Fabrication and comparison of photovoltaic devices based on different shape PbS nanoparticles

Abstract

In this work lead sulfide nanoparticles are grown by simple chemical methods. The morphology of the materials is characterized by using x-ray diffraction, transmission, and scanning electron microscopy. The bandgap energy of materials is determined from near-infrared absorption spectra. The PbS films are deposited on indium tin oxide coated glass by the solution dip process. Photovoltaic devices are fabricated by depositing evaporated aluminum dots on PbS film. I-V characterizations of fabricated devices are performed under dark and illumination conditions. A comparative solar cell characteristic study is done among different nanomaterials based photovoltaic devices. The effect of particle size on the solar cell characteristics is studied.