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Issue 35, 2016
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Room-temperature and solution-processed copper iodide as the hole transport layer for inverted planar perovskite solar cells

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Abstract

Inverted planar heterojunction perovskite solar cells with poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) sulfonic acid (PEDOT:PSS) as the hole transport layer (HTL) have attracted significant attention during recent years. However, these devices suffer from a serious stability issue due to the acidic and hygroscopic characteristics of PEDOT:PSS. In this work, we demonstrate a room-temperature and solution-processed CuI film which is used as the HTL for inverted perovskite solar cells. As a result, an impressive PCE of 16.8% is achieved by the device based on the CuI HTL. Moreover, the unsealed CuI-based device displays enhanced air stability compared to the PEDOT:PSS-based device. In addition, the fabrication of the CuI HTL is a simple and time-saving procedure without any post-treatment, thus making it a promising candidate as the HTL in inverted perovskite solar cells and a potential target for efficient flexible and tandem solar cells.

Graphical abstract: Room-temperature and solution-processed copper iodide as the hole transport layer for inverted planar perovskite solar cells

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Publication details

The article was received on 27 May 2016, accepted on 03 Aug 2016 and first published on 04 Aug 2016


Article type: Paper
DOI: 10.1039/C6NR04288K
Nanoscale, 2016,8, 15954-15960

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    Room-temperature and solution-processed copper iodide as the hole transport layer for inverted planar perovskite solar cells

    W. Sun, S. Ye, H. Rao, Y. Li, Z. Liu, L. Xiao, Z. Chen, Z. Bian and C. Huang, Nanoscale, 2016, 8, 15954
    DOI: 10.1039/C6NR04288K

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