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Sub-monolayer quantum dot quantum cascade mid-infrared photodetector

Huang, J; Guo, D; Chen, W; Deng, Z; Bai, Y; Wu, T; Chen, Y; ... Chen, B; + view all (2017) Sub-monolayer quantum dot quantum cascade mid-infrared photodetector. Applied Physics Letters , 111 , Article 251104. 10.1063/1.5011239. Green open access

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Abstract

In this work, we demonstrate a sub-monolayer quantum dot quantum cascade photodetector grown on GaAs for photovoltaic mid-infrared photo-detection. The detector shows a normal-incident peak responsivity of 1.90 mA/W at the wavelength of 6.05 μm and a resistance-area product of 1.54 × 108 Ω cm2 at 77 K. The corresponding specific detectivity is 3.22 × 1011 cm·Hz1/2/W.

Type: Article
Title: Sub-monolayer quantum dot quantum cascade mid-infrared photodetector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.5011239
Publisher version: https://doi.org/10.1063/1.5011239
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Physics, Applied, Physics, Detectors
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10041826
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