Dielectric and interface characteristics of SrTiO3 with a MIS structure

  • Jian Hua Ma*
  • , Jing Lan Sun
  • , Xiang Jian Meng
  • , Tie Lin
  • , Fu Wen Shi
  • , Jun Hao Chu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

SrTiO3(STO) films were deposited onto the p-type Si substrates by metal-organic decomposition (MOD) technique. The dielectric and interface characteristics of STO with a metal-insulator-semiconductor (MIS) structure were investigated. The results showed that the dielectric constant was about 105 and the dissipation factor was lower than 0.01 for our STO films at a frequency of 10 kHz. The excellent dielectric properties were attributed to the polycrystalline structure with good crystallinity. The fixed charge density Nf and the interface-trap density Dit were calculated to be about 1.5×1012cm-2 and (1.4-3.5)×1012cm-2 eV-1, respectively. Both Nf and Dit were mainly connected with an interface layer with low dielectric constant formed at the interface of Si/STO.

Original languageEnglish
Pages (from-to)1390-1395
Number of pages6
JournalWuli Xuebao/Acta Physica Sinica
Volume54
Issue number3
DOIs
StatePublished - Mar 2005
Externally publishedYes

Keywords

  • Dielectric characteristics
  • MIS structure
  • Si/STO interface
  • SrTiO films

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