Light emission from tungsten nanoparticles during laser-assisted chemical vapor deposition of tungsten

P. Heszler, L. Landström, M. Lindstam, J. O. Carlsson

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Recently we reported that phosphorescent light emission was observed upon irradiation of WF6/H2/noble gas (Ar, Kr, Ne, Xe) mixtures by ArF excimer laser [P. Heszler, P. Mogyorósi, and J.-O. Carlsson, J. Appl. Phys. 78, 5277 1995], originating from tungsten nanoparticles. In this work results of additional measurements on the same system are presented, and we conclude that the reported phosphorescence is a blackbody-like radiation. Taking into account the emissivity of the particles calculated on the base of the Mie theory, it was possible to determine the dependence of the temperature of the tungsten nanoparticles on time after the laser pulse by means of time-resolved spectroscopy. It is shown that surface reactions on the hot nanoparticles contribute significantly to the growth. The size distribution was found lognormal by transmission electron microscopy measurements.

Original languageEnglish
Pages (from-to)3967-3970
Number of pages4
JournalJournal of Applied Physics
Volume89
Issue number7
DOIs
Publication statusPublished - Apr 1 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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