Platinum assisted vapor-liquid-solid growth of er-si nanowires and their optical properties

Myoung Ha Kim, Il Soo Kim, Yong Hee Park, Tae Eon Park, Jung H. Shin, Heon-Jin Choi

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 SiCl 4 and ErCl 4 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 Er 3+ 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.

Original languageEnglish
Pages (from-to)286-290
Number of pages5
JournalNanoscale Research Letters
Volume5
Issue number2
DOIs
Publication statusPublished - 2010 Feb 1

Fingerprint

Platinum
Nanowires
platinum
nanowires
Optical properties
Vapors
vapors
optical properties
Erbium
Liquids
liquids
Silicon
catalysts
erbium
Catalysts
optical activity
silicon
exclusion
Silicon Dioxide
Gold

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kim, Myoung Ha ; Kim, Il Soo ; Park, Yong Hee ; Park, Tae Eon ; Shin, Jung H. ; Choi, Heon-Jin. / Platinum assisted vapor-liquid-solid growth of er-si nanowires and their optical properties. In: Nanoscale Research Letters. 2010 ; Vol. 5, No. 2. pp. 286-290.
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Platinum assisted vapor-liquid-solid growth of er-si nanowires and their optical properties. / Kim, Myoung Ha; Kim, Il Soo; Park, Yong Hee; Park, Tae Eon; Shin, Jung H.; Choi, Heon-Jin.

In: Nanoscale Research Letters, Vol. 5, No. 2, 01.02.2010, p. 286-290.

Research output: Contribution to journalArticle

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