Patent ID: 8154007
Filing Date: 2012-04-10
Classification: B82Y,H01L,Y10S

Abstract:
1. A silicon-quantum-dot (Si-QD) semiconductor near-infrared photodetector, comprising: a substrate; an epi-like silicon layer, said epi-like silicon layer being deposed on said substrate, said epi-like silicon layer respectively having a source on a part of area of said epi-like silicon layer and a drain on another part of area of said epi-like silicon layer; and a gate dielectric, said gate dielectric being deposed on said epi-like silicon layer, said gate dielectric comprising two buffer layers and a Si-QD structure, said Si-QD structure being clipped between said two buffer layers, said gate dielectric having a gate deposed on said gate dielectric, wherein said Si-QD structure is selected from a group consisting of a Si-QD superlattice (SL) and a silicon nanocrystal/mesoporous silica (nc-Si/MS); wherein said Si-QD structure is formed by mesoporous silica and arrays of high-density quantum dots; wherein said quantum dots are made of a nanocrystal and are obtained on inner walls of said pores of said mesoporous silica; wherein said nanocrystal is nanocrystalline silicon; wherein said mesoporous silica has adjustable pores and is obtained to form a template with said gate dielectric of a nano-structural silicon-base membrane as infrared light absorber to form a three-terminal nano-structural silicon-oxide gate transistor; and wherein, after said Si-QD structure absorbs a light beam having a wavelength ranged from 320 nanometers (nm) to 1900 nm, a optoelectronic response is obtained.