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

Neda Irannejad, Narges Yaghoobi Nia, Siavash Adhami, Enrico Lamanna, Behzad Rezaei and Aldo Di Carlo
Additional contact information
Neda Irannejad: Chemistry Department, Isfahan University of Technology, Isfahan 84156-83111, Iran
Narges Yaghoobi Nia: Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, 00133 Rome, Italy
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

Energies, 2020, vol. 13, issue 8, 1-12

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.

Keywords: interface; CuSCN; bilayer; poly(3-hexylthiophene); stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/8/2059/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/8/2059/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:8:p:2059-:d:348088

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().