Enhanced LWIR response of InP/InAsP quantum discs-in-nanowire array photodetectors by photogating and ultra-thin ITO contacts
Jeddi H, Adham K, Zhao Y, Witzigmann B, Römer F, Bermeo M, Borgström MT, Pettersson H (2024)
Publication Type: Journal article
Publication year: 2024
Journal
Book Volume: 35
Article Number: 215206
Journal Issue: 21
Abstract
Here we report on an experimental and theoretical investigation of the long-wavelength infrared (LWIR) photoresponse of photodetectors based on arrays of three million InP nanowires with axially embedded InAsP quantum discs. An ultra-thin top indium tin oxide contact combined with a novel photogating mechanism facilitates an improved LWIR normal incidence sensitivity in contrast to traditional planar quantum well photodetectors. The electronic structure of the quantum discs, including strain and defect-induced photogating effects, and optical transition matrix elements were calculated by an 8-band k·p simulation along with solving drift-diffusion equations to unravel the physics behind the generation of narrow linewidth intersubband signals observed from the quantum discs.
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Sweden (SE)How to cite
APA:
Jeddi, H., Adham, K., Zhao, Y., Witzigmann, B., Römer, F., Bermeo, M.,... Pettersson, H. (2024). Enhanced LWIR response of InP/InAsP quantum discs-in-nanowire array photodetectors by photogating and ultra-thin ITO contacts. Nanotechnology, 35(21). https://doi.org/10.1088/1361-6528/ad2bd0
MLA:
Jeddi, Hossein, et al. "Enhanced LWIR response of InP/InAsP quantum discs-in-nanowire array photodetectors by photogating and ultra-thin ITO contacts." Nanotechnology 35.21 (2024).
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