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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis of dumbbell shaped ZnO crystals using one-pot hydrothermal method and their characterisations
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 3.50 eV using optical absorbance spectrum. Photoluminescence spectrum of prepared ZnO crystals showed the emissions peak in UV region at 395 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
نویسندگان
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