Colloidal semiconductor quantum dots (QDs) are robust, nanosized lumophores featuring narrowband absorption and emission spectra that can be tuned (via their size and/or composition) across a wide range of visible and infrared wavelengths. Since QDs can be synthesized and easily processed in solution, these unique materials naturally suggest their utility in a variety of large-area, potentially inexpensive electronic applications. By pairing microcontact-printed thin films of QDs with organic semiconductor charge transport layers, the demonstration of bilayer photovoltaic cells with large open circuit voltages will be presented. In addition, two potential color display technologies featuring QDs will also be highlighted: a transparent light-emitting diode architecture including air-stable sputtered metal oxide transport layers, as well as an AC-driven structure based on optical downconversion of a commercial blue phosphor.

My general research interests lie in the development and understanding of novel electronic/chemical processes for efficient energy harvesting, storage, and conversion using a wide variety of solution-processable materials (organic molecules, polymers, QDs, and inorganic nanostructures).

Mentors:

Vladimir Bulović, Electrical Engineering & Computer Science, Massachusetts Institute of Technology (Postdoc)

C. Daniel Frisbie, Chemical Engineering & Materials Science, University of Minnesota (PhD)