Three-dimensional confinement in the conduction band structure of InP
Date
2000
Authors
Nozik, Arthur J., author
Micic, O. I., author
Patel, Dinesh, author
Miao, L., author
Menoni, Carmen S., author
American Physical Society, publisher
Journal Title
Journal ISSN
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Abstract
Strong quantum confinement in InP is observed to significantly reduce the separation between the direct and indirect conduction band states. The effects of three-dimensional confinement are investigated by tailoring the initial separation between conduction band states using quantum dots (QDs) of different sizes and hydrostatic pressure. Analyses of the QD emission spectra show that the X1c states are lowest in energy at pressures of ~6 GPa, much lower than in the bulk. The transition to the X1c states can be explained by either a sequence of Γ-L and L-X crossings, or by the crossover between strongly coupled Γ and X states.
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Subject
conduction band states
quantum confinement