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- W2127978943 abstract "A voltage tunable quantum dot (QD) photodetector for terahertz detection based on intersublevel transitions is proposed. The intersublevels are formed by the lateral electrical confinement applied on quantum wells and the transitions between them can be strongly tuned by the confinement. Under normal incidence, the peak detection wavelengths can be tuned from ∼50 to ∼90 µm (6.0 to ∼3.3THz) with a gate voltage range of − 5t o−2V. The peak absorption coefficient of detection is in the order of 10 3 cm −1 at 77K, and the peak detectivity of the photodetector can reach ∼10 9 cm 2 Hz 1/2 W −1 . The proposed approach has the advantage of forming a high uniformity of QD effective sizes and provides an alternative way to detect terahertz radiation. (Some figures in this article are in colour only in the electronic version)." @default.
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- W2127978943 date "2010-03-30" @default.
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- W2127978943 title "A voltage tunable quantum dot photodetector for terahertz detection" @default.
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- W2127978943 doi "https://doi.org/10.1088/0022-3727/43/15/155101" @default.
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