کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9567748 | 1503720 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Room temperature near-field photoluminescence of zinc-blend and wurtzite ZnO structures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Room temperature near-field photoluminescence of zinc-blend and wurtzite ZnO structures Room temperature near-field photoluminescence of zinc-blend and wurtzite ZnO structures](/preview/png/9567748.png)
چکیده انگلیسی
Near-field photoluminescence (PL) was measured from ZnO film, composed of nanocrystallites with zinc-blend (ZB) and wurtzite (W) structures, on a sapphire (0Â 0Â 0Â 1) substrate at room temperature (RT). The size of nanocrystallites was in the range of 30-50Â nm. Using a fiber probe with aperture size of 80Â nm, two near-field emission peaks attributed to one ZB and one W structures were observed. The difference in the emission energies was 0.10Â eV close to the calculated bandgap difference between ZB and W structures. The intensity of emission peak from ZB structure with lower energy was stronger than that from W structure, which is supposed to be resulted from the quenched excitonic effect of W structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 239, Issues 3â4, 31 January 2005, Pages 394-397
Journal: Applied Surface Science - Volume 239, Issues 3â4, 31 January 2005, Pages 394-397
نویسندگان
G.H. Lee, T. Kawazoe, M. Ohtsu,