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- W1987188220 abstract "We have investigated lateral conduction mid-infrared photodetectors using the photoionization of holes in the valence band of self-assembled Ge/Si quantum dots. A mid-infrared photocurrent signal was observed in the photon energy range of 140–400 meV resulting from an intersubband transition in the valence band of self-assembled Ge quantum dots and subsequent lateral transport of photoexcited carriers in the SiGe conduction channel. The peak responsivity was 134 mA W−1 at a photon energy of 240 meV at T = 10 K. Furthermore, the band structure of the Ge QD system was estimated using electrical and optical measurements." @default.
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- W1987188220 date "2007-02-06" @default.
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- W1987188220 title "Lateral photoconductivity and bound states of self-assembled Ge/Si quantum dots" @default.
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- W1987188220 doi "https://doi.org/10.1088/0957-4484/18/10/105403" @default.
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