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Diamond cubic Sn-rich nanocrystals: synthesis, microstructure and optical properties

Ragan, R. and Atwater, H. A. (2005) Diamond cubic Sn-rich nanocrystals: synthesis, microstructure and optical properties. Applied Physics A: Materials Science and Processing, 80 (6). pp. 1335-1338. ISSN 0947-8396. doi:10.1007/s00339-004-3163-3.

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Diamond cubic Sn-rich nanocrystals were fabricated with radii less than 20 nm by post-growth annealing at T=750 °C of Sn_xGe_(1-x) alloys grown on Ge(001) by molecular beam epitaxy. The crystal phase of the Sn-rich nanocrystals was determined to be diamond cubic from Fourier transform analysis of high-resolution transmission electron microscopy images. Optical transmittance of these Sn_xGe_(1-x)/Ge (001) films demonstrated changes in optical absorption that can be attributed to absorption from the nanocrystals. The energy bandgap was measured to be 0.45 eV for nanocrystals arrays in Ge with a mean diameter of 32 nm.

Item Type:Article
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URLURL TypeDescription ReadCube access
Ragan, R.0000-0002-8694-5683
Atwater, H. A.0000-0001-9435-0201
Additional Information:© Springer-Verlag 2005. Received: 15 September 2004 / Accepted: 23 November 2004/ Published online: 11 March 2005. This work was supported by the National Science Foundation. One of us (RR) acknowledges support in the form of an Intel fellowship. C.C. Ahn is gratefully acknowledged for illuminating scientific discussions of electron microscopy.
Funding AgencyGrant Number
Subject Keywords:Microstructure; Fourier; Transmission Electron Microscopy; Fourier Transform; Optical Property
Issue or Number:6
Classification Code:PACS 68.37.Lp; 78.67.Hc; 81.07.Ta; 81.16.Dn; 68.65.Hb
Record Number:CaltechAUTHORS:20190909-133030958
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Official Citation:Ragan, R. & Atwater, H. Appl. Phys. A (2005) 80: 1335.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98520
Deposited By: George Porter
Deposited On:09 Sep 2019 21:08
Last Modified:16 Nov 2021 17:39

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