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From dense blocking layers to different templated films in dye sensitized and perovskite solar cells: toward light transmittance management and efficiency enhancement

Abstract

In this study, it has been tried to demonstrate the implications of employing nonsimilar mesoporous TiO2 templated films as interfacial blocking layers for improving the input light transmittance and photovoltaic performance of dye sensitized and perovskite solar cells. In fact, the interfacial layers were synthesized using four types of copolymers including PSA, Brij58, P123 and F127 and their impact was examined and compared with traditional dense blocking layers on performance of dye sensitized and Perovskite solar cells. For the first time, we used block copolymers as a structure-directing agent in interfacial templated blocking films aiming at increasing input light transmittance and efficiency of dye sensitized and perovskite solar cells. Moreover, two types of FTO substrates, 15 Ω/sq bearing high light transmission and low conductivity and 7Ω/sq with low transmittance and high conductivity, were used in order to replace FTO glasses with higher conductivity instead of 15 Ω/sq glasses commonly used. Our results showed that, through replacing the blocking layer templated by P123 copolymer with dense film, the short circuit density significantly improved from 15.89 to 21.23 mA cm-2 for dye sensitized solar cell and from 18.72 to 24.09 mA cm-2 for perovskite solar cell due to striking increase in light transmittance. Also, introduction of the P123 templated interfacial layer presents conversion efficiency enhancement by 33% and 16% in dye sensitized solar cell and perovskite solar cell, respectively.

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Publication details

The article was received on 22 Oct 2017, accepted on 08 Jan 2018 and first published on 08 Jan 2018


Article type: Paper
DOI: 10.1039/C7TA09304G
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    From dense blocking layers to different templated films in dye sensitized and perovskite solar cells: toward light transmittance management and efficiency enhancement

    M. Amini, R. kehavarzi, V. Mirkhani, M. Moghadam, S. Tangestaninejad, I. Mohammadpoor-Baltork and F. Sadegh, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C7TA09304G

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