Visible light emission from a pn junction of porous silicon and microcrystalline silicon carbide

Abstract
We have fabricated a new type of light‐emitting diode based on a porous silicon and microcrystalline silicon carbide pn junction. The visible light emission from 580 to 820 nm with a peak of 700 nm was observed at forward bias voltages larger than 18 V, and the emission was quite uniform over an area of 1 cm2.