[1] [1] C. C. Wu, Y. T. Lin, H. H. Chiang et al.. Highly bright blue organic light-emitting devices using spirobifluorenecored conjugated compounds[J]. Appl. Phys. Lett., 2002, 81(4): 577～579

[3] [3] Mengting Lee, Hsianhung Chen, Chih-hung Liao. Stable styrylamine-doped blue organic electroluminescent device based on 2-methyl-9,10-di(2-naphthyl)anthracene[J]. Appl. Phys. Lett., 2004, 85(15): 3301～3303

[4] [4] C. W. Tang, S. A. Vanslyke. Organic electroluminescent diodes[J]. Appl. Phys. Lett., 1987, 57(12): 913～915

[6] [6] Anna B. Chwang, Raymond C. Kwong, Julie J. Brown. Graded mixed-layer organic light-emitting devices[J]. Appl. Phys. Lett., 2002, 80(5): 725～727

[8] [8] Yan Shao, Yang Yang. Naturally formed graded junction for organic light-emitting diodes[J]. Appl. Phys. Lett., 2003, 83(12): 2453～2455

[9] [9] S. T. Lee, Z. Gao, L. S. Huang. Metal diffusion from electrodes in organic light-emitting diodes[J]. Appl. Phys. Lett., 1999, 75(10): 1404～1406

[10] [10] Chihaya Adachi, Kazukiyo Nagai, Nozomu Tamoto. Molecular design of hole transport materials for obtaining high durability in organic electroluminescent diodes[J]. Appl. Phys. Lett., 1995, 66(20): 2679～2681

[11] [11] Hany Aziz, Zoran D. Popovic, Nan-Xing Hou et al.. Degradation mechanism of small molecule based organic light-emitting devices[J]. Science, 1999, 283: 1900

[12] [12] Jing Feng, Feng Li, Wenbao Gao et al.. Improvement of efficiency and color purity utilizing two-step energy transfer for red organic light-emitting devices[J]. Appl. Phys. Lett., 2002, 81(16): 2935～2937