کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1491904 | 992363 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of oxygen pressure on elastic strain and excitonic transition energy of ZnO epilayers prepared by pulsed laser deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Influence of oxygen pressure on elastic strain and excitonic transition energy of ZnO epilayers prepared by pulsed laser deposition Influence of oxygen pressure on elastic strain and excitonic transition energy of ZnO epilayers prepared by pulsed laser deposition](/preview/png/1491904.png)
چکیده انگلیسی
High quality ZnO epilayers (χmin ∼ 10%) were prepared on Al2O3 (0 0 0 1) substrates at a temperature of 750 °C by pulsed laser deposition (PLD) with oxygen pressure of 0.015, 0.15, 1.5, and 15 Pa. The best crystalline quality and strongest intensity of UV photoluminescence were observed on ZnO layer with oxygen pressure of 15 Pa. It is probable due to the higher oxygen pressure lessens oxygen deficiency in the film. The tetragonal distortion eT, which is caused by elastic strain in the epilayer, was determined by Rutherford backscattering/channeling. It reduces as a whole (from 0.93 to 0.65%) with the increase of oxygen pressure from 0.015 to 15 Pa and the excitonic transition energy simultaneously shows a weak blue shift.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 43, Issue 12, 1 December 2008, Pages 3327–3331
Journal: Materials Research Bulletin - Volume 43, Issue 12, 1 December 2008, Pages 3327–3331
نویسندگان
Kun Wang, Zhibo Ding, Shude Yao, Hui Zhang, Songlin Tan, Fei Xiong, Pengxiang Zhang,