Influence of the Carrier Mobility and Charge Accumulation in Interfacial Layers on Deterioration in Organic Light-emitting Diodes

2017 ◽  
Vol 137 (5) ◽  
pp. 291-297
Author(s):  
Hirofumi Nakamura ◽  
Miki Kuribayashi ◽  
Chihaya Adachi
Keyword(s):  
Carrier Mobility ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Charge Accumulation ◽  
Light Emitting ◽  
Interfacial Layers ◽  
Organic Light

Electroluminescence and impedance analyses of organic light emitting diodes using anhydride materials as cathode interfacial layers

2009 ◽  
Vol 517 (14) ◽  
pp. 4131-4134 ◽  
Author(s):  
Eunkyoung Nam ◽  
Hyungjun Park ◽  
Keunhee Park ◽  
Mi Ran Moon ◽  
Sunyoung Sohn ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Interfacial Layers ◽  
Organic Light

Reduction of Tungsten Oxide: A Path Towards Dual Functionality Utilization for Efficient Anode and Cathode Interfacial Layers in Organic Light-Emitting Diodes

2011 ◽  
Vol 21 (8) ◽  
pp. 1489-1497 ◽  
Author(s):  
Maria Vasilopoulou ◽  
Leonidas C. Palilis ◽  
Dimitra G. Georgiadou ◽  
Antonios M. Douvas ◽  
Panagiotis Argitis ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Interfacial Layers ◽  
Organic Light

scholarly journals Balanced ambipolar charge carrier mobility in mixed layers for application in hybrid white organic light-emitting diodes

2008 ◽  
Vol 93 (7) ◽  
pp. 073304 ◽  
Author(s):  
Gregor Schwartz ◽  
Tung-Huei Ke ◽  
Chung-Chih Wu ◽  
Karsten Walzer ◽  
Karl Leo
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Light Emitting Diodes ◽  
Charge Carrier Mobility ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Mixed Layers

Isomer dependent molecular packing and carrier mobility of N-phenylcarbazole–phenanthro[9,10-d]imidazole based materials as hosts for efficient electrophosphorescence devices

2019 ◽  
Vol 7 (43) ◽  
pp. 13486-13492 ◽  
Author(s):  
Zhiqiang Li ◽  
Zong Cheng ◽  
Jianyan Lin ◽  
Ning Xie ◽  
Chenglong Li ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Light Emitting Diodes ◽  
Molecular Packing ◽  
Organic Light Emitting Diodes ◽  
Imidazole Derivative ◽  
High Brightness ◽  
Light Emitting ◽  
Organic Light ◽  
Low Efficiency

A phenanthro[9,10-d]imidazole derivative with enhanced carrier mobility was developed for high brightness and low efficiency roll-off phosphorescent organic light-emitting diodes.

Thermal imprinting and vapor annealing of interfacial layers for high-performance organic light-emitting diodes

2019 ◽  
Vol 7 (33) ◽  
pp. 10281-10288
Author(s):  
Mingguang Li ◽  
Jun Wang ◽  
Ying Zhang ◽  
Yizhong Dai ◽  
Lingfeng Chen ◽  
...  
Keyword(s):  
Interfacial Layer ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Interfacial Layers ◽  
Organic Light ◽  
Vapor Annealing

A thermal imprinting and vapor annealing (TIVA) method was developed to regulate the microstructures of a PEDOT:PSS interfacial layer for high-performance OLEDs.

scholarly journals Effect of Carrier-Transporting Layer on Blue Phosphorescent Organic Light-Emitting Diodes

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 124
Author(s):  
Bo-Yen Lin ◽  
Chia-Hsun Chen ◽  
Tzu-Chan Lin ◽  
Jiun-Haw Lee ◽  
Tien-Lung Chiu
Keyword(s):  
Layer Thickness ◽  
Carrier Mobility ◽  
Light Emitting Diodes ◽  
Hole Mobility ◽  
Organic Light Emitting Diodes ◽  
Driving Voltage ◽  
High Electron ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Phosphorescent

This study presented the effects of carrier-transporting layer (CTL) on electroluminescence (EL) performance of a blue phosphorescent organic light-emitting diodes (PHOLEDs) with electron transporting host based on three kinds of electron-transporting layers (ETLs) including 3-(4-biphenyl-yl)-4-phenyl-5-(4-tert-butylphenyl)-1,2,4-triazole (TAZ), diphenyl-bis[4-(pyridin-3-yl)phenyl]silane (DPPS) and 1,3,5-tri(m-pyrid-3-yl-phenyl)benzene (TmPyPB) and two kinds of hole-transporting layers (HTLs) such as 4,4′-bis[N-1-naphthyl-N-phenyl-amino]biphenyl (NPB), 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC). The carrier recombination and exciton formation zones in blue PHOLEDs strongly depend on the carrier mobility of CTLs and the layer thickness, especially the carrier mobility. Between ETLs and HTLs, the high electron mobility of ETL results in a lower driving voltage in blue PHOLEDs than the high hole mobility of HTL did. In addition, layer thickness modulation is an effective approach to precisely control carriers and restrict carriers within the EML and avoid a leakage emission of CTL. For CTL pairs in OLEDs using the electron transporting host system, ETLs with low mobility and also HTLs with high hole mobility are key points to confine the charge in EML for efficient photon emission. These findings show that appropriate CTL pairs and good layer thickness are essential for efficient OLEDs.

Organic Light Emitting Diodes with Metallocene Compounds as Cathode Interfacial Layers

2011 ◽  
Vol 415-417 ◽  
pp. 1360-1363
Author(s):  
Keun Hee Park ◽  
Dong Hyun Yeo ◽  
Seung Sik Oh ◽  
Hoon Bea Kim ◽  
Myung Hoon Ha ◽  
...  
Keyword(s):  
Interfacial Layer ◽  
Light Emitting Diodes ◽  
Electron Injection ◽  
Organic Light Emitting Diodes ◽  
Organic Layer ◽  
Light Emitting ◽  
Interfacial Layers ◽  
Cathode Electrode ◽  
Organic Light

We reported characteristics of OLEDs with the metallocene compounds as cathode interfacial layer between the organic layer and the cathode electrode. The brightness and efficiency of OLEDs with the metallocene compound cathode interfacial layer exhibited higher performance than those of OLEDs without it. The enhancements are attributed to an improved balance of hole and electron due to increased electron injection at the organic layer and the cathode.

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