Conductive silver films formed from nano-sized silver powders prepared by flame spray pyrolysis

Hye Young Koo, Jang Heui Yi, Jung Hyun Kim, You Na Ko, Dae Soo Jung, Yun Chan Kang, Jong Heun Lee

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Nano-sized silver powders were directly prepared by high-temperature flame spray pyrolysis; an ultrasonic spray generator was used in the process. The silver powders were nanometer sized and had a spherical shape; further, they did not show a tendency to form aggregates. Their mean size was 26 nm. The mean crystallite size measured using Scherrer's equation was 26 nm. Conductive silver films were formed from the nano-sized silver powders. The powders sintered completely at a firing temperature of 400 °C. Conductive silver films fired at temperatures between 400 and 500 °C had a dense structure and similar thicknesses. The specific resistances of conductive silver films fired at temperatures of 400, 450, and 500 °C were 8.3, 3.6, and 2.7 μΩ cm. On the other hand, a conductive silver film formed from submicron-sized silver powders had a high specific resistance of 19 μΩ cm at a firing temperature of 450 °C.

Original languageEnglish
Pages (from-to)959-963
Number of pages5
JournalMaterials Chemistry and Physics
Volume124
Issue number2-3
DOIs
Publication statusPublished - 2010 Dec 1

Bibliographical note

Funding Information:
This study was supported by a grant ( M2009010025 ) from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy (MKE), Republic of Korea . This study was supported by Seoul R & BD Program (WR090671). The work of J.-H. Lee was supported by KOSEF NRL program (no. R0A-2008-000-20032-0).

Keywords

  • Chemical synthesis
  • Electrical conductivity
  • Glasses
  • Metals

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

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