubrene:P3HT bilayer as electron and hole-transporting layers, respectively. Highly crystalline ZnO nanorods were obtained by electrochemical deposition in a chloride medium. Additionally, rubrene interlayer was able to passivate or cover the grain boundaries of perovskite film effectively that led to reduced leakage current. A perovskite solar cell optimized with ZnO nanorods and rubrene:P3HT bilayer achieved a maximum efficiency of 4.9% showing reduced hysteresis behavior compared with the device having P3HT as the only hole-transporting layer. The application of longer nanorods led to better perovskite infiltration and shorter charge carrier path length. These results highlight the potential of electrodeposited ZnO nanorods and rubrene:P3HT bilayer as charge selective layers for efficient perovskite solar cells. © 2017 Science Press