کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1652802 1007648 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of size-tunable ZnO nanorod arrays from NH3·H2O/ZnNO3 solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis of size-tunable ZnO nanorod arrays from NH3·H2O/ZnNO3 solutions
چکیده انگلیسی

Well-aligned crystalline ZnO nanorod arrays were fabricated via an aqueous solution route with zinc nitrate and ammonia as precursors. Dip-coating was firstly utilized to form a ZnO film on ITO substrate as a seed layer for subsequent growth of ZnO nanorods. The effects of NH3·H2O/ZnNO3 molar ratio, ZnNO3 concentration, growth temperature and time on nanorod morphology were respectively investigated. It was found that the size of nanorod is mainly determined by the molar ratio and concentration. XRD demonstrates that ZnO nanorods are wurtzite crystal structures preferentially orienting in the direction of the c-axis. SEM confirms that ZnO nanorods grew up perpendicular to the substrate. The diameter and length were tunable in a broad range from 80 nm to 500 nm and 250 nm up to 8 μm, respectively. The aspect ratio changed from 3 to 17 mainly dependent on composition of the aqueous solution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 61, Issue 13, May 2007, Pages 2775–2778
نویسندگان
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