Patent ID: 8643058
Filing Date: 2014-02-04
Classification: B82Y,H01L

Abstract:
1. An electro-optical device comprising a first electrode and a second electrode, the first electrode and the second electrode being positioned on a surface of a substrate, a plurality of nanocrystals positioned between the first electrode and the second electrode, and a third electrode positioned on the substrate and opposite the first electrode and second electrode, each nanocrystal and at least one electrode having a band gap offset sufficient to inject a charge carrier from the first electrode or second electrode into the nanocrystal, wherein at least one of the valence band and the conduction band of each nanocrystal is intermediate in energy to the allowed band energies of at least one electrode, and wherein the device is a secondary photoconductor configured such that one carrier is more mobile than the other and the more mobile carrier can be injected from the first or second electrode, and wherein the substrate or third electrode is transparent.