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Reliability enhancement of germanium nanowires using graphene as a protective layer: aspect of thermal stability. | LitMetric

Reliability enhancement of germanium nanowires using graphene as a protective layer: aspect of thermal stability.

ACS Appl Mater Interfaces

SKKU Advanced Institute of Nanotechnology, School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Korea.

Published: April 2014

AI Article Synopsis

Article Abstract

We synthesized thermally stable graphene-covered Ge (Ge@G) nanowires and applied them in field emission devices. Vertically aligned Ge@G nanowires were prepared by sequential growth of the Ge nanowires and graphene shells in a single chamber. As a result of the thermal treatment experiments, Ge@G nanowires were much more stable than pure Ge nanowires, maintaining their shape at high temperatures up to 850 °C. In addition, field emission devices based on the Ge@G nanowires clearly exhibited enhanced thermal reliability. Moreover, field emission characteristics yielded the highest field enhancement factor (∼2298) yet reported for this type of device, and also had low turn-on voltage. Our proposed approach for the application of graphene as a protective layer for a semiconductor nanowire is an efficient way to enhance the thermal reliability of nanomaterials.

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Source
http://dx.doi.org/10.1021/am5001294DOI Listing

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