Type I band alignment in thequantum wells
- 28 December 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 63 (3) , 033303
- https://doi.org/10.1103/physrevb.63.033303
Abstract
Three independent experimental techniques, namely, time-resolved photoluminescence (PL) spectroscopy, PL polarization, and optically detected cyclotron resonance, are employed to determine the band alignment of quantum structures with a low-N composition. It is concluded that band lineup is type I based on the following experimental results: (i) comparable radiative decay time of the GaNAs-related emission measured from single GaNAs epilayers and from GaNAs/GaAs quantum well (QW) structures; (ii) polarization of the GaNAs-related emission; and (iii) spatial confinement of the photoexcited holes within the GaNAs layers under resonant excitation of the GaNAs QW’s.
Keywords
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