Photoinduced Absorbtion Study of Organic Photovoltaic Cells Sensitized with Inorganic Nanocrystals
Zachary A Barber
Committee: David Coffey, Langdon Martin, Steve Cartier
Organic solar cells combining conjugated polymers and either fullerenes or semi-conductor nanocrystals (Quantum Dots) are being studied as a cheaper, cleaner form of solar energy. However, photoconversion efficiencies for these cells have remained far behind those of their counterparts. Photoinduced Absorption, a method of measuring efficiency, was used to study charge creation in polymer/fullerene and polymer/QD blends. Increases in sensitivity allowed for measurement of stable charge in control samples.