Nicholas Michael Thompson

US Patent:

20160237343, Aug 18, 2016

Filed:

Feb 16, 2016

Appl. No.:

15/045028

Inventors:

- Cambridge MA, US
Daniel N. Congreve - Cambridge MA, US
Nicholas John Thompson - Hamilton NJ, US
Mark W.B. Wilson - Somerville MA, US
Mengfei Wu - Cambridge MA, US
Moungi G. Bawendi - Cambridge MA, US
Vladimir Bulovic - Lexington MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

C09K 11/56
G01J 9/00
H01L 51/50

Abstract:

The present invention generally relates to composition and methods for upconverting light. In some embodiments, the composition and methods comprise an organic material, a nanocrystal, and a ligand capable of facilitating energy transfer between the nanocrystal and the organic material. In certain embodiments, the nanocrystal has a first excited energy state with an energy greater than a triplet state of the organic material. The organic material, in some embodiments, may be aromatic and/or include one or more pi-conjugated carbon-carbon double bonds. In some cases, incident light may be absorbed by the nanocrystal to produce triplet excitons. The triplet excitons may then transfer from the nanocrystal to the organic material and undergo triplet-triplet annihilation, creating a singlet state of approximately twice the energy of the triplet exciton. In certain embodiments, the singlet state fluoresces, resulting in the formation of a high energy photon.

US Patent:

20140224329, Aug 14, 2014

Filed:

Dec 4, 2013

Appl. No.:

14/096657

Inventors:

- Cambridge MA, US
Marc A. Baldo - Lexington MA, US
Nicholas John Thompson - Quincy MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H01L 51/42
H01L 51/00

US Classification:

136263

Abstract:

Embodiments described herein relate to devices containing photoactive materials that, in some cases, undergo singlet fission. In some cases, the devices (e.g., solar cells) can efficiently convert photonic energy into usable electricity, with external quantum efficiencies greater than 100% in the visible region.