Abstract
An Ag/Pc/p-Si Schottky barrier (SB) diode was fabricated. The current-voltage (I-V), capacitance-voltage (C-V) and conductance-voltage (G-V) measurements were carried out to determine the characteristic parameters such as barrier height, ideality factor and series resistance of the SB diode. The non-linear behavior of ln (I) vs. ln (V) and ln (I/V) vs. V1/2 plots indicated that the thermoionic emission theory can be applied to evaluate junction parameters for the investigated SB diode rather than space-charge limited conduction (SCLC) mechanism and bulk-limited PooleFrenkel emission. The bulk doping concentration NB and fixed oxide charges Nf was determined from the measured high frequency C-V curve and was found to be 9.5 × 1014 cm-3 and 2.3 × 1013 cm-2, respectively. The values of barrier height obtained from Norde's function were compared with those from the forward bias current-voltage characteristic, and it was seen that there was a good agreement between barrier heights from both methods.
| Original language | English |
|---|---|
| Pages (from-to) | 855-860 |
| Number of pages | 6 |
| Journal | Journal of Porphyrins and Phthalocyanines |
| Volume | 16 |
| Issue number | 7-8 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
Funding
This work was supported by the Department of Science and Technology (DST) and National Research Foundation (NRF), South Africa through DST/NRF South African Research Chairs Initiative for Professor of Medicinal Chemistry and Nanotechnology, the Research Fund of the Yildiz Technical University (Project No. 24-01-02-12) and Rhodes University.
| Funders | Funder number |
|---|---|
| National Research Foundation | |
| Rhodes University | |
| Department of Science and Technology, Ministry of Science and Technology, India | |
| Yildiz Teknik Üniversitesi | 24-01-02-12 |
Keywords
- MIS structure
- ball type MgPc
- fixed oxide charge
- interface trap
- nonperiferally position