@inproceedings{0362c9097ea34526babcd6fbe25ff8e5,
title = "Growth and characterization of cubic and non-cubic Ge nanocrystals",
abstract = "Germanium nanocrystals with tetragonal (ST-12) and diamond like cubic (Ge-I) phases have been selectively grown by controlling the ionization and electrostatic potential of Ge clusters in an ion cluster beam deposition system. Predominantly tetragonal nanocrystals were obtained when grown using neutral clusters. The percentage of cubic phase increased when grown by ionizing the clusters and accelerating them towards substrates by applying electrostatic bias in the range of 1.5-2.5kV. Raman spectroscopic measurement showed strong peak at 275cm-1 and 300cm-1 for tetragonal and cubic Ge nanocrystals, respectively. TEM measurements showed crystalline lattice fringes of both type of the nanocrystals. The selected area electron diffraction patterns showed (111) and (210) as the dominating lattice planes for tetragonal nanocrystals while the cubic phases had (111), (311) and (331) as the prominent lattice planes. The optical absorption edge redshifted from 1.75 to 1.55 eV as the percentage of the cubic phases increased in the NC composition in the composite film.",
author = "S. Mukherjee and A. Pradhan and S. Mukherjee and T. Maitra and A. Nayak and S. Bhunia",
note = "Publisher Copyright: {\textcopyright} 2016 Author(s).; International Conference on Condensed Matter and Applied Physics, ICC 2015 ; Conference date: 30-10-2015 Through 31-10-2015",
year = "2016",
month = may,
day = "6",
doi = "10.1063/1.4946162",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Shekhawat, {Manoj Singh} and Sudhir Bhardwaj and Bhuvneshwer Suthar",
booktitle = "International Conference on Condensed Matter and Applied Physics, ICC 2015",
}