Material and CO sensing properties of SnO2 thick films with sol stability time

Bo Seok Park*, Woo Sun Lee, Kwang Joon Hong, Dong Charn Shin, Enrico Traversa, Ho Gi Kim, Jin Seong Park

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The material and electrical properties of SnO2 fine particles were investigated as a function of aging times and temperature. A sol-gel process was used to synthesize ultra-fine particles of SnO2 and tin chloride dihydrate and ethanol were chosen as raw materials. The grain size after firing at 700°C for 30 min is about 25nm and the size distribution is very narrow. SnO2 thick films were fabricated by a screen-printing technique on an alumina substrates. A linear change in electrical conductance of SnO2 below 200°C and the constant conductance in the region of 200°C to 450°C are observed. It finally shows intrinsic behavior above 450°C.

Original languageEnglish (US)
Pages (from-to)415-418
Number of pages4
JournalKey Engineering Materials
StatePublished - 2003
Externally publishedYes
EventAdvanced Ceramics and Composites - Shanghai, China
Duration: Nov 19 2002Nov 22 2002


  • CO Sensor
  • Material Property
  • Sol-Gel Process
  • Thick Films
  • Tin Oxide

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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