Conversion Efficiency of Strained Wurtzite ZnSnN2/InxGa1-xN Cylindrical Quantum Dot Solar Cell Under Influence of Built-in Electric Field

Abstract

Within the effective mass approximation, the band gap of strained wurtzite ZnSnN2/InxGa1-xN cylindrical quantum dot is calculated theoretically by a variational method. Furthermore, based on the detailed balance theory, the relationship between the conversion efficiency of cylindrical quantum dot solar cell and the radius, height and In component of quantum dot under the influence of built-in electric field and multiple exciton generation are studied. The results show that the conversion efficiency of quantum dot solar cell increases monotonously with the increase of quantum dot radius, height and In component. The multiple exciton generation can obviously improve the conversion efficiency of solar cells, but the built-in electric field can reduce the conversion efficiency of solar cells significantly.

Tasks

Reproductions