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

Author

Listed:
  • Neda Irannejad

    (Chemistry Department, Isfahan University of Technology, Isfahan 84156-83111, Iran
    The authors contributed equally to this work.)

  • Narges Yaghoobi Nia

    (Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, 00133 Rome, Italy
    The authors contributed equally to this work.)

  • Siavash Adhami

    (Materials Engineering Department, Isfahan University of Technology, Isfahan 84156-83111, Iran)

  • Enrico Lamanna

    (Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, 00133 Rome, Italy)

  • Behzad Rezaei

    (Chemistry Department, Isfahan University of Technology, Isfahan 84156-83111, Iran)

  • Aldo Di Carlo

    (Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, 00133 Rome, Italy
    L.A.S.E.–Laboratory for Advanced Solar Energy, National University of Science and Technology ‘‘MISiS’’, Leninskiy prospect 6, 119049 Moscow, Russia)

Abstract

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.

Suggested Citation

  • Neda Irannejad & Narges Yaghoobi Nia & Siavash Adhami & Enrico Lamanna & Behzad Rezaei & Aldo Di Carlo, 2020. "Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells," Energies, MDPI, vol. 13(8), pages 1-12, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:8:p:2059-:d:348088
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    References listed on IDEAS

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    1. Qi Jiang & Liuqi Zhang & Haolin Wang & Xiaolei Yang & Junhua Meng & Heng Liu & Zhigang Yin & Jinliang Wu & Xingwang Zhang & Jingbi You, 2017. "Enhanced electron extraction using SnO2 for high-efficiency planar-structure HC(NH2)2PbI3-based perovskite solar cells," Nature Energy, Nature, vol. 2(1), pages 1-7, January.
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