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Title: Size control, quantum confinement, and oxidation kinetics of silicon nanocrystals synthesized at a high rate by expanding thermal plasma

Abstract

The growth mechanism of silicon nanocrystals (Si NCs) synthesized at a high rate by means of expanding thermal plasma chemical vapor deposition technique are studied in this letter. A bimodal Gaussian size distribution is revealed from the high-resolution transmission electron microscopy images, and routes to reduce the unwanted large Si NCs are discussed. Photoluminescence and Raman spectroscopies are employed to study the size-dependent quantum confinement effect, from which the average diameters of the small Si NCs are determined. The surface oxidation kinetics of Si NCs are studied using Fourier transform infrared spectroscopy and the importance of post-deposition passivation treatments of hydrogenated crystalline silicon surfaces are demonstrated.

Authors:
; ;  [1]
  1. Photovoltaic Materials and Devices (PVMD) Laboratory, Delft University of Technology, P.O. Box 5031, 2600 GA Delft (Netherlands)
Publication Date:
OSTI Identifier:
22402502
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHEMICAL VAPOR DEPOSITION; FOURIER TRANSFORM SPECTROMETERS; HYDROGENATION; NANOSTRUCTURES; OXIDATION; PASSIVATION; PHOTOLUMINESCENCE; RAMAN SPECTROSCOPY; SILICON; SURFACES; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Han, Lihao, E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl, Zeman, Miro, and Smets, Arno H. M., E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl. Size control, quantum confinement, and oxidation kinetics of silicon nanocrystals synthesized at a high rate by expanding thermal plasma. United States: N. p., 2015. Web. doi:10.1063/1.4921760.
Han, Lihao, E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl, Zeman, Miro, & Smets, Arno H. M., E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl. Size control, quantum confinement, and oxidation kinetics of silicon nanocrystals synthesized at a high rate by expanding thermal plasma. United States. doi:10.1063/1.4921760.
Han, Lihao, E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl, Zeman, Miro, and Smets, Arno H. M., E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl. Mon . "Size control, quantum confinement, and oxidation kinetics of silicon nanocrystals synthesized at a high rate by expanding thermal plasma". United States. doi:10.1063/1.4921760.
@article{osti_22402502,
title = {Size control, quantum confinement, and oxidation kinetics of silicon nanocrystals synthesized at a high rate by expanding thermal plasma},
author = {Han, Lihao, E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl and Zeman, Miro and Smets, Arno H. M., E-mail: hanlihao@gmail.com, E-mail: A.H.M.Smets@tudelft.nl},
abstractNote = {The growth mechanism of silicon nanocrystals (Si NCs) synthesized at a high rate by means of expanding thermal plasma chemical vapor deposition technique are studied in this letter. A bimodal Gaussian size distribution is revealed from the high-resolution transmission electron microscopy images, and routes to reduce the unwanted large Si NCs are discussed. Photoluminescence and Raman spectroscopies are employed to study the size-dependent quantum confinement effect, from which the average diameters of the small Si NCs are determined. The surface oxidation kinetics of Si NCs are studied using Fourier transform infrared spectroscopy and the importance of post-deposition passivation treatments of hydrogenated crystalline silicon surfaces are demonstrated.},
doi = {10.1063/1.4921760},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 21,
volume = 106,
place = {United States},
year = {2015},
month = {5}
}