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- W2795368681 abstract "A three-terminal spectroscopy that probes both subsurface energy barriers and interband optical transitions in a semiconductor heterostructure is demonstrated. A metal-base transistor with a unipolar p-type semiconductor collector embedding InAs/GaAs quantum dots (QDs) is studied. Using minority/majority carrier injection, ballistic electron emission spectroscopy and its related hot-carrier scattering spectroscopy measures barrier heights of a buried AlxGa1-xAs layer in conduction band and valence band respectively, the band gap of Al0.4Ga0.6As is therefore determined as 2.037 +/- 0.009 eV at 9 K. Under forward collector bias, interband electroluminescence is induced by the injection of minority carriers with sub-bandgap kinetic energies. Three emission peaks from InAs QDs, InAs wetting layer, and GaAs are observed in concert with minority carrier injection." @default.
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- W2795368681 date "2006-12-22" @default.
- W2795368681 modified "2023-09-27" @default.
- W2795368681 title "Probing energy barriers and quantum confined states of buried semiconductor heterostructures with ballistic carrier injection" @default.
- W2795368681 hasPublicationYear "2006" @default.
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