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 language | English |
|---|---|
| Pages (from-to) | 1390-1395 |
| Number of pages | 6 |
| Journal | Wuli Xuebao/Acta Physica Sinica |
| Volume | 54 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2005 |
| Externally published | Yes |
Keywords
- Dielectric characteristics
- MIS structure
- Si/STO interface
- SrTiO films