In electrical properties, the dc conductivity and photoconductivity measurements have been made in vacuum evaporated thinlms of a-(Se70Te30)100. x(Se98Bi2)x system, in the temperature range (308355 K). It has been observed that dc conductivity andacti...
In electrical properties, the dc conductivity and photoconductivity measurements have been made in vacuum evaporated thinlms of a-(Se70Te30)100. x(Se98Bi2)x system, in the temperature range (308355 K). It has been observed that dc conductivity andactivation energy depend on the Bi concentration. Photocurrent dependence on incident radiation has also been observed whichfollow the power law (Iph / Fc). Transient photocurrent exhibits the non-exponential decay time. All these parameters show that theand crystallization temperatures is studied to calculate the activation energy for thermal relaxation and activation energy forcrystallization. The composition dependence of the activation energy for thermal relaxation and activation energy for crystallizationis discussed in terms of the structure of SeTeBi glassy system.. 2002 Elsevier Science B.V. All rights reserved.