Resnick Institute Seminar
Thursday January 17, 2013 3:00 PM
Optoelectronic Devices Based on Colloidal Quantum Dot Solids
Speaker: Ted Sargent, University of Toronto
Location: Guggenheim 133 (Lees-Kubota Lecture Hall)
Seminar given by Ted Sargent Ph.D.
Solution-processed photovoltaics offer a cost-effective path to harvesting the abundant resource that is solar energy. The organic and polymer semiconductors at the heart of these devices generally absorb visible light; however, half of the Sun's power reaching the Earth's surface lies in the infrared.
Flexible solar cells that harvest wavelengths beyond 1 μm were first reported in 2005, and were based on the application of quantum-size-effect-tuned infrared-bandgap colloidal quantum dots. Since then, we have reported certified solar power conversion efficiencies exceeding 7%. Recent advances of interest include all-quantum-tuned tandem solar cells; and the emergence of all-inorganic colloidal quantum dot materials that use halide anions, instead of conventional organic ligands, for passivation.
I will summarize advances in the materials chemistry, fabrication, physical understanding, and performance-oriented engineering of colloidal quantum dot solar cells and light sensors.
Series Resnick Institute Seminar Series