Abstract
The discovery in 1990 that porous silicon is a strong visible-light emitter at room temperature1 has challenged the conventional wisdom that silicon, is, not a useful semiconductor for light-emitting devices.2 Light-emitting porous silicon is made of a large density of nanometer-size silicon quantum dots whose surface is nearly perfectly passivated by silicon hydrides or silicon dioxide.
© 1995 Optical Society of America
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