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2017 | 132 | 2 | 325-328
Article title

Studies of Dark Current Reduction in InAsSb Mid-Wave Infrared HOT Detectors through Two Step Passivation Technique

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Languages of publication
EN
Abstracts
EN
We report on the investigation of the surface leakage current for InAs_{1-x}Sb_x (x=0.09) high operation temperature photodiode grown on GaAs substrate in accelerated short-term stability test. The electrochemical passivation technique was proposed to modify the mesa sidewalls properties and obtain anodic sulphur coating covered by SU-8 negative photoresist. The electrical behavior of sulphur anodic film, SU-8 photoresist, and unpassivated devices was compared for devices in variable area diode array test. The surface resistivity for anodic sulphur film, SU-8 and unpassivated devices are equal to 1080, 226, 10200 kΩ cm, respectively, at 150 K and 1340, 429, 2870 kΩ cm, respectively, at 150 K after an exposure of 20 h to atmosphere at 373 K. The Auger recombination process was evaluated as the main mechanism of diffusion current in HOT devices.
Keywords
EN
Year
Volume
132
Issue
2
Pages
325-328
Physical description
Dates
published
2017-08
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv132n2p29kz
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