Patent ID: 7808174
Filing Date: 2010-10-05
Classification: H01L

Abstract:
1. A light-emitting diode comprising a first electrode, a second electrode and a light-emitting layer being positioned between the two electrodes and comprising a matrix for providing a solid electrolyte, and ions, which are moveable in said the solid electrolyte, the diode further comprising ions, a layer of a cation receptor, the layer of the cation receptor being positioned between the first electrode and the light-emitting layer, and a layer an anion receptor, the layer of the anion receptor being positioned between the second electrode and the light-emitting layer, wherein at least one of the cation receptor and anion receptor comprises bulky molecules each having a site attracting cations and anions, respectively, the layer of cation receptor having captured cations, thereby forming a concentration of immobilized cations at the first electrode, the layer of anion receptor having captured anions, thereby forming a concentration of immobilized anions at the second electrode, wherein an ion gradient is formed providing for injection of electrons from the first electrode and of holes from the second electrode when the light-emitting diode is exposed to a forward bias.