[1] [1] D’Andrade B W, Esler J, Lin C, et al. Proc. SPIE, F, 2008.

[2] [2] Reineke S, Lindner F, Schwartz G, et al. Nature, 2009, 459(7244): 234.

[3] [3] Kalyani N T, Dhoble S J. Renew. Sust. Energ. Rev., 2012, 16(5): 2696.

[4] [4] Ju G, Hu Y, Chen L, et al. Optics & Laser Technology, 2012, 44(1): 39.

[5] [5] Humphreys C J. MRS Bull, 2008, 33(04): 459.

[6] [6] Jang C K, Jaung J Y. Mol. Cryst. Liq. Cryst., 2012, 563: 238.

[7] [7] Seo J H, Lee S J, Seo B M, et al. Org. Electron., 2010, 11(11): 1759.

[8] [8] D'Andrade B W, Forrest S R. Adv. Mater., 2004, 16(18): 1585

[9] [9] Ho M H, Hsu S F, Ma J W, et al. Appl. Phys. Lett., 2007, 91(11): 113513.

[10] [10] Kim T H, Wang W, Li Q. Frontiers of Chemical Science and Engineering, 2012. 1.

[11] [11] Baek H I, Lee C. J. Appl. Phys., 2008, 103(12): 124504.

[12] [12] Tokito S, Iijima T, Tsuzuki T, et al. Appl. Phys. Lett., 2003, 83(12): 2459.

[13] [13] Zhou G, Ho C L, Wong W Y, et al. Adv. Funct. Mater., 2008, 18(3): 499.

[14] [14] D’Andrade B W, Brooks J, Adamovich V, et al. Adv. Mater., 2002, 14(15): 1032.

[15] [15] Williams E L, Haavisto K, Li J, et al. Adv. Mater., 2007, 19(2): 197.

[16] [16] Jiang J, Xu Y, Yang W, et al. Adv. Mater., 2006, 18(13): 1769.

[17] [17] Ho C L, Wong W Y, Gao Z Q, et al. Adv. Funct. Mater., 2008, 18(2): 319.

[18] [18] Kim C H, Shinar J. Appl. Phys. Lett., 2002, 80(12): 2201.

[19] [19] D'Andrade B W, Holmes R J, Forrest S R. Adv. Mater., 2004, 16(7): 624.

[20] [20] Lan Y H, Hsiao C H, Lee P Y, et al. Org. Electron., 2011, 12(5): 756.

[21] [21] Farinola G M, Ragni R. Chemical Society Reviews, 2011, 40(7): 3467.

[22] [22] Kido J, Hongawa K, Okuyama K, et al. Appl. Phys. Lett., 1994, 64(7): 815.

[23] [23] Hu B, Karasz F E. J. Appl. Phys., 2003, 93(4): 1995.

[24] [24] Wang Q, Ma D. Chemical Society Reviews, 2010, 39(7): 2387.

[25] [25] Schwartz G, Reineke S, Rosenow T C, et al. Adv. Funct. Mater., 2009, 19(9): 1319.

[26] [26] Yang X, Wang Z, Madakuni S, et al. Appl. Phys. Lett., 2008, 93(19): 19193303.

[27] [27] Schwartz G, Reineke S, Walzer K, et al. Appl. Phys. Lett., 2008, 92(5): 053311.

[28] [28] Forrest S R, Bradley D D C, Thompson M E. Adv. Mater, 2003, 15(13): 1043.

[29] [29] So F, Kido J, Burrows P. MRS Bulletin, 2008, 33(07): 663.

[30] [30] Laquai F, Park Y S, Kim J J, et al. Macromol Rapid Comm., 2009, 30(14): 1203.

[31] [31] Zhou X, Pfeiffer M, Blochwitz J, et al. Appl. Phys. Lett., 2001, 78: 410.

[32] [32] Hong K, Lee J L. Electronic Materials Letters, 2011, 7(2): 77.

[33] [33] Choi M R, Woo S H, Han T H, et al. Chem. Sus. Chem., 2011, 4(3): 363.

[34] [34] Choulis S A, Choong V E, Patwardhan A, et al. Adv. Funct. Mater., 2006, 16(8): 1075.

[35] [35] Kim S Y, Lee J L. Org. Electron., 2008, 9(5): 678.

[36] [36] Lee Y J, Kim S H, Huh J, et al. Appl. Phys. Lett., 2003, 82(21): 3779.

[37] [37] Smith L H, Wasey J A E, Samuel I D W, et al. Adv. Funct. Mater., 2005, 15(11): 1839.

[38] [38] Moller S, Forrest S. J. Appl. Phys., 2002, 91(5): 3324.

[39] [39] Sun Y, Forrest S R. Nat. Photonics, 2008, 2(8): 483.

[40] [40] Slootsky M, Forrest S R. Appl. Phys. Lett., 2009, 94(16): 163302.

[41] [41] Krummacher B C, Nowy S, Frischeisen J, et al. Org. Electron., 2009, 10(3): 478.

[42] [42] Eom S H, Zheng Y, Wrzesniewski E, et al. Org. Electron., 2009, 10(4): 686.

[43] [43] Mandlik P, Han L, Wagner S, et al. Appl. Phys. Lett., 2008, 93(20): 203303.

[44] [44] Levermore P, Adamovich V, Rajan K, et al. Highly Efficient Phosphorescent OLED Lighting Panels for Solid State Lighting; Proceedings of the SID, F, 2010.

[45] [45] Hatwar T K, Spindler J P, Kondakova M, et al. 52.2: Hybrid Tandem White OLEDs with High Efficiency and Long Life Time for AMOLED Displays and Solid State Lighting; Proceedings of the SID Symposium Digest of Technical Papers, F, 2012. Wiley Online Library.

[46] [46] Lee M W, Song O K, Koo Y M, et al. P 147: Asymmetric High Performance Hybrid Tandem White OLEDs for Lighting Applications; Proceedings of the SID Symposium Digest of Technical Papers, F, 2012. Wiley Online Library.

[47] [47] Komoda T, Tsuji H, Ito N, et al. High-quality white OLEDs and Resource saving Fabrication Processes for Lighting Application; Proceedings of the SID, F, 2010.

[48] [48] Lee M T, Lin J S, Chu M T, et al. P 154: High Efficiency White Phosphorescent OLED with Host Free Yellow Emitter; Proceedings of the SID Symposium Digest of Technical Papers, F, 2012. Wiley Online Library.

[49] [49] Kawamura M, Kawamura Y, Mizuki Y, et al. Highly Efficient Fluorescent Blue OLEDs with Efficiency-Enhancement Layer; Proceedings of the SID, F, 2010.