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Schematic band diagram for a BEEL device, (a), and for a BHEL device, (b). The emitter is shown biased, and the collector unbiased in both. In BEEL, the energy distribution of emitted electrons favors Schottky-barrier hot electron collection; this distribution makes hot hole injection in BHEL more difficult.
Injected hot hole collector current as a function of the emitter and collector voltage biases for the ballistic Hole Emission luminescence device at .
Ballistic hole emission luminescence at constant emitter bias , for several collector biases at . The gray line indicates the blueshift caused by the -induced quantum-confined Stark effect.
Ballistic hole emission luminescence peak heights measured simultaneously with the data presented in Fig. 2. A collector bias threshold similar to the threshold seen in BEEL (Ref. 1) is evident.
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