Numerical simulation of Cs2TiBr6-based all-inorganic photovoltaic perovskite solar cell employing SCAPS-1D software

P. R. Jubu; A. D. Otor; A. N. Abutu; A. O. Aransiola; C. Amakom; K. I. Udofia; I. K. Nwokolo; A. A. Goje; I. I. Ayogu; M. M. Gururani; E. E. Oguzie

doi:10.46481/jnsps.2023.3366

Authors

P. R. Jubu
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Department of Industrial Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
A. D. Otor
Department of Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
A. N. Abutu
Department of Industrial Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
A. O. Aransiola
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Department of Electronic and Electrical Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
C. Amakom
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Department of Physics, Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria
K. I. Udofia
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Department of Physics, Akwa Ibom State University, Akwa Ibom State, Nigeria
I. K. Nwokolo
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria
A. A. Goje
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Department of Applied Physics, Federal Polytechnic Damaturu, Nigeria
I. I. Ayogu
Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria
M. M. Gururani
Department of Physics, M.B. Government P.G. College, Haldwani, Uttarakhand, India
E. E. Oguzie
[email protected]

Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Department of Chemistry, Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria

Keywords:

Cs2TiBr6 perovskite, ETL-free perovskite solar cell, SCAPS-1D, CZTSe, Power conversion efficiency

Abstract

Lead halide perovskite solar cells (PSCs) show considerable promise, but their inherent drawbacks, including low stability and toxicity, pose environmental concerns. Therefore, exploring lead-free perovskite materials as potential alternative absorber layers is imperative. This work investigates a Cs₂TiBr₆/CZTSe photoactive heterostructure in which Cs₂TiBr₆ serves as the primary wide-bandgap absorber while CZTSe provides additional near-infrared absorption and hole transport. Numerical simulation is an effective way to identify suitable materials and device architectures for efficient photovoltaic systems, and it reduces fabrication costs and material wastage arising from extensive experimental trials. The SCAPS-1D software was employed to propose the FTO/CeO_x/Cs₂TiBr₆/CZTSe/CuO/Pt electron transport layer-assisted (ETL-assisted) PSC, which delivered a high power conversion efficiency (PCE) of 27.12% after optimization of structural parameters. Results show an increase in PCE from 27.12% to 36.10% with increasing sunlight concentration from 1 to 50 suns. Comparatively, the optimized ETL-free counterpart design, FTO/Cs₂TiBr₆/CZTSe/CuO/Pt, yielded a comparable and slightly higher PCE of 27.14%. This ETL-free design represents a first attempt for the Cs₂TiBr₆-based perovskite absorber and provides a strategy for reducing fabrication cost and device complexity associated with multistack configurations.

Dimensions

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