 This study investigates the role of excitons and plasmids in excitonic solar cells and photovoltaic, PV, technologies. It produces new amorphous carbon, AC, like films on indium tin oxide, ITO, which have a three-fold increase in efficiency compared to existing biomass, derived AC. These films are made using a simple, environmentally friendly, and highly reproducible method. Spectroscopic ellipsometry was used to measure the complex dielectric function, loss function, and reflectivity of these films, revealing the presence of both excitons and plasmids. X-ray absorption and photoemission spectroscopy were also employed to determine the nature of electrons and holes in the films, and how this affects their ability to absorb light. This research demonstrates the importance of the coupling between resonant excitons and correlated plasmids in determining the efficiency of photovoltaic devices. This article was authored by D. Daminto, Retno Assi, Budi Prianto, and others. We are article.tv, links in the description below.