The Effects of Different Seed Layers and Growth Time on the Quality of ZnO NRs Arrays
Author(s):
Abstract:
ZnO nanorods (NRs) were synthesized using an in situ low-temperature hydrothermal method. In order to investigate the effect of different seed layers on quality of ZnO NRs arrays, alcoholic, alkaline and acidic seed solutions were deposited by spin coating on ITO-glass substrate. Experimental results revealed that the vertically ZnO NRs obtained from monoethanolamine-based seed layer is the most uniform and compact one. Alkali solutions result in better alignment and uniform cross sections than those realized via acetic acid-based seed layer. Also, KOH- based seed layer show lower density and bigger cross section of ZnO NRs than that of NaOH based seed layer. Evolution of ZnO NRs layer was investigated by SEM images and UV-visible spectra at different growth times. By increasing growth time, the wavelength of UV-vis absorption edge exhibit a red-shift and the transmission of the light in visible and infrared regions decrease and therefore, the energy band gap of ZnO NRs decrease. Also, Oxygen plasma treatment resulted in increasing of UV absorption of ZnO NRs thin film. Scanning electron microscopy and X-ray diffraction spectra indicated that the crystalline ZnO NRs have rod shapes with hexagonal cross sections.
Keywords:
Language:
English
Published:
International Journal Of Nanoscience and Nanotechnology, Volume:12 Issue: 2, Spring 2016
Pages:
119 to 130
magiran.com/p1573382
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!