Patent ID: 6992317
Filing Date: 2006-01-31
Classification: B82Y,C09K,H01L,H05B,Y10S

Abstract:
1. A p-n junction electroluminescent (EL) device, comprising successive multiple layers of: a semiconductor-on-insulator substrate; a first p-type Si layer grown on said substrate, part of said Si layer being patterned to produce electrically isolated Si electrodes at the bottom of said device; a thin layer of Si thinner than the substrate which allows further epitaxial growth; a second p-type semiconductor layer grown epitaxially, said second layer having an energy gap larger than both said first Si layer and a pseudomorphic cladding of the quantum dot nanocrystal (CNCs) layer; a layer comprising pseudomorphic cladded quantum dots nanocrystals (CNCs) with both cladding and core semiconductors having narrower energy gap than said second p-type layer for electroluminescence; an n-type semiconductor layer thinner than the substrate, wider energy gap than the cladding and core layers of cladded quantum dot nanocrystals (CNCs) grown on said CNC layer; and a metal layer forming a plurality of top contact electrodes deposited on the n-type wide energy gap semiconductor layer having patterned regions to confine current conduction in pixels of said EL device.