Charge Carrier Generation Potential of Graphene/Si-TiO_2 Based Solar Cell Device in UV-Vis Wavelength Range Spectra

摘要

Charges carrier generation potential of graphene/Si solar cell performing TiO_2 layer has been elucidated via simple analytical mathematical calculation. Optical electric field both as wavelength function and position of any points at light propagation direction performed by transfer matrix method while dissipated energy profile has observed using electromagnetic theory. Furthermore potential of excitons generation has explored by dividing dissipated energy by photon of wavelength λ then integrating to overall UV-Vis spectra. By this calculation it was revealed that silicon semiconductor material is responsive enough in visible region while by adding TiO_2 layer the excitons production is significantly increased until more than 10~(24)/s. Such metal oxide layer is entrusted able to enhance photons absorption in short wavelength spectra. Therefore the role of this metal oxide material should increase the performance in wider wavelength area.