Stabilization of mid-sized silicon nanoparticles by functionalization with acrylic acid

In: Nanoscale Research Letters, Jg. 7 (2012), S. 76
ISSN: 1556-276X
Zeitschriftenaufsatz / Fach: Maschinenbau
Fakultät für Ingenieurwissenschaften » Maschinenbau und Verfahrenstechnik » Institut für Verbrennung und Gasdynamik
We present an enhanced method to form stable dispersions of medium-sized silicon
nanoparticles for solar cell applications by thermally induced grafting of acrylic acid to the
nanoparticle surface. In order to confirm their covalent attachment on the silicon nanoparticles
and to assess the quality of the functionalization, X-ray photoelectron spectroscopy and
diffuse reflectance infrared Fourier spectroscopy measurements were carried out. The stability
of the dispersion was elucidated by dynamic light scattering and Zeta-potential measurements,
showing no sign of degradation for months.