I−V relations in semiconductors with ionic motion
- 144 Downloads
Semiconductors with mobile donors and acceptors are mixed-ionic-electronic-conductors, MIECs, which exhibit peculiar electronic (electron/hole), Ie, current-voltage relations. This is a result of the redistribution of the ions under the applied electrical potential. MIECs are usually ionic materials which exhibit relative low electron/hole mobilities as compared to the materials used in the semiconductor industry. However, thin layers of MIECs exhibit a low resistance and fast response and become of increasing interest.
The Ie−V relations are discussed for a few typical examples. It is shown that they depend on the energy band gap as when it is large, the semiconductor is either p-type or n-type. The Ie−V relations depend also on the nature of the electrodes, whether blocking for ion exchange or not. Experimental results for Cu2O are presented and analyzed using one of the models discussed.
KeywordsI-V relations MIEC Semiconductor PLEC Cu2O
Unable to display preview. Download preview PDF.
- 5.Y. Tsur and I. Riess, Phys. Rev., B 60, 8138 (1999).Google Scholar
- 11.I. Riess, CRC Handbook of Solis State Electrochemistry, edited by P.J. Gellings and H.J.M. Boumeester (CRC Press, Inc. 1997) p. 223.Google Scholar
- 13.I. Riess, Phys. Rev., B35, 5740 (1987).Google Scholar
- 15.C. Wagner, Z. Elektrochem., 60, 4 (1960).Google Scholar
- 18.I. Riess, Z. Phys. Chem., 219, 1 (2005).Google Scholar