High-performance and economically viable La2NiMnO6-based carrier transport layer-free perovskite solar cell with carbon-contact feasibility: a SCAPS-1D analysis

Authors

  • Peverga Rex Jubu
    Africa Centre of Excellence in Future Energies and Electrochemical System (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
  • Akache Nathan-Abutu
    Department of Industrial Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
  • Francis Aungwa
    Department of Industrial Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
  • Chijioke Amakom
    Africa Centre of Excellence in Future Energies and Electrochemical System (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
  • Izuchukwu Kenneth Nwokolo
    Africa Centre of Excellence in Future Energies and Electrochemical System (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria
  • Aaron Opeyemi Aransiola
    Africa Centre of Excellence in Future Energies and Electrochemical System (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
  • Kufre I. Udofia
    Africa Centre of Excellence in Future Energies and Electrochemical System (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
  • John Ojinere Anyanwu
    Africa Centre of Excellence in Future Energies and Electrochemical System (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria
  • Dehiin Donald Hile
    Department of Industrial Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
    Department of Physics, University of Zululand, Kwadlangezwa 3886, South Africa
  • Madan Mohan Gururani
    Department of Physics, Moti Ram Babu Ram Government Post Graduate College, Haldwani, Uttarakhand, India
  • Dooshima Judith Mtsor
    Department of Industrial Physics, Joseph Sarwuan Tarka University Makurdi (Federal University of Agriculture Makurdi), P.M.B. 2373, Makurdi, Benue State, Nigeria
  • Emeka Emmanuel Oguzie
    Africa Centre of Excellence in Future Energies and Electrochemical System (ACE-FUELS), Federal University of Technology Owerri (FUTO), P.M.B. 1526 Owerri, Imo State, Nigeria
    Department of Chemistry, Federal University of Technology Owerri, Imo State, Nigeria

Keywords:

Perovskite solar cells, La2NiMnO6, Carrier transport layer-free, SCAPS-1D, Carbon contact.

Abstract

Carrier transport layers (CTLs) play a crucial role in conventional perovskite solar cells (PSCs) by aiding charge extraction. However, their involvement increases fabrication complexity, production cost, and potential instability. In this work, a simplified and economically viable CTL-free PSC configuration of  FTO/La2NiMnO6/Au is proposed and systematically investigated using SCAPS-1D numerical simulation. Lanthanum nickel manganese oxide (La2NiMnO6) perovskite, an ambipolar absorber, is demonstrated to effectively perform both light absorption and charge transport without the need for auxiliary transport materials. Through systematic optimization of absorber thickness, defect density, electron capture cross-section, and resistive losses, a high power conversion efficiency (PCE) of 30.58% is recorded under standard illumination conditions, significantly outperforming previously reported single-absorber La2NiMnO6-based devices. The optimized device demonstrates strong defect tolerance, excellent carrier mobility balance, and robust thermal stability. Moreover, replacing the Au back contact with carbon (FTO/La2NiMnO6/C) yields a comparable PCE of 30.34%, confirming the potential for low-cost and scalable device fabrication. These results highlight the feasibility of eliminating CTLs in appropriately engineered devices and establish La2NiMnO6 as a promising material for next-generation, structure-simplified, and high-efficiency photovoltaic technologies.

Dimensions

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fig 4

Published

2026-07-15

How to Cite

High-performance and economically viable La2NiMnO6-based carrier transport layer-free perovskite solar cell with carbon-contact feasibility: a SCAPS-1D analysis. (2026). African Scientific Reports, 5(2), 536. https://doi.org/10.46481/asr.2026.5.2.536

Issue

Volume 5, Issue 2, August 2026

Section

PHYSICS SECTION
Copyright & Licensing

Copyright (c) 2026 Peverga Rex Jubu, Akache Nathan-Abutu, Francis Aungwa, Chijioke Amakom, Izuchukwu Kenneth Nwokolo, Aaron Opeyemi Aransiola, Kufre I. Udofia, John Ojinere Anyanwu, Dehiin Donald Hile, Madan Mohan Gururani, Dooshima Judith Mtsor, Emeka Emmanuel Oguzie

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

High-performance and economically viable La2NiMnO6-based carrier transport layer-free perovskite solar cell with carbon-contact feasibility: a SCAPS-1D analysis. (2026). African Scientific Reports, 5(2), 536. https://doi.org/10.46481/asr.2026.5.2.536

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