Noise characterization of organic/hybrid solar cells

The thesis is aimed at analyzing current fluctuation mechanisms in organic and silicon heterojunction solar cells. For the latter, thermal admittance spectroscopy was evaluated as comparison and complementary tool to the previous technique. Current fluctuations in both devices were analyzed investigating properties of 1/f noise in function of the storage time in air for organic solar cells and in function of the area in silicon heterojunction devices. The latters, have been under a reverse bias step stress to simulate microcraks behaviour in solar panels when a reverse bias condition occurs. During the stress time, electroluminesce was used to monitor radiative emission in the devices. The work done in this thesis is a result of a collaboration between the Technische Universität of Wien and the University of Padua within the Erasmus+ program.