Patent ID: 6683367
Filing Date: 2004-01-27
Classification: H01L,Y02E,Y02P

Abstract:
A thin-film opto-electronic device on a conductive substrate, said device including a sequence of layers, said layers comprising at least:a layer of a porous medium, on said substrate, said porous layer having a first porous layer with a first porosity and a second porous layer on said first porous layer, said second porous layer having a porosity that is different than the porosity of said first porous layer, said layer of a porous medium having both light diffusing and light reflecting properties; a non-porous layer on said layer of a porous medium, with at least one first region and at least one second region, said first region of a first conductivity type, said second region having a conductivity of a second type, different from said first conductivity type, said sequence of layers being such that optical confinement is realized in said device.