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Volume :35 Issue : 2 2008      Add To Cart                                                                    Download

Electrical Properties of Orange Dye Aqueous Solution

Auther : Kh. S. Karimov1, 2, I. Qazi2, Z. M. Karieva3, T. A. Khan2, I. Murtaza2

Kh. S. Karimov1, 2, I. Qazi2, Z. M. Karieva3, T. A. Khan2, I. Murtaza2

1Physical Technical Institute of  Academy of Sciences, Rudaki Ave, 33 , Dushanbe, 734025, Tajikistan. 2GIK Institute of Engineering Sciences and Technology, Topi, 23460, District Swabi, N.W.F.P., Pakistan. 3Tajik Technical University, Dushanbe, 734000, Tajikistan.

 

ABSTRACT

Organic semiconductor orange dye (OD) was dissolved in distilled water at room temperature and solutions were prepared with concentrations from 0.019 to 0.155 mol dm-3. The electrical conductivity of these aqueous solutions were investigated in a temperature range of 23 – 62oC, at a frequency of 5 – 1000 Hz , and a voltage ranging from 0 – 2.3 V. The length, width and height of the dip type conductance cell for measurement of the resistance were equal to 2, 1 and 1 cm respectively. It was found that the electrical conductivity of the OD solution increase with temperature, frequency and the applied voltage. Conductivity – concentration relationship showed a maximum conductivity at 0.05 mol dm-3. The conductivity mechanism can be explained on the basis of relaxation, electrophoretic effects and double layer formation at the electrode-solution interface. An equivalent circuit of the cell was developed and simulation studies of its impedance were carried out.

 

 Key words: concentration; conductivity; frequency; orange dye solution; organic semiconductor;  temperature;  voltage.

 

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