The change of epitaxial relationship for ZnO films on as-received and etched STO substrates is accompanied with the increase of lattice mismatch, decrease of bond density, and increase of substrate surface roughness. This investigation presents a very simple way to control
epitaxial relationship of ZnO films with STO substrates, which is of technological Geneticin interest in optoelectronic and electronic devices. Acknowledgments This work was supported by the 973 program (2012CB921304, 2012CB619306) and the National Natural Science Foundation of China (60990313, 51202057). References 1. Perez JZ, Sanjose VM, Lidon EP, Cochero J: Facets evolution and surface electrical properties of nonpolar m-plane ZnO thin films. Appl Phys Lett 2006, 88:261912.CrossRef
2. Jia CH, Chen YH, Liu GH, Liu XL, Yang SY, Wang ZG: Growth of c-oriented ZnO films on (001)SrTiO3 substrates by MOCVD. J Crystal Growth 2008, 311:200.CrossRef 3. Perez JZ, Sanjose VM, Lidon EP, Colchero J: Polarity effects on ZnO films grown along the nonpolar [11–20]-direction. Phys Rev Lett 2005, 95:226105.CrossRef 4. Baker TJ, Haskell BA, Wu F, Fini PT, Speck JS, Nakamura SJ: Characterization of planar semipolar gallium nitride films on spinel substrates. Quisinostat cell line Jpn J Appl Phys 2005, 44:L920.CrossRef 5. Peruzzi M, Pedarnig JD, Bauerle D, Schwinger W, AG-881 molecular weight Schaffler F: Inclined ZnO thin films produced by pulsed-laser deposition. Appl Phys A 1873, 2004:79. 6. Bellingeri E, Marre D, Pallecchi I,
Pellegrino L, Siri AS: High mobility in ZnO thin films deposited on perovskite substrates with a low temperature nucleation layer. Appl Phys Lett IKBKE 2005, 86:012109.CrossRef 7. Wei XH, Li YR, Zhu J, Huang W, Zhang Y, Luo WB, Ji H: Epitaxial properties of ZnO thin films on SrTiO3 substrates grown by laser molecular beam epitaxy. Appl Phys Lett 2007, 90:151918.CrossRef 8. Wu YL, Zhang LW, Xie GL, Zhu JL, Chen YH: Fabrication and transport properties of ZnO/Nb-1 wt%-doped SrTiO3 epitaxial heterojunctions. Appl Phys Lett 2008, 92:012115.CrossRef 9. Karger M, Schilling M: Epitaxial properties of Al-doped ZnO thin films grown by pulsed laser deposition on SrTiO3 (001). Phys Rev B 2005, 71:075304.CrossRef 10. Fujisawa H, Nonomura H, Shimizu M, Niu H: Observations of initial growth stage of epitaxial Pb(Zr, Ti)O3 thin films on SrTiO3(1 0 0) substrate by MOCVD. J Crystal Growth 2002, 237–239:459.CrossRef 11. Infortuna A, Muralt P, Cantoni M, Setter N: Epitaxial growth of (Sr, Ba)Nb2O6 thin films on SrTiO3 single crystal substrate. J Appl Phys 2006, 100:104110.CrossRef 12. Chae RH, Rao RA, Gan Q, Eom CB: Initial stage nucleation and growth of epitaxial SrRuO3 thin films on (0 0 1) SrTiO3 substrates. J Electroceramics 2000, 4:345.CrossRef 13. Yoshimura T, Fujimura N, Ito T: The initial stage of BaTiO3 epitaxial films on etched and annealed SrTiO3 substrates.