Abstract
The electrical conductivity, thermoelectric power (TEP), and optical properties of organo-soluble polyaniline doped with HCl have been investigated. The electrical conductivity and TEP of the sample increase with increasing temperature. The electrical conductivity and TEP results of the polymer suggest that it is a p-type semiconductor. The fundamental absorption edge in the polymer is formed by the direct allowed transitions, and the optical band gap value was found to be 2.79 eV. The absorption spectra for an acidic solution of the polymer indicate two new absorption bands, which are due to polaron formation. The polaron bands are responsible for the conductivity of the polymer. The TEP results indicate that the conductivity mechanism of the polymer is controlled by the large polaron hopping model.
| Original language | English |
|---|---|
| Pages (from-to) | 930-934 |
| Number of pages | 5 |
| Journal | Journal of Electronic Materials |
| Volume | 37 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 2008 |
Funding
This work was supported by the Turkish Scientific and Technological Research Council of TURKEY (TUBITAK) (Project Number 105T137). The authors wish to thank the Scientific and Technological Research Council of Turkey.
| Funders | Funder number |
|---|---|
| TUBITAK | 105T137 |
| Turkish Scientific and Technological Research Council of TURKEY |
Keywords
- Organic semiconductor
- Polyaniline
- Thermoelectric power