Study of Heating Effect on Specific Surface Area, and Changing Optical Properties of ZnO Nanocrystals

Abstract:

In this work ZnO nanocrystal powders have been synthesized by using Zinc acetate dehydrate as a precursor and sol-gel method. Then the products have been annealed at temperature of 200-1050°C, for 2 hours. The powders were characterized using X-ray diffraction (XRD), UV-vis absorption and photoluminescence (PL) spectroscopy. The morphology of refrence ZnO nanoparticles have been studied using Transmission Electron Microscope (TEM). During the annealing process, increase in nanocrystal size, defects and energy gap quantitative, and decrease in specific surface area have been observed.

• Periodical: Advanced Materials Research (Volumes 403-408)
• Pages: 1205-1210
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.403-408.1205
• Online since: November 2011
• Authors: Jaleh Babak, Ashrafi Ghazaleh, Gholami Nasim, Azizian Saeid, Golbedaghi Reza, Habibi Safdar, Parsian Hosein
• Keywords: Nanocrystal, PL, Sol-Gel Method, UV-VIS, X-Ray Diffraction (XRD), Zinc Oxide (ZnO)

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