Research output per year
Research output per year
Hossein Jeddi, Kristi Adham, Yue Zhao, Bernd Witzigmann, Friedhard Römer, Marie Bermeo, Magnus T. Borgström, Håkan Pettersson
Research output: Contribution to journal › Article › peer-review
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.
Original language | English |
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Article number | 215206 |
Journal | Nanotechnology |
Volume | 35 |
Issue number | 21 |
DOIs | |
Publication status | Published - 2024 May 20 |
Research output: Thesis › Doctoral Thesis (compilation)