@article{Sun2019, 
author = {Qiang Sun and Han Gao and Xiaomei Yao and Kun Zheng and Pingping Chen and Wei Lu and Jin Zou},
title = {Au-catalysed free-standing wurtzite structured InAs nanosheets grown by molecular beam epitaxy},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {11},
pages = {2718-2722},
keywords = {molecular beam epitaxy, InAs nanosheet, wurtzite structure, catalyst supersaturation},
url = {https://www.sciopen.com/article/10.1007/s12274-019-2504-7},
doi = {10.1007/s12274-019-2504-7},
abstract = {In this study, we report the growth of free-standing InAs nanosheets using Au catalysts in molecular beam epitaxy. Detailed structural characterizations suggest that wurtzite structured InAs nanosheets, with features of extensive {1120} surfaces, grown along the < 1102 > direction and adopted {0001} nanosheet/catalyst interfaces, are initiated from wurtzite structured [0001] nanowires as the inclined epitaxial growth due to relatively higher In concentrations in Au catalysts, and grown from these inclined nanostructures through catalyst-induced axial growth and their enhanced lateral growth under the high growth temperature. Based on the facts that the nanosheets contain large low energy {1120} surfaces and {0001} nanosheet/catalyst interfaces, the growth of our nanosheets is a thermodynamically driven process. This study provides new insights into fabricating free-standing Ⅲ-Ⅴ nanosheets for their applications in future nanoscale devices.}
}