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Be-doped low-temperature-grown GaAs material for optoelectronic switches

Be-doped low-temperature-grown GaAs material for optoelectronic switches

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Structural, electrical and recombination properties of Be-doped low-temperature MBE grown (LTG) GaAs have been investigated by using a number of different experimental techniques. These properties were analysed with respect to the applications of LTG GaAs in ultrafast optoelectronic devices. It has been found that a moderate Be-doping improves the structural quality of the layers and does not affect their semi-insulating behaviour. Electron and hole capture cross-sections, critical parameters for the design of optoelectronic devices from LTG GaAs, equal to σn=1.1×10−13 and σp=1.8×10−15 cm2 were also determined.

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