A. Tsukazaki, M. Kubota, A. Ohotomo, T. Onuma, K. Ohtani, H. Ohono, S. F. Chichibu and M. Kawasaki, “Blue Light-Emitting Diode Based on ZnO,” Japanese Journal of Applied Physics, Vol. 44, 2005, pp. 643-645.
 H. Sato, T. Minami, S. Takata, T. Mouri and N. Ogawa, “Highly Conduc-tive and Transparent ZnO: Al Thin Films Prepared on High-Temperature Substrates by d.c. Magnetron Sputtering,” Thin Solid Films, Vol. 220, 1992, pp. 327-332.
 T. Minami, T. Kakumu, K. Shimokawa and S. Takata, “New Transparent Conducting Zno-In2O3-Sno2 Thin Films Prepared by Magnetron Sputtering,” Thin Solid Film, Vol. 317, No. 1-2, April 1998, pp. 318-321.
 M. Lippmas, T. Koida, H. Minami, Z. W. Jin, M. Kawasaki and H. Koinuma, “Design of Compact Pulsed Laser Deposition Chambers for the Growth of Combinatorial Oxide Thin Film Libralies,” Applied Surface Science, Vol. 189, No. 3-4, April 2002, pp. 205-209 .
 K. Vanheusden, W. L. Warren, C. H. Seager, D. R. Tallant, J. A. Voigt and B. E. Gnade, “Mechanisms behind Green Photoluminescence in Zno Phosphor Powders,” Japanese Journal of Applied Physics, Vol. 79, No. 10, June 1996, pp. 7983-7990.
 C. M. Yan, Z. Chen and X. P. Zhao, “Enhanced Electroluminescence of Zno Nanocrystalline Annealing from Mesoporous Precursors,” Solid State Communications, Vol. 140, No. 1, October 2006, pp. 18-22.