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Nano/micro silver powders for electronic materials

S. GAVRILIU1,* , M. LUNGU1, F. GRIGORE1, D. DONESCU2, M. GHIUREA2

Affiliation

  1. National Institute for Research and Development in Electrical Engineering INCDIE ICPE-CA Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania
  2. National Research & Development Institute for Chemistry and Petrochemistry - ICECHIM Splaiul Independentei no. 202, 060021 Bucharest, Romania

Abstract

The paper presents a new type of structural materials, namely silver nanoparticles deposited on the silver microcrystalline particles, designed to obtain some conductive inks or pastes. It is known that beside optical, thermo-catalytic, photo-catalytic and bactericidal properties, the silver nanoparticles have a low melting temperature and some exceptional sintering characteristics against the bulk material. The sintering of these silver nanoparticles begins at 150 °C, while this process starts in the range of 650…700 °C even for very fine microcrystalline powders. We developed a chemical method for obtaining silver powders with lowered melting point and improved sinterability. The powders were characterized by chemical, UV-VIS, DLS, SEM and TEM analyses..

Keywords

Silver nanopowders, Inks, Pastes, UV-VIS, DLS, SEM, TEM.

Submitted at: Oct. 31, 2008
Accepted at: Dec. 10, 2008

Citation

S. GAVRILIU, M. LUNGU, F. GRIGORE, D. DONESCU, M. GHIUREA, Nano/micro silver powders for electronic materials, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 12, pp. 3247-3250 (2008)