Application of superlattice bandpass filters in 10 micron infrared detection

The current transfer ratio of an infrared hot-electron transistor with a superlattice collector filter is presented. From the current transfer characteristics, it is demonstrated that the superlattice is able to collect electrons with specific energy against a broad background. The energy filtering...

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Bibliographic Details
Published in:Applied physics letters 1991-04, Vol.58, p.1533-1535
Main Authors: Choi, K K, Dutta, M, MOERKIRK, R P, Kuan, C H, Iafrate, G J
Format: Article
Language:English
Online Access:Get full text
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Summary:The current transfer ratio of an infrared hot-electron transistor with a superlattice collector filter is presented. From the current transfer characteristics, it is demonstrated that the superlattice is able to collect electrons with specific energy against a broad background. The energy filtering characteristics can be attributed to the underlying band structure of the superlattice. When the filter is applied to infrared radiation detection, the detectivity of the transistor is improved. (Author)
ISSN:0003-6951