Hydrothermal growth of scandium-doped ZnO crystals

✍ Scribed by Yan-Bin Zuo; Fu-Hua Lu; Chang-Long Zhang; Yin Hang; Wei-Ning Zhou; Han-De Huo; Shi-Jie Qin; Hai-Tao Zhou; Xiao-Ling He; Dong-Ping Li; Hai-Xia Zhang; Yi-Xin Chen; Shu-lin Gu

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 398 KB
• Volume: 318
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2010.11.088

✦ Synopsis

Scandium-doped ZnO crystals (ZnO:Sc) have been successfully grown by the hydrothermal method. Compared with that of the undoped ZnO crystals grown by the hydrothermal method, the influence of Sc 3 + on the morphology and growth rate of the ZnO:Sc crystals was studied. The result shows that the growth rates of m and c faces of ZnO crystal increase, and the morphology from hexagonal pyramid to hexagonal prism changes significantly with increasing Sc 2 O 3 :ZnO ratio in the growth system. Based on this growth characteristic, large-sized ZnO crystals may be grown, and more ZnO wafers in large size parallel to (0 0 0 1) face can be obtained. A systematic characterization of ZnO:Sc was investigated by inductively coupled plasma mass spectrometry (ICP-MS), PL spectra, transmission spectra and X-ray rocking curve measurement. The results indicate that the crystallinity of as-grown ZnO has been improved. The crystallinity, PL spectra, transmittance and electrical properties of -c region of as-grown ZnO are similar to those of +c region and the resistivity of as-grown ZnO decreases when Sc 3 + is added to the growing solution.