In Silico Investigation of the Impact of Hole-Transport Layers on the Performance of CH3NH3SnI3 Perovskite Photovoltaic Cells

Perovskite solar cells represent one of the recent success stories in photovoltaics. The device efficiency has been steadily increasing over the past years, but further work is needed to enhance the performance, for example, through the reduction of defects to prevent carrier recombination. SCAPS-1D...

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Bibliographic Details
Published in:Crystals (Basel) 2022-05, Vol.12 (5), p.699
Main Authors: Omarova, Zhansaya, Yerezhep, Darkhan, Aldiyarov, Abdurakhman, Tokmoldin, Nurlan
Format: Article
Language:English
Subjects:
Carrier recombination
CH3NH3SnI3
Computer architecture
Copper oxides
Defects
Efficiency
Electromagnetic absorption
Glass substrates
HTL
modeling
perovskite solar cells
Perovskites
Photovoltaic cells
SCAPS-1D
Silicon
Simulation
Solar cells
Titanium dioxide
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Summary:Perovskite solar cells represent one of the recent success stories in photovoltaics. The device efficiency has been steadily increasing over the past years, but further work is needed to enhance the performance, for example, through the reduction of defects to prevent carrier recombination. SCAPS-1D simulations were performed to assess efficiency limits and identify approaches to decrease the impact of defects, through the selection of an optimal hole-transport material and a hole-collecting electrode. Particular attention was given to evaluation of the influence of bulk defects within light-absorbing CH3NH3SnI3 layers. In addition, the study demonstrates the influence of interface defects at the TiO2/CH3NH3SnI3 (IL1) and CH3NH3SnI3/HTL (IL2) interfaces across the similar range of defect densities. Finally, the optimal device architecture TiO2/CH3NH3SnI3/Cu2O is proposed for the given absorber layer using the readily available Cu2O hole-transporting material with PCE = 27.95%, FF = 84.05%, VOC = 1.02 V and JSC = 32.60 mA/cm2, providing optimal performance and enhanced resistance to defects.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst12050699