کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10706223 | 1023382 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A systematic study of the synthesis of monolayer tungsten diselenide films on gold foil
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report a systematic study of the synthesis of large-area monolayer WSe2 on gold foil by controlling the growth temperature and the partial pressure of hydrogen during chemical vapor deposition. The gold surface causes surface-mediated growth to form monolayer WSe2 films. The amount of the tungsten source is controlled by adjusting the partial pressure of hydrogen, which plays a role in the reduction of WO3 (solid phase) into WO3âx (vapor phase). The coverage of monolayer WSe2 can be effectively controlled by changing either the partial pressure of hydrogen or the growth temperature at a fixed growth time under an Se-rich atmosphere, resulting in 100% coverage of the WSe2 film. The crystallinity and thickness uniformity are characterized by Raman spectroscopy, photoluminescence, and transmission electron microscopy. This characterization reveals that the quality of the WSe2 film is comparable to mechanically-exfoliated monolayer WSe2 and possesses good thickness uniformity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 16, Issue 9, September 2016, Pages 1216-1222
Journal: Current Applied Physics - Volume 16, Issue 9, September 2016, Pages 1216-1222
نویسندگان
Seok Joon Yun, Soo Min Kim, Ki Kang Kim, Young Hee Lee,