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Photoluminescence: Photoluminescent Porous Si/SiO 2 Core/Shell Nanoparticles Prepared by Borate Oxidation (Adv. Funct. Mater. 36/2014)
Author(s) -
Joo Jinmyoung,
Cruz Jose F.,
Vijayakumar Sanahan,
Grondek Joel,
Sailor Michael J.
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201470240
Subject(s) - materials science , passivation , photoluminescence , aqueous solution , porous silicon , nanoparticle , dissolution , silicon , quantum yield , borax , chemical engineering , boron , nanotechnology , luminescence , layer (electronics) , fluorescence , organic chemistry , metallurgy , optoelectronics , chemistry , engineering , raw material , physics , quantum mechanics
The preparation of luminescent core–shell nanoparticles of porous silicon is reported by M. J. Sailor and co‐workers on page 5688. The “shell” in these nanoparticles is a passivating silicon oxide layer, synthesized by partial oxidation of the quantum‐confined crystalline silicon skeleton in an aqueous solution of sodium tetraborate (borax). Control of the chemistry of the passivation layer is found to be crucial to maximize the quantum yield and to control the rate of aqueous dissolution of the resulting nanoparticles.