Solution-processable small molecules as efficient universal bipolar host for blue, green and red phosphorescent inverted OLEDs

Chen, Jiangshan; Shi, Changsheng; Fu, Qiang; Zhao, Fangchao; Hu, Yangyang; Feng, Yan; Ma, Dongge

doi:10.1039/c2jm16463a

Cited by 154 publications

(120 citation statements)

References 52 publications

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“…与此同时, 非共轭的水/醇溶聚合物界面材料也在有机光电器件上得到了成功的应用, 实现了高效的聚合物发光器件 [24,25] , 聚合物太阳电池 [12,26,27] 等. 目前的研究表明, 共轭及非共轭水/醇溶界面材料中含有的极性基团, 在它们的独特界面修饰作用中起了关键作用, 可以与金属或金属氧化物电极发生相互作用形成界面偶极而降低电极功函数, 增强电极电子的注入与收集.…”

Section: %的高效聚合物太阳电池unclassified

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Zhang¹,

Guan²,

Huang³

et al. 2012

Acta Chim. Sinica

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Four different water/alcohol soluble polymers, poly [9,9-bis(6-(N,N-diethylamino)-hexyl N-oxide)fluorene] (PF6NO), poly[9,9-bis(6-(N,N-diethylamino)-hexyl)fluorene] (PF6N), polyethylene oxide (PEO), polyethylene imine (PEI) were used as interlayer materials in polymer light-emitting diodes (PLEDs) and polymer solar cells (PSCs) with device structures of indium tin oxide (ITO)/poly(3,4-ethylenedioxylenethiophene):poly(styrenesulphonic acid) (PEDOT:PSS)/Active Layer/Interlayer/Al (or Au), where the green light-emitting polymer poly-[2-(4-(3',7'-dimethyloctyloxy)-phenyl)-p-phenylene vinylene] (P-PPV) and photovoltaic material poly-[N-9'-hepta-decanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothiadiazole) (PCDTBT):[6,6]-phenyl C 71-butyric acid methyl ester (PC 71 BM) were used as the light emitting layer and light absorption layers for PLEDs and PSCs, respectively. The relationships between chemical structure and optoelectronic properties of the polymer interlayer materials were systematically investigated. Photovoltaic measurement were used to determine the built-in potential across the devices and consequently to understand the interface modification abilities of these materials. It was found that the devices based on conjugated interlayer materials exhibited larger open circuit voltages than those of devices based on non-conjugated interlayer materials, which indicates that the conjugated interlayer materials lead to lower energetic barriers for electron. Device studies showed that the conjugated interlayer materials PF6NO and PF6N exhibited much better device performance both in PLEDs and PSCs compared to the non-conjugated interlayer materials PEO and PEI, which was consistent with the photovoltaic measurement results. PLEDs studies indicated that the devices based on non-conjugated interlayer materials PEO and PEI exhibited dramatically decreased efficiencies when the interlayers' thicknesses are more than 20 nm, while the devices based on conjugated interlayer materials PF6NO and PF6N maintained good performances. Moreover, both PLEDs and PSCs device studies indicated that the conjugated interlayer materials show a wide range of adaptability, which work well for both Al and Au electrode devices, while the non-conjugated interlayer materials only work well for the Al electrode devices. Our results indicated that besides the highly polar side chain groups, the conjugated interlayer materials' main chains also play an important role on their excellent interfacial modification ability, which lead to easily electron transporting and wide range of adaptability.

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Section: %的高效聚合物太阳电池unclassified

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Zhang¹,

Guan²,

Huang³

et al. 2012

Acta Chim. Sinica

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“…, current efficiency or EQE drastically drops as the applied voltage or brightness increases) problems, leading to an undesired low efficiency at high luminance, which is unfavorable for their commercial realization for lighting. 10,11 …”

Section: Introductionmentioning

confidence: 99%

Stable green phosphorescence organic light-emitting diodes with low efficiency roll-off using a novel bipolar thermally activated delayed fluorescence material as host

Guo

Wang

et al. 2017

Chem. Sci.

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“…9 and 10). The device performance was comparable with those of blue phosphorescent devices fabricated by a solution process [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48]. For example, Lu et al reported an efficient FIrpic-based phosphorescent OLED with a maximum current efficiency of 26.5 cd A À1 by utilizing a series of double-silicon bridged molecules as solution-processable hosts [21]; Qiu et al also demonstrated a maximum current efficiency of 12.5 cd A À1 by using solution-processed mixed hosts [49].…”

Section: Electroluminescent Devicesmentioning

confidence: 63%

Tetrasubstituted adamantane derivatives with arylamine groups: Solution-processable hole-transporting and host materials with high triplet energy and good thermal stability for organic light-emitting devices

Solution-processable small molecules as efficient universal bipolar host for blue, green and red phosphorescent inverted OLEDs

Cited by 154 publications

References 52 publications

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Performance Study of Water/Alcohol Soluble Polymer Interface Materials in Polymer Optoelectronic Devices

Stable green phosphorescence organic light-emitting diodes with low efficiency roll-off using a novel bipolar thermally activated delayed fluorescence material as host

Tetrasubstituted adamantane derivatives with arylamine groups: Solution-processable hole-transporting and host materials with high triplet energy and good thermal stability for organic light-emitting devices

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