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Open AccessArticle

Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells

1
Chemistry Department, Isfahan University of Technology, Isfahan 84156-83111, Iran
2
Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, 00133 Rome, Italy
3
Materials Engineering Department, Isfahan University of Technology, Isfahan 84156-83111, Iran
4
L.A.S.E.–Laboratory for Advanced Solar Energy, National University of Science and Technology ‘‘MISiS’’, Leninskiy prospect 6, 119049 Moscow, Russia
*
Authors to whom correspondence should be addressed.
The authors contributed equally to this work.
Energies 2020, 13(8), 2059; https://doi.org/10.3390/en13082059
Received: 8 March 2020 / Revised: 10 April 2020 / Accepted: 14 April 2020 / Published: 20 April 2020
(This article belongs to the Special Issue Progress in Inorganic Halide Perovskites)
In the search for improvements in perovskite solar cells (PSCs), several different aspects are currently being addressed, including an increase in the stability and a reduction in the hysteresis. Both are mainly achieved by improving the cell structure, employing new materials or novel cell arrangements. We introduce a hysteresis-free low-temperature planar PSC, composed of a poly(3-hexylthiophene) (P3HT)/CuSCN bilayer as a hole transport layer (HTL) and a mixed cation perovskite absorber. Proper adjustment of the precursor concentration and thickness of the HTL led to a homogeneous and dense HTL on the perovskite layer. This strategy not only eliminated the hysteresis of the photocurrent, but also permitted power conversion efficiencies exceeding 15.3%. The P3HT/CuSCN bilayer strategy markedly improved the life span and stability of the non-encapsulated PSCs under atmospheric conditions and accelerated thermal stress. The device retained more than 80% of its initial efficiency after 100 h (60% after 500 h) of continuous thermal stress under ambient conditions. The performance and durability of the PSCs employing a polymer/inorganic bilayer as the HTL are improved mainly due to restraining perovskite ions, metals, and halides migration, emphasizing the pivotal role that can be played by the interface in the perovskite-additive hole transport materials (HTM) stack. View Full-Text
Keywords: interface; CuSCN; bilayer; poly(3-hexylthiophene); stability interface; CuSCN; bilayer; poly(3-hexylthiophene); stability
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MDPI and ACS Style

Irannejad, N.; Yaghoobi Nia, N.; Adhami, S.; Lamanna, E.; Rezaei, B.; Di Carlo, A. Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells. Energies 2020, 13, 2059. https://doi.org/10.3390/en13082059

AMA Style

Irannejad N, Yaghoobi Nia N, Adhami S, Lamanna E, Rezaei B, Di Carlo A. Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells. Energies. 2020; 13(8):2059. https://doi.org/10.3390/en13082059

Chicago/Turabian Style

Irannejad, Neda; Yaghoobi Nia, Narges; Adhami, Siavash; Lamanna, Enrico; Rezaei, Behzad; Di Carlo, Aldo. 2020. "Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells" Energies 13, no. 8: 2059. https://doi.org/10.3390/en13082059

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