Research Paper: Effect of Deposition Condition and Method on Physical Properties of MAPbI3 Layers for Perovskite Solar Cell Purpose

Document Type : Research Paper

Authors

1 Assistant Professor, Faculty of Physics, Semnan University, Semnan, Iran

2 M.Sc. in Physics, Faculty of Physics, Semnan University, Semnan, Iran.

Abstract

In recent years, solar cells with perovskite absorber have attracted considerable attention due to rapid increase in their efficiency. In this research, MAPbI3 layers were coated by a two-step method. Spin-spin and spin-dip methods were studied and physical properties of prepared layers were compared. Their optical and structural properties were investigated by UV-VIS, XRD and FE-SEM techniques. The results of structural analysis showed the formation of cubic phase for MAPbI3 perovskite. In addition, the surface morphology of the layers was determined by FE-SEM images, which confirmed the formation of a uniform and cohesive layer, without any cracks or discontinuities on the surface of layer. Results showed that the optical band gap of the samples are in the range of 1.54-1.59 eV. Furthermore, the effect of precursor concentration on the physical properties of MAPbI3 layers prepared by both methods (spin-spin and spin-dip) was also investigated. The results showed that in both methods, with increasing PbI2 concentration, thicker layers with higher adsorption can be prepared.

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References

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History

  • Receive Date: 29 December 2020
  • Revise Date: 30 January 2021
  • Accept Date: 04 April 2021

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