کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1650656 1007611 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Piezoelectric, dielectric, optical and electrical characterization of solution grown flower-like ZnO nanocrystal
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Piezoelectric, dielectric, optical and electrical characterization of solution grown flower-like ZnO nanocrystal
چکیده انگلیسی

Flower-like ZnO nanocrystals were grown by low temperature solution technique after controlling Zn2+/OH− ratio. The morphology and structural studies confirmed the formation of nano structure, revealing the [0001] oriented growth of the ZnO nanorods. The variation of dielectric constant, loss, ac conductivity and activation energy as a function of frequency was studied. In UV–Vis absorption spectra, a sharp absorption band-edge at 355 nm is observed from which direct optical band gap 3.40 eV was calculated. In P–E hysteresis piezoelectric characterization for unpoled ZnO, the value of remnant polarization and coercive field was found to be 16.31 µC/cm2 and 6.11 kV/cm respectively which increased to 25.65 µC/cm2 and 8.35 kV/cm, respectively after poling at 1 kV/cm. The piezoelectric charge coefficient (d33) was found to be 1.7 pC/N.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 63, Issue 22, 15 September 2009, Pages 1910–1913
نویسندگان
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