[1] Carlotti G, Socino G. Acoustic investigation of the elastic properties of ZnO films. Appl. Phys. Lett., 1987, 51(23):1889～1891
[2] Koike J, Shimoe K, Ieki H. 1.5 GHz Low loss surface acoustic wave filter using ZnO/sapphire substrate. Jpn. J. Appl. Phys., 1993, 32(5B):2337～2340
[3] Igasaki Y. Epitaxial growth of aluminum doped zinc oxide films on (1120) oriented sapphire substrates. J. Crystal Growth, 1992, 166(3,4):357～363
[4] Srikant V, Sergo V, Clarke D R. Epitaxial aluminum doped zinc oxide thin films on sapphire: Ⅰ, Effect of substrate orientation. J. American Ceramic Society, 1995, 78(7):1931～1934
[5] Kobayashi K, Matsubara T, Matsuaima S et al.. Preparation of ZnO films on sapphire (0112) substrates by low pressure organometallic chemical vapour deposition. J. Mater. Sci. Lett., 1996, 15(5):457～459
[6] Minegishi K, Koiwai Y, Kikuchi Y et al.. Growth of p type zinc xxide films by chemical vapor deposition. Jpn. J. Appl. Phys., 1997, 36(11A):1453～1455
[7] Tang Z K, Wong G K L, Yu P et al.. Room temperature ultraviolet laser emisson from self assembled ZnO microcrystallite thin films. Appl. Phys. Lett., 1998, 72(25):3270～3272
[8] Chen Y, Bagnall D M, Zhu Z et al.. Growth of ZnO crystal thin films on c plane (0001) sapphire by plasma enhanced molecular beam epitaxial. J. Cryst. Growth, 1997, 181(1,2):165～169
[9] Bagnall D M, Chen Y, Zhu Z et al.. Optically pumped lasing of ZnO at room temperature. Appl. Phys. Lett., 1997, 70(17):2230～2232
[10] Segawa Y, Ohtomo A, Kawasaki M et al.. Growth of ZnO thin films by laser MBE:Lasing of exciton at room temperature. Phys. Stat. Sol., 1997, 202(2):669～672
[11] Ianno N J, McConville L, Shaikh N et al.. Characterization of pulsed laser deposited zinc oxide. Thin Solid Films, 1992, 220(1,2):92～99
[12] Spanhel L, Anderson M A. Semiconductor clusters in the sol gel process:Quantized aggregation, gelation, and crystal growth in concentrated ZnO colloids. J. Am. Chem. Soc., 1991, 113(8):2826～2833
[13] Studenikin S A, Golego N, Cocivera M. Fabrication of green and orange photo luminescent,undoped ZnO films using spray pyrolysis. J. Appl. Phys., 1998, 79(4):2287～2294
[14] Vanheusden K, Warren W L, Seager C H et al.. Mechanisms behind green photoluminescence in ZnO phosphor powders. J. Appl. Phys., 1996, 79(10):7983～7990
[15] Bethke S, Pan H, Wesseis B W. Luminescence of heteroepitaxial zinc oxide. Appl. Phys. Lett., 1988, 52(2):138～140
[16] Chen Y, Bagnall D M, Koh H Jn et al.. Plasma assisted molecular beam epitaxy of ZnO on c plane sapphire: Growth and characterization. J. Appl. Phys., 1998, 84(7):3912～3918
[17] Reynolds D C, Look D C, Jogai B et al.. Time resolved photoluminescence lifetime measurements of the Γ5 and Γ6 free excitons in ZnO. J. Appl. Phys., 2000, 88(4):2152～2153
