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Hydrogenation of multiple-quantum-well optical-modulator structures (1994)

Woodward, T. K. ; Cunningham, J. E. ; Jan, W. Y. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 65 (1994), S. 2174-2176

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: 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. © 1994 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.112752

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