ICCAS OpenIR
High-Performance All-Polymer White-Light-Emitting Diodes Using Polyfluorene Containing Phosphonate Groups as an Efficient Electron-Injection Layer
Zhang, Baohua1,2; Qin, Chuanjiang1; Ding, Junqiao1; Chen, Lei2; Xie, Zhiyuan1; Cheng, Yanxiang1; Wang, Lixiang1
2010-09-09
Source PublicationADVANCED FUNCTIONAL MATERIALS
ISSN1616-301X
Volume20Issue:17Pages:2951-2957
AbstractWe report an efficient non-doped all-polymer polymer white-light-emitting diode (PWLED) with a fluorescent three-color, white single polymer as an emissive layer, an ethanol-soluble phosphonate-functionalized polyfluorene (PF-EP) as an electron-injection/electron-transport layer, and LiF/Al as a cathode, respectively. The all-polymer PWLED achieves a peak external quantum efficiency of 6.7%, a forward viewing luminous efficiency of 15.4 cd A(-1) and a power efficiency of 11.4 lm W(-1), respectively, at a brightness of 347 cd m(-2) with Commission Internationale d'Eclairage coordinates of (0.37, 0.42) and color rendering index of 85, which is the best results among the non-doped PWLEDs. Moreover, this kind of PWLED not only shows excellent color stability, but also achieves high brightness at low voltages. The brightness reaches 1000, 10000, and 46830 cd m(-2) at voltages of 4.5, 5.4, and 7.5 V, respectively. The significant enhancement of white-single-polymer-based PWLEDs with PF-EP/LiF/Al to replace for the commonly used Ca/Al cathode is attributed to the more efficient electron injection at PF-EP/LiF/Al interfaces, and the coordinated protecting effect of PF-EP from diffusion of Al atoms into the emissive layer and exciton-quenching near cathode interfaces. The developed highly efficient non-doped all-polymer PWLEDs are well suitable for solution-processing technology and provide a huge potential of low-cost large-area manufacturing for PWLEDs.
DOI10.1002/adfm.201000538
Indexed BySCI
Language英语
WOS IDWOS:000282288600023
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:63[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70286
Collection中国科学院化学研究所
Corresponding AuthorZhang, Baohua
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Baohua,Qin, Chuanjiang,Ding, Junqiao,et al. High-Performance All-Polymer White-Light-Emitting Diodes Using Polyfluorene Containing Phosphonate Groups as an Efficient Electron-Injection Layer[J]. ADVANCED FUNCTIONAL MATERIALS,2010,20(17):2951-2957.
APA Zhang, Baohua.,Qin, Chuanjiang.,Ding, Junqiao.,Chen, Lei.,Xie, Zhiyuan.,...&Wang, Lixiang.(2010).High-Performance All-Polymer White-Light-Emitting Diodes Using Polyfluorene Containing Phosphonate Groups as an Efficient Electron-Injection Layer.ADVANCED FUNCTIONAL MATERIALS,20(17),2951-2957.
MLA Zhang, Baohua,et al."High-Performance All-Polymer White-Light-Emitting Diodes Using Polyfluorene Containing Phosphonate Groups as an Efficient Electron-Injection Layer".ADVANCED FUNCTIONAL MATERIALS 20.17(2010):2951-2957.
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