SCAPS-1D Modeling of CdTe Solar Cells Featuring a Dual-Layer FTO/ITO Transparent Conductive Electrode Conference

Datta, S, Das, S, Baul, A et al. (2025). SCAPS-1D Modeling of CdTe Solar Cells Featuring a Dual-Layer FTO/ITO Transparent Conductive Electrode . 1539-1544. 10.1109/PVSC59419.2025.11133302

cited authors

  • Datta, S; Das, S; Baul, A; Hodges, DR

authors

abstract

  • The numerical modeling of thin-film solar cells has become an essential tool for accelerating device development and reducing the experimental cost. Although CdTe technology has exceeded the 22% certified efficiency, further gains are curtailed by front-contact optical losses and electronic defects in the absorber. To address these limitations, we used SCAPS 1D to optimize a CdTe stack employing a bilayer transparent conductor (FTO/ITO), a ZnO electron transport layer (ETL), a CdTe absorber layer, and a Cu2O hole transport layer (HTL). With a bulk trap density of 1 × 1014 cm-3, the simulation predicts a power conversion efficiency (PCE) of 25. 20%, with a fill factor (FF) of 84. 69%, an open circuit voltage (VOC) of 1.21 V and a short circuit current density (Jsc) of 24.50 mA/cm2. Thickness sweeps indicate that CdTe films thicker than 650 nm add negligible current (< 0.1% PCE gain) but increase material usage.

publication date

  • January 1, 2025

Digital Object Identifier (DOI)

start page

  • 1539

end page

  • 1544