1996
DOI: 10.1063/1.117147
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Exciton dynamics in a novel high-yield GaInP quantum-wire array

Abstract: We report the carrier dynamics in a spontaneously organized array of quantum wires grown by a novel technique that involves strain induced lateral ordering (SILO). Our cw–photoluminescence (PL) measurements reveal a very strong optical anisotropy associated with these wires, while the time-resolved PL measurements demonstrate a very interesting carrier dynamics due to localization of excitons and slow interwire scattering. The high quality and freedom from defects of the SILO multiple quantum wire array are ni… Show more

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Cited by 10 publications
(3 citation statements)
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“…The polarization degree we find at the absorption edge (1010 nm) is of 3.5%, quite low compared with other QWR structures (>80%), 18 suggesting that the lateral confinement is relatively weak even at the ground state and the QWR character of these nanostructures is not strong. The polarization degree increases at longer wavelengths and goes down to zero at the shorter ones, consistent with more localised ground states in QWRs of different sizes and the presence of QW-like excited energy levels in the nanostructures.…”
mentioning
confidence: 86%
“…The polarization degree we find at the absorption edge (1010 nm) is of 3.5%, quite low compared with other QWR structures (>80%), 18 suggesting that the lateral confinement is relatively weak even at the ground state and the QWR character of these nanostructures is not strong. The polarization degree increases at longer wavelengths and goes down to zero at the shorter ones, consistent with more localised ground states in QWRs of different sizes and the presence of QW-like excited energy levels in the nanostructures.…”
mentioning
confidence: 86%
“…3,4 TEM measurements confirm the presence of wire regions in these structures, but fail to provide any information on either the extent or profile of the composition modulation. Since this composition modulation is the result of a self-ordering process, one does not a priori know the shape of the modulation profile.…”
mentioning
confidence: 86%
“…9, where dot and dash lines represent biexponential fits to the data. 23 The initial decay time constant is 1.6 ns for P 1 and 1.8 ns for P 2 . The faster decay rate for P 1 and the reversal of P 1 and P 2 intensities indicate that channels for the diffusive transport of carriers between the P 1 and P 2 levels ͑QWR regions 4 and 1͒ exist.…”
Section: Time-delay CL Measurements Of the Carrier Relaxation Reementioning
confidence: 99%