@article{633e508815754de3bec4748e14a3d599,
title = "Mapping electrostatic profiles across axial p-n junctions in Si nanowires using off-axis electron holography",
abstract = "Si nanowires (NWs) with axial p-n junctions were grown by the vapor-liquid-solid method. Transmission electron microscopy and electron holography were used to characterize the microstructure and electrostatic properties. Measurement of the potential profile showed the presence of a p-n junction with a height of 1.0 ± 0.3 V. A Schottky barrier was observed at the end of the NW due to the Au catalyst particle. Comparison with simulations indicated dopant concentrations of 1019 cm-3 for donors and 1017 cm-3 for acceptors. These results confirm the benefit of combining off-axis electron holography with simulations for determining localized information about the electrically active dopant distributions in nanowire structures.",
author = "Zhaofeng Gan and Perea, {Daniel E.} and Jinkyoung Yoo and {Tom Picraux}, S. and David Smith and Martha McCartney",
note = "Funding Information: The electron holography studies have been supported by DoE Grant No. DE-FG02-04ER46168. This work was performed in part at CINT, a U.S. Department of Energy, Office of Science User Facility. The research was funded in part by the Laboratory Directed Research and Development Program at LANL, an affirmative action equal opportunity employer operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under Contract No. DE-AC52-06NA25396. A portion of the research was also performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. We gratefully acknowledge the use of facilities within the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University, and we also thank Professor Karen Kavanagh at Simon Fraser University for microscope access and Professor Dragica Vasileska for helpful discussions. ",
year = "2013",
month = oct,
day = "7",
doi = "10.1063/1.4824775",
language = "English (US)",
volume = "103",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "15",
}