Structural and Optical Properties of Nanocrystalline ZnO Powder by a Direct Thermal Decomposition Route Using Zinc Acetate Dihydrate

Weeranuch Kaewwiset; Tarinee Srisuphang; Sasiprapa Keawsomrong; Sutthipoj Sutthana; Supphadate Sujinnapram

doi:10.4028/www.scientific.net/AMR.979.151

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 979Structural and Optical Properties of...

Structural and Optical Properties of Nanocrystalline ZnO Powder by a Direct Thermal Decomposition Route Using Zinc Acetate Dihydrate

Abstract:

The nanocrystalline ZnO powders were synthesized by a direct thermal decomposition using zinc acetate dihydrate as starting materials. The precursor was characterized by TG-DTA to determine the thermal decomposition and crystallization temperature which was found to be at 300 °C. The precursors were calcined at different temperatures of 400, 500, and 600 °C for 4 h. The structure of the prepared samples was studied by XRD, confirming the formation of wurtzite structure. The synthesized powders exhibited the UV absorption below 400 nm (3.10 eV) with a well defined absorption peak at around 285 nm (4.35 eV). The estimated direct bandgaps were obtained to be 3.19, 3.16, and 3.14 eV for the ZnO samples thermally decomposed at 400, 500, and 600°C, respectively.

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Periodical:

Advanced Materials Research (Volume 979)

Pages:

151-154

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.979.151

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Online since:

June 2014

Authors:

Weeranuch Kaewwiset, Tarinee Srisuphang, Sasiprapa Keawsomrong, Sutthipoj Sutthana, Supphadate Sujinnapram*

Keywords:

Nanocrystalline, Optical Property, Thermal Decomposition, Zinc Oxide

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