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Issue 45, 2017
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Radical polymers as interfacial layers in inverted hybrid perovskite solar cells

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Abstract

We report high performance hybrid perovskite solar cells (PSCs) through the introduction of a radical polymer-based copolymer that contains a second moiety capable of undergoing crosslinking through simple exposure to ultraviolet (UV) light, poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate)-co-(4-benzoylphenyl methacrylate) (PTMA-BP). The PTMA-BP thin film engineered the surface of a poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) hole extraction layer (HEL). Systematic investigations indicate that PTMA-BP can induce better band alignment between PEDOT:PSS and perovskite hybrids, reduce interfacial charge carrier recombination, and improve the crystallization of perovskite hybrids that are cast on the top of the HEL. As a result, the stable PSCs incorporated with PTMA-BP exhibit a 15% power conversion efficiency, which is more than a 15% enhancement compared to cells that lacked the PTMA-BP interfacial modifying layer.

Graphical abstract: Radical polymers as interfacial layers in inverted hybrid perovskite solar cells

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Publication details

The article was received on 01 Sep 2017, accepted on 23 Oct 2017 and first published on 24 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA07732G
Citation: J. Mater. Chem. A, 2017,5, 23831-23839
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    Radical polymers as interfacial layers in inverted hybrid perovskite solar cells

    L. Zheng, S. Mukherjee, K. Wang, M. E. Hay, B. W. Boudouris and X. Gong, J. Mater. Chem. A, 2017, 5, 23831
    DOI: 10.1039/C7TA07732G

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