کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1810665 | 1025567 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification of a metastable state of the VZnH2 defect in ZnO
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Identification of a metastable state of the VZnH2 defect in ZnO Identification of a metastable state of the VZnH2 defect in ZnO](/preview/png/1810665.png)
چکیده انگلیسی
An infrared absorption study of the Zn vacancy passivated by two hydrogen atoms (VZnH2) is reported. The ground state of the defect VZnH2 consists of the inequivalent O–H bonds, which are aligned parallel and perpendicular to the c-axis, respectively. A metastable state of the defect was detected with two equivalent O–H bonds oriented perpendicular to the c-axis (VZnH2⁎). VZnH2⁎ has two local vibration modes at 3329.0 and 3348.4 cm−1 which are the antisymmetric and symmetric combinations of the two O–H stretch modes. The metastable state of the defect is 75±9 meV above the ground state of VZnH2. An activation energy of 0.96±0.12 eV for the transition from metastable to the ground state was determined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 15, 1 August 2012, Pages 2919–2922
Journal: Physica B: Condensed Matter - Volume 407, Issue 15, 1 August 2012, Pages 2919–2922
نویسندگان
D. Bastin, E.V. Lavrov, J. Weber,