PHOTOVOLTAIC DEVICE USING SEMICONDUCTOR NANOCRYSTALS

摘要

PURPOSE: A photovoltaic device using semiconductor nano-crystals is provided to increase the photoelectric conversion efficiency by improving light absorption capacity. CONSTITUTION: A solar cell comprises a photo active layer(300) between a first electrode(100) and a second electrode(500). The photo active layer is a complex active layer comprised of a polymer(350) and a semiconductor nano crystal(330). The semiconductor nano-crystal has at least one interfaces. Band gaps of the interfaces are crossed with each other. The surface of the semiconductor nano-crystal comprises an electric charge. The electronics and hole of the semiconductor nano-crystal are placed on a different semiconductor layer.