Structural and Optical Properties of Hydrothermally Synthesized ZnO and Zn0.99O:Eu3+ Powders

K. Parka, D.A. Hakeem a, J. Kim b, Y. Kim c and S.-J. Kim d aFaculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea bDepartment of Advanced Materials Engineering, Hoseo University, Asan 336-795, Korea cDepartment of Chemistry, Dankook University, Cheonan, Chungnam 330-714, Korea dDepartment of Advanced Materials and Chemical Engineering, Halla University, Wonju, Kangwon 220-712, Korea

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The structural and optical properties of the ZnO and Zn0.99O:Eu3+ powders synthesized by the hydrothermal method at two different temperatures (150°C and 250°C) were studied. The ZnO and Zn0.99O:0.01Eu3+ powders synthesized at 150 and 250°C showed rod- and flower-like morphologies, respectively. The as-synthesized and annealed ZnO and Zn0.99O:0.01Eu3+ powders formed the wurtzite crystal structure and P63mc space group. The crystallite size of the as-synthesized and annealed ZnO powders increased by the incorporation of Eu3+. The photoluminescence properties of annealed Zn0.99O:0.01Eu3+ powders were substantially improved by controlling the synthesis temperature. The annealed Zn0.99O:0.01Eu3+ powders synthesized at 250°C displayed much stronger emission intensity than those at 150°C.

DOI: 10.12693/APhysPolA.133.873 PACS numbers: 78.55.-m, 78.55.Hx, 78.55.Et