Optimasi Teoritik Ketebalan Lapisan Aktif Buckminsterfullerene (C60) pada Peranti Fotovoltaik Berbasis Bahan Organik Copper Phthalocyanine

Abstract

A done theoretical calculation on the thickness of the active layers in a heterojunction thin film photovoltaic device based on copper phthalocyanine (CuPc) that gives the highest IPCE (Incident Photon to Current Efficiency). The calculation is based on the assumption that the photocurrent generation process is the result of the creation of photogenerated excitons, which difuse before dissociated at the CuPc/C60 interface following the diffusion equation. It is also assumed that almost all photocurrent is created in the CuPc/ C60 interface. Finally, we found that the optimum thickness of C60 layer that gives the highest IPCE, at the wavelength 617 nm and 440 nm, which are the wavelengths at which the absorption coefficients of CuPc and C60 reach the maximum values, are respectively 29,3 nm and 62,2 nm.