Observation of quantum well polarization effects in the photocurrent of multilayer diodes
作者:
Giancarlo Ripamonti,
Federico Capasso,
W. T. Tsang,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 67,
issue 1
页码: 583-585
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.345200
出版商: AIP
数据来源: AIP
摘要:
Large electrical polarization effects in the time photoresponse of multilayer heterostructure diodes have been observed. This phenomenon manifests itself in a displacement current spike synchronous to a dark–light transition and in an opposite spike in the light–dark one. The effect is associated with the pileup and spatial separation of photogenerated electrons and holes in the wells in the space‐charge region of the diode. At a particular forward bias voltage, the conduction photocurrent is eliminated, allowing accurate measurements of this phenomenon.
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