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Improving Quantum Well Tube Homogeneity Using Strained Nanowire Heterostructures.

ABSTRACT: Bottom-up grown nanostructures often suffer from significant dimensional inhomogeneity, and for quantum confined heterostructures, this can lead to a corresponding large variation in electronic properties. A high-throughput characterization methodology is applied to >15,000 nanoskived sections of highly strained GaAsP/GaAs radial core/shell quantum well heterostructures revealing high emission uniformity. While scanning electron microscopy shows a wide nanowire diameter spread of 540_-60⁺⁶⁰ nm, photoluminescence reveals a tightly bounded band-to-band transition energy of 1546_-3⁺⁴ meV. A highly strained core/shell nanowire design is shown to reduce the dependence of emission on the quantum well width variation significantly more than in the unstrained case.

SUBMITTER: Patel N

PROVIDER: S-EPMC9982810 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Improving Quantum Well Tube Homogeneity Using Strained Nanowire Heterostructures.

Patel Nikesh N Fonseka H Aruni HA Zhang Yunyan Y Church Stephen S Al-Abri Ruqaiya R Sanchez Ana A Liu Huiyun H Parkinson Patrick P

ACS applied materials & interfaces 20230213 8

Bottom-up grown nanostructures often suffer from significant dimensional inhomogeneity, and for quantum confined heterostructures, this can lead to a corresponding large variation in electronic properties. A high-throughput characterization methodology is applied to >15,000 nanoskived sections of highly strained GaAsP/GaAs radial core/shell quantum well heterostructures revealing high emission uniformity. While scanning electron microscopy shows a wide nanowire diameter spread of 540<sub>-60</su ...[more]

PMID: 36779871

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