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Issue 48, 2018
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Highly-efficient and low-temperature perovskite solar cells by employing a Bi-hole transport layer consisting of vanadium oxide and copper phthalocyanine

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Abstract

In this article, an inorganic–organic bilayer hole transport layer (B-HTL) is designed and utilized in planar perovskite solar cells. Here the B-HTL consists of an inorganic VOx matrix and a copper phthalocyanine (CuPc) buffer layer, providing excellent resistance to moisture as well as the alignment of the interfacial energy level. Benefiting from this typical HTL, an enlarged built-in potential and charge extraction can be achieved in PSCs simultaneously. Correspondingly, a champion device with a B-HTL shows a 16.85% efficiency with negligible hysteresis, which is superior to that of a PSC based on a PEDOT:PSS HTL. Meanwhile, significantly prolonged stability of the PSC with the B-HTL can be observed, exhibiting only a 10% efficiency loss after 350 hours in ambient air. Moreover, such an entirely low-temperature (≤60 °C) fabrication process of this typical PSC exhibits its successful application in flexible devices.

Graphical abstract: Highly-efficient and low-temperature perovskite solar cells by employing a Bi-hole transport layer consisting of vanadium oxide and copper phthalocyanine

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Publication details

The article was received on 07 May 2018, accepted on 22 May 2018 and first published on 28 May 2018


Article type: Communication
DOI: 10.1039/C8CC03672A
Citation: Chem. Commun., 2018,54, 6177-6180
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    Highly-efficient and low-temperature perovskite solar cells by employing a Bi-hole transport layer consisting of vanadium oxide and copper phthalocyanine

    T. Lei, H. Dong, J. Xi, Y. Niu, J. Xu, F. Yuan, B. Jiao, W. Zhang, X. Hou and Z. Wu, Chem. Commun., 2018, 54, 6177
    DOI: 10.1039/C8CC03672A

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