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Title: Rheology and stability kinetics of bare silicon nanoparticle inks for low-cost direct printing

Highly dispersed and stable silicon nanoparticles ink is formulated for its application in direct printing or printable electronics. These dispersions are prepared from free-standing silicon nanoparticles which are not capped with any organic ligand, making it suitable for electronic applications. Silicon nanoparticles dispersions are prepared by suspending the nanoparticles in benzonitrile or ethanol by using polypropylene glycol (PPG) as a binder. All the samples show typical shear thinning behavior while the dispersion samples show low viscosities signifying good quality dispersion. Such thinning behavior favors in fabrication of dense films with spin-coating or patterns with drop casting. The dispersion stability is monitored by turbiscan measurements showing good stability for one week. A low-cost direct printing method for dispersion samples is also demonstrated to obtain micro-sized patterns. Low electrical resistivity of resulting patterns, adjustable viscosity and good stability makes these silicon nanoparticles dispersions highly applicable for direct printing process.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. Advanced Materials Division, Korea Research Institute of Chemical Technology 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600 (Korea, Republic of)
  2. Advanced Materials Division, Korea Research Institute of Chemical Technology 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600 Korea and Department of Materials Science and Engineering, Korea University 5-1 Anam-Dong, Seongbuk-gu, Seoul 136-701 (Korea, Republic of)
  3. Department of Materials Science and Engineering, Korea University 5-1 Anam-Dong, Seongbuk-gu, Seoul 136-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22261685
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1569; Journal Issue: 1; Conference: 3. international advances in applied physics and materials science congress, Antalya (Turkey), 24-28 Apr 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DISPERSIONS; ELECTRIC CONDUCTIVITY; ETHANOL; FILMS; GLYCOLS; LIGANDS; NANOSTRUCTURES; PARTICLES; POLYPROPYLENE; SHEAR; SILICON; STABILITY; VISCOSITY