Efficient polymer white-light-emitting diodes
Efficient polymer white-light-emitting diodes
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DOI：
10.1063/1.1901824
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发表时间：
2005-04
影响因子：
4
通讯作者：
Yunhua Xu;Junbiao Peng;Y. Mo;Q. Hou;Yong Cao
中科院分区：
文献类型：
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作者：
Yunhua Xu;Junbiao Peng;Y. Mo;Q. Hou;Yong Cao
Polymer white-light-emitting diodes (WPLEDs) with bilayer structures were fabricated by the spin-coating method. The device structure used here is indium–tin–oxide/polyethylene dioxythiophene (ITO/PEDOT)/blend1/blend2/Ba∕Al, whose blend1 consists of poly(N-vinyl carbazole) (PVK), a copolymer of 9,9-diotylfluorene, and 4,7-di(3-hexyl-thien-2-yl)- 2,1,3-benzothiadiazole (PFO-DHTBT), and blend2 is the blend of polyhedral oligomeric silsesquioxane-terminated poly(9,9-dioctylfluorene) (PFO-poss) and phenyl-substituted PPV derivative (P-PPV). The copolymer PFO-DHTBT emits red light. The blend2 gives off both green and blue emission bands in the electroluminescence (EL) spectrum. The relative intensity of the green and blue bands depends on the blend ratio. The EL spectrum of the device can be controlled by adjusting the weight ratios in the blend1 and blend2, respectively. At the weight ratios of 100:3 (PVK to PFO-DHTBT) in blend1 and 100:1 (PFO-poss to P-PPV) in blend2, and by keeping the thickness of the two ...
