University of Toronto

Invisage Technologies, Inc.

Jiang Tang

Edward Hartley Sargent

Gerasimos Konstantatos

Andras Pattantyus-Abraham

Xihua Wang

Aaron Barkhouse

Edward H Sargent

Illan Kramer

Ratan Debnath

Konstantatos Gerasimos

Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions, an inner shell containing cations to passivate the core surface anions, and an outer shell to passivate the inner shell anions and anions on the core surface.

Photovoltaic devices with depleted heterojunctions and shell-passivated nanoparticles

A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystals. A semiconductor material is described that comprises p-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of electrons in the semiconductor material being greater than or equal to a mobility of holes. A semiconductor material is described that comprises n-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of holes in the semiconductor material being greater than or equal to a mobility of electrons.

Colloidal nanoparticle materials for photodetectors and photovoltaics

Growing community of inventors

Toronto, Canada

Jiang Tang