Abstract
An optoelectronic switch with both n- and p-type delta-doped (d-doped) quantum wells was investigated. The d-doped structures formed potential wells for the carrier accumulation and potential barriers for the carrier injection. Being possessed of d-doped sheets with different doping levels, the potential barriers were sequentially collapsed to produce a double negative-differential-resistance (NDR) phenomenon in the current-voltage (I-V) characteristics of the device due to the carrier accumulation in the potential wells. The device also showed an optical function related to the barrier heights controllable by incident light.
Publisher
The Electrochemical Society