To provide a silver fine particle suitable as a raw material for a conductive paste and the like which can be calcinated at a low temperature, the silver fine particle having an average particle size of 30-100 nm and not presenting a compound consisting of an ethyl group, a propyl group, or a butyl group in a GC-MS analysis.
An alcohol solution of an amine complex of silver nitrate prepared using silver nitrate and one or more types of aliphatic amine which is hydrosoluble or water soluble and which has a carbon number of 2-4 is added to water or water-alcohol mixture solvent containing ascorbic acid or erythorbic acid dissolved therein for reduction-precipitation, and resulting silver fine particle is separated, washed until its filtrate has 50 μS/cm or lower electric conductivity, and then vacuum-dried at a temperature of 30°C or lower, whereby the silver fine particle having the average particle size (DSEM) of 30-100 nm and not presenting the compound consisting of an ethyl group, a propyl group, or a butyl group in the GC-MS analysis can be obtained.
OSUGI MINEKO
IIDA TETSUJI
MORII HIROKO
HAYASHI KAZUYUKI
| JP2009144197A | 2009-07-02 | |||
| JP2008127679A | 2008-06-05 |
| WO2010001496A1 | 2010-01-07 |
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