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Lähnemann J, Hill MO, Herranz J, Marquardt O, Gao G, Al Hassan A, Davtyan A, Hruszkewycz SO, Holt MV, Huang C, Calvo-Almazán I, Jahn U, Pietsch U, Lauhon LJ, Geelhaar L. Correlated Nanoscale Analysis of the Emission from Wurtzite versus Zincblende (In,Ga)As/GaAs Nanowire Core-Shell Quantum Wells. NANO LETTERS 2019; 19:4448-4457. [PMID: 31141672 DOI: 10.1021/acs.nanolett.9b01241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
While the properties of wurtzite GaAs have been extensively studied during the past decade, little is known about the influence of the crystal polytype on ternary (In,Ga)As quantum well structures. We address this question with a unique combination of correlated, spatially resolved measurement techniques on core-shell nanowires that contain extended segments of both the zincblende and wurtzite polytypes. Cathodoluminescence hyperspectral imaging reveals a blue-shift of the quantum well emission energy by 75 ± 15 meV in the wurtzite polytype segment. Nanoprobe X-ray diffraction and atom probe tomography enable k·p calculations for the specific sample geometry to reveal two comparable contributions to this shift. First, there is a 30% drop in In mole fraction going from the zincblende to the wurtzite segment. Second, the quantum well is under compressive strain, which has a much stronger impact on the hole ground state in the wurtzite than in the zincblende segment. Our results highlight the role of the crystal structure in tuning the emission of (In,Ga)As quantum wells and pave the way to exploit the possibilities of three-dimensional band gap engineering in core-shell nanowire heterostructures. At the same time, we have demonstrated an advanced characterization toolkit for the investigation of semiconductor nanostructures.
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Affiliation(s)
- Jonas Lähnemann
- Paul-Drude-Institut für Festkörperelektronik , Leibniz-Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - Megan O Hill
- Department of Materials Science and Engineering , Northwestern University , Evanston , Illinois 60208 , United States
| | - Jesús Herranz
- Paul-Drude-Institut für Festkörperelektronik , Leibniz-Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - Oliver Marquardt
- Weierstraß-Institut für Angewandte Analysis und Stochastik , Leibniz-Institut im Forschungsverbund Berlin e.V. , Mohrenstr. 39 , 10117 Berlin , Germany
| | - Guanhui Gao
- Paul-Drude-Institut für Festkörperelektronik , Leibniz-Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - Ali Al Hassan
- Naturwissenschaftlich-Technische Fakultät der Universität Siegen , 57068 Siegen , Germany
| | - Arman Davtyan
- Naturwissenschaftlich-Technische Fakultät der Universität Siegen , 57068 Siegen , Germany
| | - Stephan O Hruszkewycz
- Materials Science Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Martin V Holt
- Center for Nanoscale Materials , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Chunyi Huang
- Department of Materials Science and Engineering , Northwestern University , Evanston , Illinois 60208 , United States
| | - Irene Calvo-Almazán
- Materials Science Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Uwe Jahn
- Paul-Drude-Institut für Festkörperelektronik , Leibniz-Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
| | - Ullrich Pietsch
- Naturwissenschaftlich-Technische Fakultät der Universität Siegen , 57068 Siegen , Germany
| | - Lincoln J Lauhon
- Department of Materials Science and Engineering , Northwestern University , Evanston , Illinois 60208 , United States
| | - Lutz Geelhaar
- Paul-Drude-Institut für Festkörperelektronik , Leibniz-Institut im Forschungsverbund Berlin e.V. , Hausvogteiplatz 5-7 , 10117 Berlin , Germany
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Linnerud I, Chao KA. Exciton binding energies and oscillator strengths in a symmetric AlxGa1-xAs/GaAs double quantum well. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:8487-8490. [PMID: 10009619 DOI: 10.1103/physrevb.49.8487] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lefebvre P, Christol P, Mathieu H. Excitons in semiconductor superlattices: Heuristic description of the transfer between Wannier-like and Frenkel-like regimes. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:13603-13606. [PMID: 10003411 DOI: 10.1103/physrevb.46.13603] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fu Y, Chen Q, Willander M, Chao KA. Quasi-two-dimensional electron system in a GaAs/AlxGa1-xAs heterojunction. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:6709-6714. [PMID: 10000432 DOI: 10.1103/physrevb.45.6709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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