@article{6e8f051f64894c6c978868067dbd7b47,
title = "Interaction range of P-dopants in Si[110] nanowires: Determining the nondegenerate limit",
abstract = "It is well known that the activation energy of dopants in semiconducting nanomaterials is higher than in bulk materials owing to dielectric mismatch and quantum confinement. This quenches the number of free charge carriers in nanomaterials. Though higher doping concentration can compensate for this effect, there is no clear criterion on what the doping concentration should be. Using P-doped Si[110] nanowires as the prototypical system, we address this issue by establishing a doping limit by first-principles electronic structure calculations. We examine how the doped nanowires respond to charging using an effective capacitance approach. As the nanowire gets thinner, the interaction range of the P dopants shortens and the doping concentration can increase concurrently. Hence, heavier doping can remain nondegenerate for thin nanowires.",
keywords = "capacitance, Doping, first-principles electronic structure calculation, nanowire",
author = "Chan, {Tzu Liang} and Lee, {Alex J.} and Mok, {Alex W.K.} and Chelikowsky, {James R.}",
note = "A.J.L. and J.R.C. would like to acknowledge partial support from the U.S. Department of Energy (DoE) for work on nanostructures from grant DE-FG02-06ER46286 and support provided by the Scientific Discovery through Advanced Computing (SciDAC) program funded by U.S. DoE, Office of Science, Advanced Scientific Computing Research and Basic Energy Sciences under award number DE-SC0008877 on algorithms. Computational resources are provided in part by the National Energy Research Scientific Computing Center (NERSC) and the Texas Advanced Computing Center (TACC). T.L.C. acknowledges financial support from Hong Kong Baptist University under grant FRG2/13-14/034, and computational resources provided by the High Performance Cluster Computing Center (HPCCC) at Hong Kong Baptist University, which receives funding from the Research Grant Council, University Grant Committee of the HKSAR and the Hong Kong Baptist University. ",
year = "2014",
month = nov,
day = "12",
doi = "10.1021/nl502703z",
language = "English",
volume = "14",
pages = "6306--6313",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "11",
}