NDLI: Platinum Assisted Vapor–Liquid–Solid Growth of Er–Si Nanowires and Their Optical Properties

Content Provider	PubMed Central
Author	Kim, Myoung-ha Kim, Il-soo Park, Yong-hee Park, Tae-eon Shin, Jung H. Choi, Heon-jin
Copyright Year	2009
Abstract	We report the optical activation of erbium coated silicon nanowires (Er–SiNWs) grown with the assist of platinum (Pt) and gold (Au), respectively. The NWs were grown on Si substrates by using a chemical vapor transport process using SiCl4 and ErCl4 as precursors. Pt as well as Au worked successfully as vapor–liquid–solid (VLS) catalysts for growing SiNWs with diameters of ~100 nm and length of several micrometers, respectively. The SiNWs have core–shell structures where the Er-crystalline layer is sandwiched between silica layers. Photoluminescence spectra analyses showed the optical activity of SiNWs from both Pt and Au. A stronger Er3+ luminescence of 1,534 nm was observed from the SiNWs with Pt at room- and low-temperature (25 K) using the 488- and/or 477-nm line of an Ar laser that may be due to the uniform incorporation of more Er ions into NWs with the exclusion of the formation of catalyst-induced deep levels in the band-gap. Pt would be used as a VLS catalyst for high performance optically active Er–SiNWs.
Related Links	http://dx.doi.org/10.1007/s11671-009-9477-5
Ending Page	290
Page Count	5
Starting Page	286
File Format	PDF
ISSN	19317573
e-ISSN	1556276X
Journal	Nanoscale Research Letters
Issue Number	2
Volume Number	5
Language	English
Publisher	Springer
Publisher Date	2010-02-01
Access Restriction	Open
Rights Holder	Springer
Subject Keyword	Materials Science(all) Condensed Matter Physics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics

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