00000ctm a22000003i 4500 UP-99796217612829788 Buklod 20230215105418.0 m |o d | ta 180823s xx d r |||| u| (iLib)UPD-00367512442 DENGII rda eng LG 993.5 2018 M37 M33 Mabuti, Levannie A. author. Photovoltaic and photocatalytic properties of bismuth oxyiodide-graphene nanocomposites Levannie A. Mabuti, Ian Kenneth S. Manding ; Candy C. Mercado, thesis adviser. Quezon City College of Engineering, University of the Philippines Diliman 2018. x, 84 leaves illustrations 28 cm text rdacontent unmediated rdamedia volume rdacarrier Thesis (Bachelor of Science in Materials Engineering)--University of the Philippines Diliman May 2018. Solar energy is considered to be the most viable solution for the future energy crisis and water pollution. In this study, we evaluate the photovoltaic and photocatalytic properties of chemical vapor deposited bismuth oxyiodide (BiOI) and bismuth oxyiodide graphene (BiOI-GR) nanocomposite thin films. They were characterized using XRD, SEM, UV-Vis spectrophotometer, and EIS. The BiOI thin film has an average thickness of 574 nm and a bandgap of 2.12 eV. The BioI and BIOI-GR thin films exhibited nanoflake morphology. It was found that addition of graphene increases absorbance by causing vertical growth of nanoflakes, imparting anti-reflectance and light trapping and also suppresses recombination due to its electron accepting nature. The photocatalytic activities of the thin films were evaluated by examining methylene blue (MB) degradation under visible light irradiation. BiOI-GR degraded 56.42% of MB in two hours while BiOI degraded 44.16%. Afterwards, FTO | BiOI | Graphite | Al and FTO || BiOI-GR | Graphite | Al solar cell devices were fabricated with photocurrent density values of 0.20 uA/cm2 and 0.27 uA/cm2, respectively. The improved properties of Biol GR are attributed to the anti-reflecting and light trapping properties of vertical BiOI-GR nanoflakes and the enhanced carrier separation due to graphene. Solar cells. Thin films. Photocatalysis. Manding, Ian Kenneth S. author. Mercado, Candy C. adviser. Thesis FI UP UPD DENG-II LG 993.5 2018 M37 M33 Thesis