کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491527 | 992353 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural, electrical and anisotropic properties of Tl4Se3S chain crystals
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural, electrical and anisotropic properties of Tl4Se3S chain crystals Structural, electrical and anisotropic properties of Tl4Se3S chain crystals](/preview/png/1491527.png)
چکیده انگلیسی
The structure, the anisotropy effect on the current transport mechanism and the space charge limited current in Tl4Se3S chain crystals have been studied by means of X-ray diffraction, electrical conductivity measurements along and perpendicular to the crystal's c-axis and the current voltage characteristics. The temperature-dependent electrical conductivity analysis in the region of 150-400Â K, revealed the domination of the thermionic emission of charge carriers over the chain boundaries above 210 and 270Â K along and perpendicular to the c-axis, respectively. Below these temperatures, the variable range hopping is dominant. At a consistent temperature range, the thermionic emission analysis results in conductivity activation energies of 280 and 182Â meV, along and perpendicular to the c-axis, respectively. Likewise, the hopping parameters are altered significantly by the conductivity anisotropy. The current-voltage characteristics revealed the existence of hole trapping state being located at 350Â meV above the valence band of the crystal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 44, Issue 10, October 2009, Pages 2009-2013
Journal: Materials Research Bulletin - Volume 44, Issue 10, October 2009, Pages 2009-2013
نویسندگان
A.F. Qasrawi, N.M. Gasanly,