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White polymer light-emitting diode with a single layer of fluorescent polymer blend was fabricated. The structure of the device is indium tin oxide/poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate)/emission layer/1,3,5-tris(N-phenylbenzimidazol-2-yl)-benzene/Ba/Al, and the emission layer is a blend of poly［2,7-(9,9-dioctyl)fluorene-co-2,3-bis(4-phenyl)-6-fluoroquinoxaline］ (PF-BPFQ5), phenyl-substituted poly(p-phenylene vinylene) derivative (P-PPV) and poly［2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene］ (MEH-PPV), which, respectively, emits blue, green and red light. When the blend weight ratio of PF-BPFQ5∶P-PPV∶MEH-PPV is 100∶06∶06, a pure white light emission is obtained with CIE coordinates of (0331,0329). The maximal luminance efficiencies is 564 cd/A. Meanwhile, the electroluminescence spectrum of white-light emission is stable under different current densities.
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Keywords:
- polymer light-emitting diodes /
- white light /
- blend
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[1] ［1］Pope M, Kallmann H, Magnante P J J 1963 Chem. Phys. 38 2042
[2] ［2］Tang C W, Vanslyke S A 1987 Appl. Phys. Lett. 51 913
[3] ［3］Burroughes J H, Bradley D D C, Brown A R, Marks R N, Mackay K, Friend R H, Holmes A B 1990 Nature 347 539
[4] ［4］Hou L T, Hou Q, Peng J B, Cao Y 2005 Acta Phys. Sin. 54 5377 (in Chinese) ［侯林涛、侯琼、彭俊彪、曹镛 2005 54 5377］
[5] ［5］Sheats J R, Antoniadis H, Hueschen M, Leonard W, Miller J, Moon R, Roitman D, Stocking A 1996 Science 273 884
[6] ［6］Hou L T, Huang F, Peng J B, Cao Y 2007 Acta Phys. Sin. 56 6104 (in Chinese) ［侯林涛、黄飞、彭俊彪、曹镛 2007 56 6104］
[7] ［7］Hu Y, Rao H B 2009 Acta Phys. Sin. 58 3474 (in Chinese) ［胡玥、饶海波 2009 58 3474］
[8] ［8］Huang W B, Zeng W J, Wang L, Peng J B 2008 Acta Phys. Sin. 57 5983 (in Chinese) ［黄文波、曾文进、王藜、彭俊彪 2008 57 5983］
[9] ［9］Wu H B, Huang F, Mo Y Q, Yang W, Peng J B, Cao Y 2004 Adv. Mater. 16 1826
[10] ］Kim T H, Lee H K, Park O O, Chin B D, Lee S H, Kim J K 2006 Adv. Funct. Mater. 16 611
[11] ］Adachi C, Balodo M A, Thompson M E, Forrest S R 2001 J. Appl. Phys. 90 5048
[12] ］Wang L, Liang B, Huang F, Peng J B, Cao Y 2006 Appl. Phys. Lett. 89 151115
[13] ］Kido J, Hongawa K, Okuyam K 1994 Appl. Phys. Lett. 64 815
[14] ］Shih P L, Shu C F, Tung Y L, Chi Y 2006 Appl. Phys. Lett. 88 251110
[15] ］An D, Zou J H, Wu H B, Peng J B, Yang W, Cao Y 2009 Org. Electron. 10 299
[16] ］Zhang Y, Huang F, Chi Y, Jen A K Y 2008 Adv. Mater. 20 1565
[17] ］Wu H B, Zou J H, Liu F, Wang L, Mikhailovsky A, Bazan G C, Yang W, Cao Y 2008 Adv. Mater. 20 696
[18] ］Huang F, Shih P I, Shu C F, Chi Y, Jen A K Y 2008 Adv. Mater. 20 1
[19] ］Wu H B, Zhou G J, Zou J H, Ho C L, Wong W Y, Yang W, Peng J B, Cao Y 2009 Adv. Mater. 21 1
[20] ］Xu Y H, Peng J B, Mo Y Q, Hou Q, Cao Y 2005 Appl. Phys. Lett. 86 163502
[21] ］Huang J S, Li G, Wu Y B, Xu Q F, Yang Y 2006 Adv. Mater. 18 114
[22] ］Zou J H, Liu J, Wu H B, Yang W, Peng J B, Cao Y 2009 Org. Electron. 10 843
[23] ］Zou J H, Tao H, Wu H B, Peng J B 2009 Acta Phys. Sin. 58 1224 (in Chinese) ［邹建华、陶洪、吴宏滨、彭俊彪 2009 58 1224］
[24] ］Ying L, Zou J H, Yang W, Zhang A Q, Wu Z L, Zhao W, Cao Y 2009 Dye. Pigment 20 1
[25] ］Gong X, Robinson M R, Ostrowski J C 2002 Adv. Mater. 14 581
[26] ］Kozlov V G, Bulovic V, Burrows P E, Baldo M, Khalfin V B, Parthasarathy G, Forrest S R 1998 J. Appl. Phys. 82 4096
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