DOI: 10.1063/1.124610. Low-temperature organometallic epitaxy and its application to superlattice structures in thermoelectrics

Low-temperature organometallic epitaxy and its application to superlattice structures in thermoelectrics

10.1063/1.124610

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

We describe a simple, yet phenomenologically very different, low-temperature modification to the conventional metal–organic chemical vapor deposition. It has been applied to the epitaxy of hexagonal-phased Bi2Te3/Sb2Te3 superlattices on zinc-blende GaAs substrates. The modification enables a two-dimensional, layer-by-layer, epitaxy instead of a three-dimensional islanded growth. Therefore, this approach is of generic importance to the epitaxy of many electronic and magnetic materials and their superlattices. High-resolution transmission electron microscopy studies indicate that the interface between the GaAs substrate and Bi2Te3 film is qualitatively defect free and that periodic structures are formed in the Bi2Te3/Sb2Te3 superlattices, with one of the individual layers as small as 10 Å. Such ultra-short-period superlattices offer significantly higher carrier mobilities than their respective solid-solution alloys, apparently due to the elimination of alloy scattering and the minimal effects of random interface scattering on carrier transport. This represents one of the successful observations of enhanced carrier mobilities in monolayer-range superlattices.

Bibliography

Venkatasubramanian, R., Colpitts, T., OâQuinn, B., Liu, S., El-Masry, N., & Lamvik, M. (1999). Low-temperature organometallic epitaxy and its application to superlattice structures in thermoelectrics. Applied Physics Letters, 75(8), 1104â1106.

Authors 6

Rama Venkatasubramanian (first)
Thomas Colpitts (additional)
Brooks O’Quinn (additional)
Sandra Liu (additional)
Nadia El-Masry (additional)
Michael Lamvik (additional)

References 13 Referenced 121

{'key': '2024020316442325500_r1'}
10.1016/0022-0248(84)90415-9 / J. Cryst. Growth (1984)
10.1007/BF02654017 / J. Electron. Mater. (1985)
10.1557/PROC-478-73 / Mater. Res. Soc. Symp. Proc. (1997)
10.1016/0040-6090(92)90872-9 / Thin Solid Films (1992)
{'key': '2024020316442325500_r6'}
10.1063/1.356562 / J. Appl. Phys. (1994)
{'key': '2024020316442325500_r8'}
{'key': '2024020316442325500_r9'}
10.1063/1.98526 / Appl. Phys. Lett. (1987)
{'key': '2024020316442325500_r11', 'first-page': '397', 'volume': '79', 'year': '1986', 'journal-title': 'Inst. Phys. Conf. Ser.'} / Inst. Phys. Conf. Ser. (1986)
10.1063/1.1754248 / Appl. Phys. Lett. (1965)
{'key': '2024020316442325500_r13'}

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:36 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 11:44 a.m.)
Indexed	6 days, 15 hours ago (Aug. 27, 2025, 12:02 p.m.)
Issued	26 years ago (Aug. 23, 1999)
Published	26 years ago (Aug. 23, 1999)
Published Print	26 years ago (Aug. 23, 1999)

Funders 0

None

BibTeX

@article{Venkatasubramanian_1999, title={Low-temperature organometallic epitaxy and its application to superlattice structures in thermoelectrics}, volume={75}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.124610}, DOI={10.1063/1.124610}, number={8}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Venkatasubramanian, Rama and Colpitts, Thomas and O’Quinn, Brooks and Liu, Sandra and El-Masry, Nadia and Lamvik, Michael}, year={1999}, month=aug, pages={1104–1106} }

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