High-Temperature Leakage Improvement in Metal-Insulator-Metal Capacitors by Work-Function Tuning

K. C. Chiang, Albert Chin, C. H. Cheng, C. P. Chou, H. C. Pan, C. N. Hsiao, H. L. Hwang

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

Using low-cost and high work-function Ni, a low leakage current of 5 x 10–6 A/cm2 at 125 °C is obtained in a high 25-fF/μm2 -density SrTiO3 metal-insulator-metal (MIM) capacitor processed at 400 °C. This is approximately two orders of magnitude better than the same device using a TaN electrode, with added advantages of improved voltage and temperature coefficients of capacitance. This work-function tuning method also has merit for achieving both low thermal leakage and high overall κ value beyond previous laminate structure.

Original languageEnglish
Pages (from-to)235-237
Number of pages3
JournalIEEE Electron Device Letters
Volume28
Issue number3
DOIs
StatePublished - 7 Mar 2007

Keywords

  • Capacitor
  • Ni
  • high temperature
  • metal-insulator-metal (MIM)
  • thermal leakage

Fingerprint Dive into the research topics of 'High-Temperature Leakage Improvement in Metal-Insulator-Metal Capacitors by Work-Function Tuning'. Together they form a unique fingerprint.

  • Cite this