Tuning the electrical resistivity of conductive silver paste prepared by blending multi-morphologies and micro-nanometers silver powder

Abstract

As an important interconnection material in electronics, conductive silver paste has attract much research interest in chip packaging and printed circuit board due to its predominant properties like high conductivity and exible interconnection. In this paper, the silver nanoparticles, the silver sphere particles and ake silver powder are fabricated by various methods. Different proportions of silver powder are selected to prepare micro-silver paste and mn silver paste (fabricated by silver nanoparticles : sphere particles : ake silver powder=1:1:1). Compared to traditional silver paste (containing 80wt% silver), the electrical resistivity of micro-silver paste containing 66.67wt% silver and cured at 200℃ for 45min in air is about (3.31±0.73)×10 -5 Ω•cm when the ratio of sphere particle to ake silver powder is 1:1, the resistance of silver paste doesn't also increase dramatically after bending ten times. The addition of nano-silver particles can reduce the resistivity in lower temperature curing. The folding endurance of mn silver paste is comparable to that of micro-silver paste with sphere : ake=1:1.

Isotropic conductive paste for bioresorbable electronics

“…The resistivities of the Sn solder, Ag paste, and Ag epoxy in Fig. 1 f have been referenced in previous studies [ 28 , [40] , [41] , [42] ]. The impedance change of the W-paste and particle size were measured using a frequency response analyzer (FRA, Autolab FRA32 ​M, Netherlands).…”

Comparison of Metallization Schemes on Glass Dielectrics for X-Band Glass Antennas and Energy Harvesting

“…CSP is generally a kind of conductive ink, and it is mainly composed of conductive silver powder, binder, solvent and trace additives for performance improvement. The major component of conductive silver powder is nano-silver particles with a content 60–70% [ 23 ]. In case 4, the radiation structure and ground plane of the proposed glass antenna are made of CSP.…”

Fabrication of conductive silver paste recovered from leaching of waste catalyst using hydrochloric acid

“…The lowest value of the resistivity was comparable to the literature in which the electrically conductive silver paste was studied. 12,36,37 It is believed that electrically conductive paste can be one of the applications for the recovered Ag particles.…”

“…11 Ag is usually used as an electrode for devices due to its high corrosion resistance and electrical conductivity. Liu et al 12 fabricated silver paste that has an electrical resistivity of 3.31 ± 0.73 × 10 −5 Ω cm at 200 °C for 45 min in air. Currently, several scientific studies are underway to recover these metals by absorption from waste catalyst using simple but effective leaching methods.…”