A new structure is proposed to improve the external quantum efficiency of porous silicon (PS) light emitting diodes (LED). It is based on a heterojunction between n-type doped silicon and PS. The heterojunction is formed due to the doping selectivity of the etching process used to form PS. The improvement of the proposed LED structure with respect to usual metal/PS LED is demonstrated. This is thought to be due to a different injection mechanism for which carriers are injected directly into conduction band states. Anodic oxidation experiments show further improvements in the LED efficiency

Light emitting porous silicon diode based on a silicon/porous silicon heterojunction / L., Pavesi; R., Chierchia; P., Bellutti; A., Lui; F., Fuso; M., Labardi; L., Pardi; F., Sbrana; M., Allegrini; S., Trusso; C., Vasi; P. J., Ventura; L. C., Costa; M. C., Carmo; Bisi, Olmes. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - STAMPA. - 86:(1999), pp. 6474-6482.

Light emitting porous silicon diode based on a silicon/porous silicon heterojunction

BISI, Olmes
1999

Abstract

A new structure is proposed to improve the external quantum efficiency of porous silicon (PS) light emitting diodes (LED). It is based on a heterojunction between n-type doped silicon and PS. The heterojunction is formed due to the doping selectivity of the etching process used to form PS. The improvement of the proposed LED structure with respect to usual metal/PS LED is demonstrated. This is thought to be due to a different injection mechanism for which carriers are injected directly into conduction band states. Anodic oxidation experiments show further improvements in the LED efficiency
1999
86
6474
6482
Light emitting porous silicon diode based on a silicon/porous silicon heterojunction / L., Pavesi; R., Chierchia; P., Bellutti; A., Lui; F., Fuso; M., Labardi; L., Pardi; F., Sbrana; M., Allegrini; S., Trusso; C., Vasi; P. J., Ventura; L. C., Costa; M. C., Carmo; Bisi, Olmes. - In: JOURNAL OF APPLIED PHYSICS. - ISSN 0021-8979. - STAMPA. - 86:(1999), pp. 6474-6482.
L., Pavesi; R., Chierchia; P., Bellutti; A., Lui; F., Fuso; M., Labardi; L., Pardi; F., Sbrana; M., Allegrini; S., Trusso; C., Vasi; P. J., Ventura; L. C., Costa; M. C., Carmo; Bisi, Olmes
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/307620
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