Achieving Well-Oriented FAPbI3 Perovskite Photovoltaics by Cyclohexane Modification

Davoud Dastan; Mustafa K A Mohammed; Raad Sh Alnayli; Sadeer M Majeed; Duha S Ahmed; Ali K Al-Mousoi; Rahul Pandey; M Khalid Hossain; Sagar Bhattarai; Bandar Ali Al-Asbahi; Md Ferdous Rahman

doi:10.1021/acs.langmuir.4c00136

Achieving Well-Oriented FAPbI₃ Perovskite Photovoltaics by Cyclohexane Modification

Langmuir. 2024 Apr 9;40(14):7560-7568. doi: 10.1021/acs.langmuir.4c00136. Epub 2024 Mar 29.

Authors

Affiliations

¹ Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14850, United States.
² College of Engineering, University of Warith Al-Anbiyaa, Karbala 56001, Iraq.
³ Radiological Techniques Department, College of Health and Medical Techniques, Al-Mustaqbal University, Hillah 51001, Iraq.
⁴ Department of Applied Sciences, University of Technology-Iraq, Baghdad 10011, Iraq.
⁵ Electrical Engineering Department, College of Engineering, Al-Iraqia University, Baghdad 10011, Iraq.
⁶ VLSI Centre of Excellence, Chitkara University Institute of Engineering and Technology, Chitkara University, Rajpura, Punjab 140401, India.
⁷ Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Dhaka 1349, Bangladesh.
⁸ Technology Innovation and Development Foundation, Indian Institute of Technology Guwahati, Guwahati, Assam 792103, India.
⁹ Department of Physics & Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
¹⁰ Advanced Energy Materials and Solar Cell Research Laboratory, Department of Electrical and Electronic Engineering, Begum Rokeya University, Rangpur 5400, Bangladesh.

PMID: 38553424
DOI: 10.1021/acs.langmuir.4c00136

Abstract

It is essential and challenging to develop green and cost-effective solar cells to meet the energy demands. Solar cells with a perovskite light-harvesting layer are the most promising technology to propel the world toward next-generation solar energy. Formamidinium lead tri-iodide (FAPbI₃)-based perovskite solar cells (F-PSCs), with their considerable performance, offer cost-effective solar cells. One of the major issues that the PSC community is now experiencing is the stability of α-FAPbI₃ at relatively low temperatures. In this study, we fabricated FAPbI₃-PSCs using cyclohexane (CHX) material via a two-step deposition method. For this purpose, CHX is added to the formamidinium iodide:methylammonium chloride (FAI:MACl) solution as an additive and used to form a better FAPbI₃ layer by controlling the reaction between FAI and lead iodide (PbI₂). The CHX additive induces the reaction of undercoordinated Pb²⁺ with FAI material and produces an α-FAPbI₃ layer with low charge traps and large domains. In addition, the CHX-containing FAPbI₃ layers show higher carrier lifetimes and facilitate carrier transfer in F-PSCs. The CHX-modified F-PSCs yield a high champion efficiency of 22.84% with improved ambient and thermal stability behavior. This breakthrough provides valuable findings regarding the formation of a desirable FAPbI₃ layer for photovoltaic applications and holds promise for the industrialization of F-PSCs.