HgTe colloidal quantum dot photodiodes for extended short-wave infrared detection

HgTe colloidal quantum dots are investigated as the active material in photodiodes for extended short-wave infrared up to 2.6 μm. The HgTe colloidal quantum dots photodiodes achieve external quantum efficiencies above 50% and specific detectivities of 1 × 1011 at 2.2 μm at room temperature with a mi...

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Bibliographic Details
Published in:Applied physics letters 2020-02, Vol.116 (8)
Main Authors: Ackerman, Matthew M., Chen, Menglu, Guyot-Sionnest, Philippe
Format: Article
Language:English
Subjects:
Applied physics
Colloids
Photodiodes
Quantum dots
Response time
Room temperature
Short wave radiation
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Summary:HgTe colloidal quantum dots are investigated as the active material in photodiodes for extended short-wave infrared up to 2.6 μm. The HgTe colloidal quantum dots photodiodes achieve external quantum efficiencies above 50% and specific detectivities of 1 × 1011 at 2.2 μm at room temperature with a microsecond response time and compete with commercial extended InGaAs photodiodes.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.5143252