Illumination and Dark Current-Voltage Characteristics of Polymer-Silicon Heterojunction Solar Cells

Abstract

In this work, polymer-on-silicon solar cells were fabricated by coating different silicon substrates with conductive polyaniline layers. Different substrates with different resistivities were used to control the diffusion length of such configurations. Electrical measurements were performed in both illumination and dark conditions to study the characteristics of photogenerated carriers in the polymer layer contributing to the output of such solar cells. They show good agreement with the “hole mobility only” model for intensities ranging from 1% of AM1.5 up to AM1.5. In addition to low cost fabrication and less-complex technology, such design interestingly compete the conventional and advanced configurations of solar cells.