Interfacial dynamics during lateral epitaxy of one-dimensional (1D) nanocrystals over 2D membranes (Conference Presentation)

Babak Nikoobakht

doi:10.1117/12.2275045

29 September 2017 Interfacial dynamics during lateral epitaxy of one-dimensional (1D) nanocrystals over 2D membranes (Conference Presentation)

Babak Nikoobakht

Author Affiliations +

Proceedings Volume 10349, Low-Dimensional Materials and Devices 2017; 103490C (2017) https://doi.org/10.1117/12.2275045
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

Interfacing mismatched low-dimensional materials is an important step in development of hybrid and complex heterostructures. At nanoscale size regimes, interfacial bonding strength and strain energy can very well define the structural integrity and physiochemical properties of semiconductor junctions changing fundamental properties such as distribution of electron-hole wave functions, carrier charge density, etc. Here, we present some of our results on structural behavior of 2D membranes and their overgrowth with laterally grown 1D nanocrystals. Based on the surface energy of 2D layered materials, we hypothesize different bonding scenarios between 1D and 2D nanocrystals. Using experimental results such as structural changes at the interfaces as well as electro-optical properties, we identify some of the interfacial forces involved, and discuss their significance in controlling the properties of the heterojunctions. We use the metal-catalyzed Surface-directed Vapor-Liquid-Solid (SVLS) process for the lateral growth of 1D nanocrystals

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Babak Nikoobakht "Interfacial dynamics during lateral epitaxy of one-dimensional (1D) nanocrystals over 2D membranes (Conference Presentation)", Proc. SPIE 10349, Low-Dimensional Materials and Devices 2017, 103490C (29 September 2017); https://doi.org/10.1117/12.2275045

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KEYWORDS

Nanocrystals

Epitaxy

Heterojunctions

Electro optics

Gold

Interfaces

Semiconductors

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