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- W2021102738 abstract "We have studied the influence of nanoscaled lateral silicon/silicon–germanium layers and three-dimensional germanium quantum dots on the performance of silicon based infrared detectors in the wavelength range between 2 and 10 μm and solar cells for space applications. The SiGe heterostructures were grown by molecular-beam epitaxy (MBE) on 〈100〉-Si substrates allowing it to tailor the photoresponse and cut-off wavelength for IR-detectors by “band engineering” of the Ge-content and geometry of the active layers. A detectivity in excess of 8×1011 cm Hz0.5/W at 75 K was measured for Si/SiGe quantum well structures. In addition, the growth of Ge islands on Si layers in the Stranski–Krastanow mode was performed to increase absorption and quantum efficiency in Si-solar cells. Atomic force microscopy and photoluminescence measurements of Ge-island structures, grown by MBE under varying conditions, exhibit three-dimensional growth in a small temperature regime between 500°C and 700°C." @default.
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- W2021102738 date "2001-11-01" @default.
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- W2021102738 title "Enhanced performance of silicon based photodetectors using silicon/germanium nanostructures" @default.
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- W2021102738 doi "https://doi.org/10.1016/s0038-1101(01)00234-9" @default.
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