Formation of Perovskite layers and their characterization using spectroscopic methods

Abstract

Replacing fossil fuels with green energies has been the main area of field in energy for decades and solar energy has been leading the way. Currently the evolution of perovskite solar cell (PSC) within the photovoltaic research field has certainly changed the way forward. Quick development of efficiency from 4% to above 22% is due to its band-gap tunability which makes perovskite materials interesting for use in photovoltaic solar cells.

This thesis explores the photo physics of perovskite material by focusing on development of its different processes like electrodeposition, spin coating, dip coating and ultrasonic spray coating.

Secondly, comparison of the perovskites formed using different formation procedures were done using spectroscopic methods like Raman spectroscopy and UV-Vis spectroscopy. The degradation of the perovskite layers relative to humidity and moisture present in atmospheric air was evaluated and some experiments were performed to have an idea of how the degradation affected on material properties.

Finally, Poly (methyl methacrylate) (PMMA) was deposited on the top of the perovskite layer which was introduced for the prevention of perovskite layer from moisture and atmospheric humidity.