Semi-Conductors with Mobile Ions Show a New Type of I-V Relations
Tóm tắt
Semi-conductors with mobile acceptors or donors show a new type of I-V relations. This paper presents experimental results for solid state devices based on copper oxide, found to be Cu2O, which exhibit these I-V relations. The cells examined are Cu| Cu2O| In and Cu| Cu2O| Ag and similar ones tested at room temperature. The measured I-V relations are different from those reported for the same type of cells in the past, which were explained to be fixed by a Schottky barrier Cu| Cu2O. We find that the I-V relations relax over a long time which we claim is due to ion redistribution. The new I-V relations can then be explained by assuming that Cu2O is a mixed-ionic-electronic-conductor and adopting a theory developed by us in the past and modified to be applicable to the relevant defect model here. In this case the contribution of Schottky barriers is insignificant.
Tài liệu tham khảo
I. Riess, Solid State Ionic, 69, 43 (1994).
L.O. Grondahl and P.H. Geiger, J. Am. Inst. Electr. Eng., 46, 215 (1927).
L.O. Grondahl, Rev. Mod. Phys., 5, 141 (1933).
R.E. Ward, Light Metals, 7, 276 (1944).
I.R. Smith, Metal Cleaning and Finishing, Jan, 10 (1938).
I.R. Smith, Westinghouse Engineer, Aug, 85 (1943).
Gmelin Handbook (1963), Vol. {60}, p. 89.
T. Suehiro, T. Sasaki and Y. Hiratate, This Solid Films, 383, 318 (2001).
J. Bloem, Philips Res. Repts., 13, 167 (1958).
A.A. Berezin and F.L. Weichman, Solid State Commun., 37, 157 (1981).
L.C. Olsen, F.W. Addis and W. Miller, Sol. Cells, 7, 247 (1982–83).
A.E. Rakhshani, Solid State Electronics, 29, 7 (1986).
G.J. Wang and F.L. Weichman, Can. J. Phys., 60, 1648 (1982).
A.A. Berezin and F.L. Weichman, Phys. Stat. Sol. (a) 71, 265 (1982).
Z. Rosenstock and I. Riess, Solid State Ionics, 136/137, 921 (2000).
O. Porat and I. Riess, Solid State Ionics, 81, 29 (1995).
I. Riess, J. Rutman and Z. Rosenstock, J. Am. Ceram. Soc., 84, 2895 (2001).
I. Riess, J. Phys. Chem. Solids, 47, 129 (1986).
I. Riess, Z. Phys. Chem., 219, 1 (2005).
F.A. Kröger, The Chemistry of Imperfect Crystals, 2nd ed. (North-Holland Publ. Comp., 1974), p. 14.
I. Riess, CRC Handbook of Solid State Electrochemistry, edited by P.J. Gellings and H.J.M. Bouwmeester (CRC Press, Inc. 1997), p. 223.