Observation of Meyer–Neldel rule in thermally activated Poole–Frenkel photoconduction in a-Se70Te30−𝑥Cd𝑥 thin films

Pramana

A Kumar¹  V S Kushwaha³  N Mehta2² 

[1] Department of Physics, Harcourt Butler Technological Institute, Kanpur 208 002, India$$;Department of Physics, Banaras Hindu University, Varanasi 221 005, India$$;Department of Physics, Kanpur Institute of Technology, Kanpur 208 007, India$$

关键词: Chalcogenide glasses;    Poole–Frenkel conduction;    Meyer–Neldel rule.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

In the present paper, we report the compensation effect on photoconductivity of thin films of Se70Te30−𝑥Cd𝑥 (𝑥 = 2, 4, 6) alloys for high field conduction. Steady state photoconductivity measurements have been made in thin films for different electric fields. The photoconduction was found to be ohmic at low fields and Poole–Frenkel type at high fields. Meyer–Neldel rule (MN rule) for the pre-exponential factor (𝜎ph)0 and activation energy (𝛥 𝐸ph) of photoconduction in thin films of Se70Te30−𝑥Cd𝑥 is observed in the present study.

【 授权许可】

Unknown