In this paper we present our recent progresses towards efficient light emitting diodes based on porous silicon. We will touch the two following topics: 1) All porous silicon microcavities. Through the formation of a planar optical cavity it is possible to vary the spontaneous emission rate of orous silicon films. We demonstrate this by showing luminescence, and time resolved luminescence measurements performed on al porous silicon eriodic and random microcavities. 2) Light emitting diodes based on n-type doped silicon/porous silicon heterojunctions. Exploiting the selectivity of the orous silicon formation process we formed light emittng diodes with superior performance with respect to metal/porous silicon devices. The use of these diodes as gas sensors is also investigated
On the Route towards Efficient Light Emitting Diodes based on Porous Silicon
Bellutti, Pierluigi;Soncini, Giovanni;
1997-01-01
Abstract
In this paper we present our recent progresses towards efficient light emitting diodes based on porous silicon. We will touch the two following topics: 1) All porous silicon microcavities. Through the formation of a planar optical cavity it is possible to vary the spontaneous emission rate of orous silicon films. We demonstrate this by showing luminescence, and time resolved luminescence measurements performed on al porous silicon eriodic and random microcavities. 2) Light emitting diodes based on n-type doped silicon/porous silicon heterojunctions. Exploiting the selectivity of the orous silicon formation process we formed light emittng diodes with superior performance with respect to metal/porous silicon devices. The use of these diodes as gas sensors is also investigatedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
