Modeling and Comparative Performance Analysis of Perovskite Solar Cells with Planar or Nanorod Sn O2 Electron-Transport Layers
Akhanuly A. Dossyaev I.T. Shalenov E.O. Valagiannopoulos C. Dzhumagulova K.N. Ng A. Jumabekov A.N.
April 2023American Physical Society
Physical Review Applied
2023#19Issue 5
Application of various electron-transport layers (ETLs) with desired morphology and dimensions is a key factor to be considered for the structural designs of perovskite solar cells (PSCs) in order to obtain enhanced optical and electrical properties. The metal-oxide ETLs composed of one-dimensional nanorod arrays are one of the most frequently used nanostructures for electron transporting in PSCs. In this work, computer-simulation methods are employed to investigate the optoelectrical properties of PSCs with planar and nanorod-based SnO2 ETLs. A two-dimensional optical model is used to determine the optical responses of devices and the standard drift-diffusion model is utilized to simulate their behavior and performance. The aspect ratio and the density of SnO2 nanorods are varied to examine their effect on the optical and the electrical properties of resulting devices and the findings are contrasted with those of planar devices. It is found that under optimum conditions, PSCs with thin planar SnO2 ETLs, which are referred to as reference planar devices, outperform PSCs with nanorod-based SnO2 ETLs even if the light-harvesting properties of the latter are improved with the implementation of structured ETLs. The underlying reasons for this phenomenon are analyzed and rationalized through a detailed analysis and comparison of electric field, current density, and carrier recombination distributions in PSCs. The findings of this work can be used as a theoretical guide for designing and fabrication of high-performance planar and structured PSCs using SnO2 ETLs.
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Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
Department of Mathematics, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan
Department of General Physics, Satbayev University, Almaty, 050013, Kazakhstan
Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan
Department of Physics
Department of Mathematics
Department of General Physics
Institute of Experimental and Theoretical Physics
Department of Electrical and Computer Engineering
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