Elizabeth Lee wins first place at AIChE Conference in Electronics and Photonics Division
November 1, 2017
Silicon photonics: Meshing optics with applications
July 12, 2017
Programmable Nanophotonic Processor Studies Quantum Transport
July 5, 2017
Programmable nanophotonic processor studies quantum transport
July 3, 2017
Developing Nanomaterials for High Radiation Applications
May 24, 2017
Turning the Infrared into the Visible
May 8, 2017
February 27, 2017
Are curtains drawing to a close? Glass that switches from transparent to opaque may soon replace the need for blinds
August 31, 2016
Einzinger, M.; Wu, T.C.; Kompalla, J.F.; Smith, H.L.; Perkinson, C.F.; Nienhaus, L.; Wieghold, S.; Congreve, D.N.; Kahn, A.; Bawendi, M.G.; Baldo, M.A., "Sensitization of Silicon by Singlet Exciton Fission in Tetracene" Nature, accepted for publication, (2019) [CE].
What is an Exciton?
When a chlorophyll molecule in the leaf of a plant absorbs a photon of sunlight, the solar energy is converted into an excited state of the molecule known as an exciton. The exciton then transports the energy between molecules in the leaf, and ultimately mediates the conversion of sunlight into electrical energy.
Thus, excitons are packets of energy confined within a material. They are the crucial intermediate for energy transduction in all kinds of low-cost electronic materials. Excitons also dominate the behavior of disordered synthetic nano-materials like polymers and inorganic quantum dots. Consequently, excitons control solar energy conversion in low-cost solar cells, and also light emission in organic and quantum-dot based LEDs.