[1] [1] G. Gustafsson,Y. Cao,G. M. Treacy et al.. Flexible light-emitting diodes made from soluble conducting polymers[J]. Nature,1992,357(6378):477-479

[2] [2] C. C. Wu,S. D. Theiss,G. Gu et al.. Integration of organic LEDs and amorphous Si TFT’s onto flexible and lightweight metal foil substrates[J]. IEEE Elec. Dev. Lett.,1997,18(1):609-611

[3] [3] Z. Xie,L. S. Hung,F. Zhu. A flexible top-emitting organic light-emitting diode on steel foil[J]. Chem. Phys. Lett.,2003,381(5-6):691-696

[4] [4] C. Charton,N. Schiller,M. Fahland et al.. Development of high barrier films on flexible polymer substrates[J]. Thin Solid Films,2006,502(1-2):99-103

[5] [5] F. Templier,B. Aventurier,P. Demars et al.. Fabrication of high performance low temperature poly-silicon backplanes on metal foil for flexible active-matrix organic light emission diode displays[J]. Thin Solid Films,2007,515(19):7428-7432

[6] [6] Cao Jin,Zhang Xiaobo,Wei Fuxiang et al.. Novel blue organic light emitting diode with highly saturated color and weak current-lnduced quenching[J]. Acta Optica Sinina,2006,26(2):275-278

[7] [7] Lou Shuangling,Yu Junsheng,Li Weizhi et al.. Organic light-emitting devices based on novel hole transport layer[J]. Acta Optica Sinina,2007,27(8):1455-1459

[8] [8] Suo Fan,Yu Junsheng,Deng Jing et al.. Study on high-brightness green organic light-emitting devices using PS-TPD as hole transporting layer[J]. Acta Optica Sinina,2007,27(11):2021-2026

[9] [9] N. C. Greenham,R. H. Friend,D. D. C. Bradley. Angular dependence of the emission from a conjugated polymer light-emitting diode:Implications for efficiency calculations[J]. Adv. Mater.,1994,6(6):491-494

[10] [10] M. H. Lu,J. C. Sturm. Optimization of external coupling and light emission in organic light-emitting devices:modeling and experiment[J]. J. Appl. Phys.,2002,91(2):595-604

[11] [11] B. Krummacher,M. K. Mathai,V. E. Choong et al.. Influence of charge balance and microcavity effects on resultant efficiency of organic-light emitting devices[J]. Organic Electronics,2006,7:313-318

[12] [12] T. Yamasaki,K. Sumioka,T. Tsutsui. Organic light-emitting device with an ordered monolayer of silica microspheres as a scattering mudium[J]. Appl. Phys. Lett.,2000,76(10):1243-1245

[13] [13] S. Moller,S. R. Forrest. Improved light out-coupling in organic light emitting diodes employing ordered microlens arrays[J]. Appl. Phys. Lett.,2002,91(5):3324-3327

[14] [14] C. F. Madigan,M. H. Lu,J. C. Sturm. Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modification[J]. Appl. Phys. Lett.,2000,76(13):1650-1652

[15] [15] H. J. Peng,Y. L. Ho,X. J. Yu et al.. Couping efficiency enhancement in organic light-emitting devices using microlens array-theory and experiment[J]. J. Display Technology,2005,1(2):278-282