کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8020979 | 1517266 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of dumbbell shaped ZnO crystals using one-pot hydrothermal method and their characterisations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
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چکیده انگلیسی
A highly monodispersed dumbbell like ZnO mesostructure has been synthesized by a one pot surfactant assisted hydrothermal method using zinc acetate dihydrate as a precursor and dodecylamine as a surfactant. The crystalline, structural, morphology and optical properties of synthesized ZnO mesostructure were observed using powder X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and transmission electron microscopy (TEM) and their optical properties characterized using UV-visible (UV-vis) and photoluminescence spectroscopy. XRD results revealed that the prepared ZnO sample is highly crystalline having wurtzite crystal structure. The dumbbell like morphological features of ZnO structure is observed from SEM micrographs and TEM measurements. The bandgap energy of ZnO mesostructure was calculated as 3.50Â eV using optical absorbance spectrum. Photoluminescence spectrum of prepared ZnO crystals showed the emissions peak in UV region at 395Â nm attributed to near-band-edge emission of recombined holes with an energy state of a specific defect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 122, 1 May 2014, Pages 230-233
Journal: Materials Letters - Volume 122, 1 May 2014, Pages 230-233
نویسندگان
P. Ramu, P.M. Anbarasan, R. Ramesh, S. Aravindan, S. Ponnusamy, C. Muthamizhchelvan, Z. Yaakob,