Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. Founded at 2009

Effect of defect concentration in perovskite and heterojunctions on photovoltaic characteristics of a solar

A.Z. Agoev1, A.M. Karmokov1, E.N. Kozyrev2, O.A. Molokanov1, R.Yu.. Karmokova1

1 Kabardino-Balkarian State University named after Kh.M. Berbekov
2 North Caucasus Mining and Metallurgical Institute (State Technological University)

DOI: 10.26456/pcascnn/2025.17.537

Original article

Abstract: Increasing the stability and reliability of perovskite solar-to-electric energy converters is one of important issues in the field of green energy. In this regard, a new model of the solar cell structure is proposed that is capable of stabilizing photoelectric characteristics at a level approaching the theoretical limit for a single-layer perovskite. The influence of defect concentration on the characteristics of solar energy conversion into electrical energy in perovskite solar cells in the ITO/ZnO/CH3NH3PbI3/NiO/Ag structure model is considered. Numerical calculations performed show a significant dependence of the solar cell characteristics on the defect density at the layer boundaries and in the perovskite absorber itself. The dependences of the photoelectric efficiency characteristics of the solar cell on the defect density at the oxide heterojunctions with the absorber and the absorber itself are established. In the studied structure, the limit values of defect concentration were established, below which the maximum values of open-circuit voltage, short-circuit current density, photoelectric efficiency, and efficiency are achieved. The concentration of defects at the CH3NH3PbI3/NiO interphase boundary has virtually no effect on their values. A volt-ampere characteristic has been constructed for the proposed model and optimal photoelectric characteristics have been calculated.

Keywords: efficiency factor, perovskite, solar cell, zinc oxide, nickel oxide, defects, interface

  • Artur Z. Agoev – engineer of the scientific and technological center of microelectronics and nanotechnology, Kabardino-Balkarian State University named after Kh.M. Berbekov
  • Akhmed M. Karmokov – Dr. Sc., Professor, Department of Electronics and Digital Information Technologies, Kabardino-Balkarian State University named after Kh.M. Berbekov
  • Evgeny N. Kozyrev – Dr. Sc., Professor, Head of the Department of Electronic Devices, North Caucasus Mining and Metallurgical Institute (State Technological University)
  • Oleg A. Molokanov – Ph. D. Docent, Department of Electronics and Digital Information Technologies, Kabardino-Balkarian State University named after Kh.M. Berbekov
  • Rita Yu.. Karmokova – Ph. D., Docent, Department of Electronics and Digital Information Technologies, Kabardino-Balkarian State University named after Kh.M. Berbekov

For citation:

Agoev A.Z., Karmokov A.M., Kozyrev E.N., Molokanov O.A., Karmokova R.Yu.. Vliyanie kontsentratsii defektov v perovskite i geteroperekhodakh na fotoelektricheskie kharakteristiki solnechnogo elementa [Effect of defect concentration in perovskite and heterojunctions on photovoltaic characteristics of a solar], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2025, issue 17, pp. 537-543. DOI: 10.26456/pcascnn/2025.17.537. ⎘

Full article (in Russian): download PDF file

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