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Midinfrared photoconductivity of Ge/Si self-assembled quantum dots (2000)

Rappaport, N. ; Finkman, E.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 77 (2000), S. 3224-3226

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: We have investigated the midinfrared photoconductivity of Ge/Si self-assembled quantum dots. The self-assembled quantum dots were grown by ultra-high-vacuum chemical vapor deposition on Si(001). The photoresponse of the p-type device exhibits resonances in the midinfrared around 10 μm wavelength. The resonance of the photocurrent shifts to lower energy as the applied bias increases. The photocurrent is weakly dependent on the incoming polarization of the infrared light. The photocurrent is analyzed in terms of bound-to-bound and bound-to-continuum transitions in the valence band. The photocurrent peaks are correlated to the photoluminescence of the device. © 2000 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1326044

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