AC CONDUCTIVITY OF Se85-x Te15Gex GLASSES

作者：Kumar Anil; Lal Manohar; Sharma Kanchan; Goyal Navdeep^*

来源：Chalcogenide Letters, 2013, 10(2): 73-79.

• Chalcogenides
• Defect states
• Hopping conduction
• Simple pairs

Frequency and temperature dependent ac conductivity studies of Se85-x Te15Gex (x= 0, 2,6,10, 15) glasses have been reported. Results indicate that Se-83 Te-15 Ge-2 obeys well established relation sigma(ac)alpha omega(s), frequency exponent s is found to decrease with increase in temperature and results have been explained as the basis of correlated barrier hopping (CBH) model and numerical calculations agree well with experimental results. But a different type of behavior has been observed for Se85-x Te15Gex(x = 6, 10, 15). Distinct peaks have been observed in the plots of temperature dependence of ac conductivity for Se85-x Te15Gex (x = 10, 15). The results have been interpreted using CHB and %26quot;simple pair%26quot; model. Ge introduced localized states deep in the band gap and form simple pairs. Theoretical results obtained by using these models have been found to be in agreement with experimental results.

• 出版日期2013-2