Room-temperature and solution-processed copper iodide as the hole transport layer for inverted planar perovskite solar cells
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...
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Veröffentlicht in: | Nanoscale 2016-09, Vol.8 (35), p.15954-1596 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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.
The inverted perovskite solar cells based on CuI hole transport layer exhibited a maximum PCE of 16.8% and an impressive air stability. |
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ISSN: | 2040-3364 2040-3372 |
DOI: | 10.1039/c6nr04288k |