Small molecule organic light-emitting diodes can exhibit high performance without conventional hole transport layers

2002 ◽  
Vol 81 (19) ◽  
pp. 3528-3530 ◽  
Author(s):  
Qinglan Huang ◽  
Ji Cui ◽  
He Yan ◽  
Jonathan G. C. Veinot ◽  
Tobin J. Marks
Keyword(s):  
Small Molecule ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers

Low-voltage organic light-emitting diodes by doped amorphous hole transport layers

2002 ◽  
Author(s):  
Jan Blochwitz ◽  
Martin Pfeiffer ◽  
Xiang Zhou ◽  
Ansgar Werner ◽  
Michael Hofmann ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Low Voltage ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers

scholarly journals Effects of Hole Transport Layers on the Characteristics of Organic Light Emitting Diodes

1999 ◽  
Vol 72 (12) ◽  
pp. 733-738 ◽  
Author(s):  
Shinichiro MAKI ◽  
Satoshi OKUTSU ◽  
Michiko TAMANO ◽  
Toshikazu ONIKUBO ◽  
Toshio ENOKIDA
Keyword(s):  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers

Efficient Blue Organic Light-Emitting Diodes with Graded Hole-Transport Layers

ChemPhysChem ◽  
2000 ◽  
Vol 1 (4) ◽  
pp. 207-211 ◽  
Author(s):  
David C. Müller ◽  
Thomas Braig ◽  
Heinz-Georg Nothofer ◽  
Markus Arnoldi ◽  
Markus Gross ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers

scholarly journals Thiol–yne crosslinked triarylamine hole transport layers for solution-processable organic light-emitting diodes

2020 ◽  
Vol 8 (46) ◽  
pp. 16498-16505
Author(s):  
Ksenia Kutonova ◽  
Bernd Ebenhoch ◽  
Lorenz Graf von Reventlow ◽  
Stefan Heißler ◽  
Lukas Rothmann ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers ◽  
Solution Processable

Formation of conjugated polymer thin-flim network by UV-triggered thiol–yne reaction of triarylamines and its use for hole transport in OLED.

scholarly journals Effects of Charge Transport Materials on Blue Fluorescent Organic Light-Emitting Diodes with a Host-Dopant System

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 344 ◽  
Author(s):  
Neng Liu ◽  
Sijiong Mei ◽  
Dongwei Sun ◽  
Wuxing Shi ◽  
Jiahuan Feng ◽  
...  
Keyword(s):  
Electron Transport ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Molybdenum Trioxide ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Maximum Luminance ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers

High efficiency blue fluorescent organic light-emitting diodes (OLEDs), based on 1,3-bis(carbazol-9-yl)benzene (mCP) doped with 4,4’-bis(9-ethyl-3-carbazovinylene)-1,1’-biphenyl (BCzVBi), were fabricated using four different hole transport layers (HTLs) and two different electron transport layers (ETLs). Fixing the electron transport material TPBi, four hole transport materials, including 1,1-Bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC), N,N’-Di(1-naphthyl)-N,N’-diphenyl-(1,1’-biphenyl)-4’-diamine(NPB), 4,4’-Bis(N-carbazolyl)-1,1,-biphenyl (CBP) and molybdenum trioxide (MoO3), were selected to be HTLs, and the blue OLED with TAPC HTL exhibited a maximum luminance of 2955 cd/m2 and current efficiency (CE) of 5.75 cd/A at 50 mA/cm2, which are 68% and 62% higher, respectively, than those of the minimum values found in the device with MoO3 HTL. Fixing the hole transport material TAPC, the replacement of TPBi ETL with Bphen ETL can further improve the performance of the device, in which the maximum luminance can reach 3640 cd/m2 at 50 mA/cm2, which is 23% higher than that of the TPBi device. Furthermore, the lifetime of the device is also optimized by the change of ETL. These results indicate that the carrier mobility of transport materials and energy level alignment of different functional layers play important roles in the performance of the blue OLEDs. The findings suggest that selecting well-matched electron and hole transport materials is essential and beneficial for the device engineering of high-efficiency blue OLEDs.

Organic light emitting diodes with nanostructured ultrathin layers at the interface between electron- and hole-transport layers

2005 ◽  
Vol 5 (4) ◽  
pp. 321-326 ◽  
Author(s):  
Keizo Kato ◽  
Kazuki Takahashi ◽  
Keisuke Suzuki ◽  
Takayuki Sato ◽  
Kazunari Shinbo ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Ultrathin Layers ◽  
Hole Transport Layers
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