• 1 Department of Electrical and Electronic Engineering, Southeast University, Dhaka 1207, Bangladesh
  • 2 Solar Energy Research Institute, The National University of Malaysia, Bangi 43600, Malaysia
  • 3 Institute of Sustainable Energy, Universiti Tenaga Nasional (@The National Energy University), Kajang 43000, Selangor, Malaysia
  • 4 Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
  • 5 Department of Computer Engineering, College of Computer and Information Sciences, King Saud University, Riyadh 11461, Saudi Arabia
  • 6 Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
Nanomaterials (Basel), 2021 May 05;11(5).
PMID: 34063020 DOI: 10.3390/nano11051218


Recent achievements, based on lead (Pb) halide perovskites, have prompted comprehensive research on low-cost photovoltaics, in order to avoid the major challenges that arise in this respect: Stability and toxicity. In this study, device modelling of lead (Pb)-free perovskite solar cells has been carried out considering methyl ammonium tin bromide (CH3NH3SnBr3) as perovskite absorber layer. The perovskite structure has been justified theoretically by Goldschmidt tolerance factor and the octahedral factor. Numerical modelling tools were used to investigate the effects of amphoteric defect and interface defect states on the photovoltaic parameters of CH3NH3SnBr3-based perovskite solar cell. The study identifies the density of defect tolerance in the absorber layer, and that both the interfaces are 1015 cm-3, and 1014 cm-3, respectively. Furthermore, the simulation evaluates the influences of metal work function, uniform donor density in the electron transport layer and the impact of series resistance on the photovoltaic parameters of proposed n-TiO2/i-CH3NH3SnBr3/p-NiO solar cell. Considering all the optimization parameters, CH3NH3SnBr3-based perovskite solar cell exhibits the highest efficiency of 21.66% with the Voc of 0.80 V, Jsc of 31.88 mA/cm2 and Fill Factor of 84.89%. These results divulge the development of environmentally friendly methyl ammonium tin bromide perovskite solar cell.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.