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    Simulation and optimization of lead-free CH3NH3SnI3 perovskite solar cells using SCAPS-1D

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    1-s2.0-S2666950125000513-main (1).pdf (5.338Mb)
    Date
    2025-12-31
    Author
    Revathy Raghunathan, Lekshmy
    Raza, Ehsan
    Ahmad, Zubair
    Bhadra, Jolly
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    Abstract
    Recent advances in photovoltaic technology have made perovskite solar cells attractive prospects for future energy solutions. However, the presence of lead (Pb) in many perovskite materials causes environmental and health problems, limiting their practical utility. This work investigates the possibility of lead-free perovskite solar cells (PSCs) with CH3NH3SnI3 as the absorber layer. CH3NH3SnI3 is chosen for its advantageous qualities such as non-toxicity, good visible light absorption, and smaller band gap. The SCAPS-1D modeling tool was used to model these cells performance in the AM 1.5 G solar spectrum. The study looks at how varying absorber layer thicknesses, doping levels, defect densities, operating temperatures, back contact materials,series and shunt resistance affect the performance of the solar cell. The simulated device structure is FTO/TiO2/IDL/CH3NH3SnI3/Carbon, with TiO2 as the electron transport layer (ETL) and CH3NH3SnI3 as the absorber layer. At 300 K, the device exhibits an open-circuit voltage (Voc) = 0.886 V, a fill factor (FF) = 81.58 %, a short-circuit current density (Jsc) = 30.68 mA/cm2, and a power conversion efficiency (PCE) = 22.23 %.
    URI
    https://www.sciencedirect.com/science/article/pii/S2666950125000513
    DOI/handle
    http://dx.doi.org/10.1016/j.rio.2025.100823
    http://hdl.handle.net/10576/64363
    Collections
    • Center for Advanced Materials Research [‎1482‎ items ]
    • Research of Qatar University Young Scientists Center [‎213‎ items ]

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