Abstract
The d.c. conductivity of thiourea and tris (thiourea) copper sulphate have been measured as a function of temperature, including their phase transition temperatures. The thermal activation energy values obtained showed that the two compounds behaved as semiconducting materials. The mechanism of the conductivity was interpreted in the light of their molecular spectroscopic data in the infrared, ultraviolet and visible regions. The semiconducting properties of the ligand (TU) arise as a result of electron-delocalization via π-bond formation (C=NH, C=NH2 +), the hydrogen transfer and the highly polar resonance hybride structural formation, and are altered by the copper ion in copper (TU) complex. The a.c. conductivity was measured at room temperature. © 1999 Kluwer Academic Publishers
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El-Sayed, B.A., Sallam, M.M. Temperature and frequency dependent electrical transport in thiourea and tris (thiourea) copper (l) sulphate. Journal of Materials Science: Materials in Electronics 10, 63–66 (1999). https://doi.org/10.1023/A:1008983225361
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DOI: https://doi.org/10.1023/A:1008983225361