Controlled fabrication of silicon quantum rods yielding high intensity, polarized light emission

Abstract

Elongated silicon quantum dots (also referred to as rods) were fabricated using a lithographic process which reliably yields sufficient numbers of emitters. These quantum rods are perfectly aligned and the vast majority are spatially separated well enough to enable single-dot spectroscopy.

Not only do they exhibit extraordinarily high linear polarization with respect to both absorption and emission, but the silicon rods also appear to luminesce much more brightly than their spherical counterparts. Significantly increased quantum efficiency and almost unity degree of linear polarization render these quantum rods perfect candidates for numerous applications.

Keywords

• Controlled
• fabrication
• silicon
• quantum
• yielding
• intensity
• polarized
• light
• emission