کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1648742 1007563 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of metallic Zn microprisms, their growth mechanism and PL properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis of metallic Zn microprisms, their growth mechanism and PL properties
چکیده انگلیسی

Novel metallic Zn hexagonal hollow microprisms have been synthesized by a simple thermal evaporation technique using NH3 as a carrier gas under atmospheric pressure. As-prepared hollow microprisms were characterized using X-ray diffraction, energy dispersive X-ray spectroscopy, scanning electron microscopy and transmission electron microscopy. The hollow microprisms collected on silicon substrate are found to be 3–7 μm long with diameter in the range 900–950 nm. A vapour–solid (VS) process based growth mechanism has been proposed for the formation of hexagonal Zn microprisms grown along (0001) basal plane in [0001] direction. Photoluminescence (PL) emission spectrum of zinc microprisms at room temperature exhibited a very prominent peak at 384 nm owing to the radiative recombination of electrons in s, p conduction band near Fermi surface and the holes in the d bands generated by optical excitation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 64, Issue 20, 31 October 2010, Pages 2273–2276
نویسندگان
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