Inproceedings,

A phenomenological investigation on porous silicon elecroluminescence

, , , and .
Silicon based optoelectronic materials, 298, page 397-402. Pittsburgh, Pa., (1993)
DOI: 10.1557/PROC-298-397

Abstract

The processing of light emitting diodes in porous silicon with green/blue electroluminescence spectrum is described. The spectral behaviour and the degradation are investigated. A phenomenological theory for the luminescence is given. The fabrication and properties of a light-emitting porous silicon device incorporating a p-n junction are presented. By means of a selective anodization of a sandwich of p+ on n-substrate, a nanoporous recombination region within the p-n junction is formed. The device shows rectifying characteristics with a considerable series resistance. When driven under forward bias, the diode emits bright light with linear dependence on the current. The measured external quantum efficiency is of the order of 10high-2 percent. The internal quantum efficiency should be at least one order of magnitude higher.

Tags

Users

  • @unibiblio-4

Comments and Reviews