Three-dimensional confinement in the conduction band structure of InP

Three-dimensional confinement in the conduction band structure of InP

Menoni, Carmen S ; Miao, L. ; Patel, Dinesh ; Micic, O. I. ; Nozik, Arthur J., 1936-

"The work at CSU was supported by the National Science Foundation, and that at NREL by the U.S. Department of Energy, Office of Basic Energy Sciences, Chemical Sciences Division."

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 G-L and L-X crossings, or by the crossover between strongly coupled G and X states.

Colorado State University. Libraries

2000

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c1986 American Physical Society