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A New Route to Colloidal, UV‐Luminescent Silicon Nanoparticles
Author(s) -
Klingbeil Christian,
Klingebiel Uwe
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900195
Subject(s) - luminescence , materials science , nanoparticle , silicon , nanotechnology , anhydrous , chemical engineering , colloid , chemistry , optoelectronics , organic chemistry , engineering
For the last decade, there has been a growing interest in silicon nanoparticles smaller than 5 nm in diameter because of their luminescence properties. Here, we present a new approach for the fabrication of such particles. Starting with larger nanoparticles from industrial production, a combined treatment with anhydrous hydrogen fluoride and 1‐alkenes leads to alkylated Silicon nanoparticles in the size range necessary for luminescence. In nonpolar solvents, these particles are colloids, which do not precipitate for a long time. During one‐pot reactions, the size decrease of the crystalline silicon core is mediated by the intermediary presence of H 2 O 2 . In this paper, we describe the reaction conditions of this new path to colloidal silicon nanoparticles and discuss their structure as seen in TEM images, their surface chemistry and luminescence properties.