کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1794172 | 1023692 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and photoluminescent investigation of h-BN-like layered material B4CN4
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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
Direct nitridation of B4C powder has been performed at temperatures ranging from 1600 to 2250 °C in a stream of nitrogen gas at ambient pressure. h-BN-like layered B4CN4 powders have been prepared by nitridation of B4C at 1800 °C. Carbon atoms were found to be not isolated in BN layers in B4CN4. A structural model with stacked h-BN and graphite layers in a ratio 8/1 for B4CN4 is excluded. The band gap of B4CN4 was estimated to be 4 eV from the low-temperature PLE spectrum, which is much different from that of BC2N (2 eV) and that of h-BN (6 eV). The low-temperature PL spectrum of B4CN4 revealed a dominant emission band at 3.55 eV.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 310, Issue 16, 1 August 2008, Pages 3869–3872
Journal: Journal of Crystal Growth - Volume 310, Issue 16, 1 August 2008, Pages 3869–3872
نویسندگان
F. Zhuge, Z.G. Ji, H.P. He, Z.Z. Ye, L.P. Zhu,