Controlled electroluminescence spectra of porous silicon diodes with a vertical optical cavity
作者:
Minoru Araki,
Hideki Koyama,
Nobuyoshi Koshida,
期刊:
Applied Physics Letters
(AIP Available online 1996)
卷期:
Volume 69,
issue 20
页码: 2956-2958
ISSN:0003-6951
年代: 1996
DOI:10.1063/1.117742
出版商: AIP
数据来源: AIP
摘要:
It is demonstrated that a porous silicon (PS) optical cavity is available for the electroluminescence (EL) PS diode configuration. The PS diode is composed of a thin Au film, a light‐emitting PS layer, a multilayered PS mirror, ap‐type Si substrate, and an ohmic contact. When a sufficient bias voltage is applied to the diode, a uniform visible light emission is observed through the top contact. The EL intensity is fairly proportional to the driving current over a wide range of operation. The bandwidth of the EL spectrum is significantly reduced in comparison to that of the conventional PS diodes, owing to a resonance effect induced between the Au film and the multilayered PS mirror. These results suggest that the PS technology is a promising process for applications in monolithic integrated optoelectronics. ©1996 American Institute of Physics.
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