کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595833 | 1515725 | 2006 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electrical conduction and optical properties of amorphous (Sb2Se3)100−xSnx thin films Electrical conduction and optical properties of amorphous (Sb2Se3)100−xSnx thin films](/preview/png/1595833.png)
The variation of DC electrical conductivity and the optical properties of thermally evaporated aa- (Sb2Se3)100−xSnx thin films with temperature have been studied. It is found that the thermal activation energy decreases, while the optical gap first increases (up to x=1x=1) and then decreases, with the increase in Sn content. These results have been explained by taking into consideration the structural modifications induced by the incorporation of Sn into the parent alloy. The variation in the conductivity prefactor (σo)(σo) with Sn addition indicates a change in the dominant conduction transport mechanism from extended states to localized states. An experimental correlation between the activation energy and the pre-exponential factor has been observed, indicating the validity of Meyer–Neldel rule in the studied samples.
Journal: Solid State Communications - Volume 140, Issues 11–12, December 2006, Pages 525–528