A novel one-pot room-temperature synthesis route to produce very small photoluminescent silicon nanocrystals

Oscar A. Douglas-Gallardo, Maxi A. Burgos-Paci, Rubén Mendoza-Cruz, Karl G. Putnam, M. Josefina Arellano-Jiménez, Miguel José-Yacamán, Marcelo M. Mariscal, Vicente A. Macagno, Cristián G. Sánchez, Manuel A. Pérez

Research output: Contribution to journalArticlepeer-review

Abstract

A novel strategy to synthesize photoluminescent silicon nanocrystals (SiNCs) from a reaction between tetraethylorthosilicate (TEOS) and trimethyl-hexadecyl-ammonium borohydride (CTABH4) in organic solvent is presented. The formation reaction occurs spontaneously at room temperature in homogeneous phase. The produced silicon nanocrystals are characterized by using their photoluminescent properties and via HRTEM. In addition, theoretical calculations of the optical absorption spectrum of silicon quantum dots in vacuum with different sizes and surface moieties were performed in order to compare with the experimental findings. The new chemical reaction is simple and can be implemented to produce silicon nanocrystal with regular laboratory materials by performing easy and safe procedures. [Figure not available: see fulltext.].

Original languageEnglish (US)
Article number85
JournalJournal of Nanoparticle Research
Volume20
Issue number3
DOIs
StatePublished - Mar 1 2018
Externally publishedYes

Keywords

  • Colloids
  • Photoluminescent silicon nanocrystals
  • Silicon quantum dots
  • Synthesis

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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