Ultrafast visible-infrared photodetector based on the SnSe2/Bi2Se3 heterostructure.
Opt Lett
; 47(19): 4977-4980, 2022 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-36181165
Using the inherent properties of a heterostructure, ultrafast photodetectors with high sensitivity can be progressively developed that have the potential to carve a niche among the optoelectronic devices. In this Letter, a heterojunction photodetector based on SnSe2/Bi2Se3 is constructed, and a visible-infrared photoresponse with good sensitivity at room temperature is obtained. The SnSe2/Bi2Se3 photodetector demonstrates a high Iph/Id ratio of 1.2 × 104 at 0â
V. Moreover, the high responsivity of 2.3 A/W, detectivity of 1.6 × 1011 Jones, and fast response time of 40 µs are simultaneously achieved. The presented results offer an alternative route for ultrafast photodetectors with high sensitivity.
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MEDLINE
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En
Ano de publicação:
2022
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Article