Journal
PHYSICA B-CONDENSED MATTER
Volume 618, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physb.2021.413187
Keywords
Cs2AgBiBr6 halide double perovskite; ZnO nanorod ETL; P3HT HTL; Solar cell simulation by SCAPS; Solar cell simulation by wxAMPS; Alternative charge transport layers
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This study simulated a non-toxic, lead-free perovskite solar cell and identified key factors such as optimum absorber thickness, electron affinities, doping levels, and back contact work function. These results provide important guidance for fabricating environmentally friendly photovoltaic devices.
We carried out simulative investigations on a non-toxic, lead-free perovskite solar cell (PSC), where Cs2AgBiBr6, P3HT, ZnO nanorod, and C were utilized as the absorber layer, hole transport layer, electron transport layer, and back contact, respectively. At 600 nm optimum absorber thickness, the device achieved a maximum power conversion efficiency of 4.48%. The PSC operated optimally when the electron affinities were set at 3.3 eV and 4.6 eV for P3HT and ZnO nanorod, respectively. Moreover, the hole mobility and acceptor concentration of P3HT should be weighed during the choosing of appropriate doping additives and doping levels. Besides, the optimum back contact work function and absorber defect density were found to be 5.2 eV and 1015 cm-3, respectively. We also observed the effect of radiative recombination rates and different charge transport layers on the device's performance. Overall, this study's simulation results will provide insightful guidance towards fabricating an environmentally benign PSC.
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