Insights from 3D Device Modeling of Nanowall-Integrated n-CdS/p-CdTe Solar Cell

Utilizing TCAD's Silvaco software, an extensive three-dimensional device modeling of an n-CdS/p-CdTe solar cell based on the Nanowall architecture has been conducted. The device performance metrics such as open circuit voltage (Voc), fill factor (FF), power conversion efficiency (Eff), and quantum efficiency have been studied as a function of substrate thickness (CdTe Layer). The results not only unveil optimal geometries, such as a 100 nm CdTe layer thickness under the given design parameters, for achieving superior photovoltaic performance but also provide a deeper understanding of the underlying mechanisms driving the observed effects. This analysis is quite beneficial in the design of determining the appropriate substrate thickness for the solar cell at the nanoscale level.