Patent ID: 9627592
Date: 2017-04-18
CPC Classifications: B82Y,G02B,H01L,Y10S

Claim:
1. A light emitting device disposed comprising: a first electrode; a first electron injection layer disposed over the first electrode; a first layer of a plurality of free standing quantum dots having a size selected for emitting light having a first predetermined wavelength disposed over the electron injection layer; a first hole transport layer disposed adjacent the first layer of the plurality of quantum dots; a second electrode disposed over the first hole transport layer; a light source disposed and configured to apply radiation emitted by the light source to the first layer of the plurality of free standing quantum dots to create a first photon output including the first predetermined wavelength, wherein the radiation emitted by the light source includes a wavelength shorter than the first predetermined wavelength, the application of radiation to the first layer of the plurality of free standing quantum dots being controlled by a switch connected to a first voltage source for selectively activating the light source; and a switching device coupled between the first and second electrodes and configured to be coupled to a second voltage source for modulating intensity of the first photon output created by the application of radiation to the first layer of the plurality of free standing quantum dots by adjusting the magnitude of a first plurality of electrons injected into the free standing quantum dots to provide a desired first photon output intensity, wherein the application of radiation to the first plurality of free standing quantum dots and the injection of the first plurality of electronics into the first plurality of free standing quantum dots are separately controlled.