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Effect of Epitaxial Stresses on the Time Dynamics of Photoexcited Charge Carriers in InGaAs−Based Superlattices
Published online by Cambridge University Press: 19 March 2019
Abstract
We report on the time-resolved measurements of photocarrier dynamics in InGaAs/InAlAs superlattices with epitaxial stresses in a wide range of optical pump fluences. We demonstrated that the contribution of free carrier absorption and two-photon absorption to the carrier dynamics decreases with an increase of epitaxial stresses. The lowest relaxation times of 1.7 and 8.3 ps, respectively attributed to carrier trapping and carrier recombination, were obtained for the structure with maximum epitaxial stresses.
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- Information
- MRS Advances , Volume 4 , Issue 1: Characterization, Mechanical Properties and Structure-Property Relationships , 2019 , pp. 15 - 20
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- Copyright © Materials Research Society 2019
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