Far-infrared photoconductivity in self-organized InAs quantum dots
- 20 April 1998
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 72 (16) , 2020-2022
- https://doi.org/10.1063/1.121252
Abstract
We report far-infrared photoconductivity in self-organized InAs/GaAs quantum dots grown by molecular beam epitaxy. Through use of a Fourier transform infrared spectrometer, a photoconductivity signal peaked at 17 μm is observed from a detector structure with doped InAs quantum dots in the intrinsic region. Comparison of photoluminescence and band-to-band photocurrent absorption spectra suggests the far-infrared response is due to intersubband transitions in the quantum dots.
Keywords
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