[1] Tang C W, Vanslyke S A A. Appl. Phys. Lett., 1987, 51(12): 913.
[2] Forrest S R, Org. Electron., 2003, 4: 45.
[3] Sun Y R, Giebink N C, Kanno H, et al. Nature, 2006, 440: 908.
[4] Huang J S, Hou W J, Li J H, et aL. Appl. Phys. Lett., 2006, 89(3): 133509(1-3).
[5] Sun Y R, Giebink N C, Kanno H, et al. Nature, 2006, 440: 908.
[7] Chang C C, Chen J F, Hwang S W, et al. Appl. Phys. Lett., 2005, 87(25): 253501.
[8] Lu M H, Weaver M S, Zhou T X, et al. Appl. Phys. Lett., 2002, 81: 3921.
[9] Xie Z Y, Huang J S, Li C N, et al. Appl. Phys. Lett., 1999, 74: 641.
[10] Duggal A R, Shiang J J, Heller C M, et al. Appl. Phys. Lett., 2002, 80: 3470.
[11] Biswas P K, De A, Dua L K, et al. Applied Surface Science, 2006, 253(4): 1953.