Space-charge-limited triode using a Cr-doped semi-insulating GaAs

By providing ohmic contacts and a rectifying contact to a Cr-doped semi-insulating GaAs material, triode-like device characteristics were experimentally verified. The current drawn through the device is interpreted as space-charge-limited current (SCLC). Operation of the device is shown to be qualitatively in agreement with the vacuum triode analog.