Investigation of CdSe Quantum-dot-sensitized Silicon Solar Cell Characteristics by Means of FDTD Method

The sun emits ultraviolet (UV), visible and infrared light, however siliconbased solar cells mainly absorb visible light. The employing of the quantum dots (QDs) is a way to increasing the efficiency of the solar cells. CdSe QDs absorb UV light and emit visible light, thus high-energy photons are converting to low-energy photons. In this paper, we simulated the characteristics of a quantum dot solar cell by means of FDTD method. The employing of the CdSe QDs reduced the surface reflectance and enhanced short-circuit current density and generation rate. The enhancement of PCE is 23.88% comparing to solar cell without QDs.