Abstract
We report studies of hydrogenated multiple-quantum-well (MQW) optical-modulator structures via electron-cyclotron-resonance-derived plasmas. Responsivity, optical transmission, current-voltage, and capacitance-voltage characterizations of Schottky- as well as pin-diode modulator structures were performed. We find photocurrent-collection efficiency and photoluminescence intensity to be enhanced by hydrogenation, with measurable improvement in electrically biased exciton-absorption linewidth also seen. We interpret our results as arising from increased carrier lifetime in the MQW region, because of passivation of deep levels/defects. The improvements were stable after 550 °C heat treatment. These effects may be useful for improving the yield of usable MQW devices grown in a given system.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
