Highly Efficient Organic Light-Emitting Diode Using A Low Refractive Index Electron Transport Layer

2017 ◽  
Vol 5 (11) ◽  
pp. 1700197 ◽  
Author(s):  
Amin Salehi ◽  
Szuheng Ho ◽  
Ying Chen ◽  
Cheng Peng ◽  
Hartmut Yersin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Electron Transport ◽  
Light Emitting Diode ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Highly Efficient ◽  
Organic Light ◽  
Low Refractive Index

The Study of Organic Light Emitting Diode with a Doped Electron Transport Layer

2007 ◽  
Author(s):  
Cheng-Chieh Hou ◽  
Ruei-Shiang Shieh ◽  
Shui-Hsiang Su ◽  
Chung-Ming Wu ◽  
Meiso Yokoyama
Keyword(s):  
Electron Transport ◽  
Light Emitting Diode ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

Enhancement in electron transport and exciton confinement in OLEDs: role of n-type doping and electron blocking layers

2019 ◽  
Vol 86 (1) ◽  
pp. 10201 ◽  
Author(s):  
Anjaly Soman ◽  
K.N. Narayanan Unni
Keyword(s):  
Electron Transport ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
The One

Doped transport layers are essential for achieving high efficiency in organic light emitting diodes (OLEDs). We have studied the effect of doping the electron transport layer (ETL), tris-(8-hydroxyquinoline) aluminum (Alq3) with different percentages of lithium fluoride (LiF). We have also studied the effect of different electron blocking layers (EBLs) such as Tris (4-carbazoyl-9-ylphenyl)amine (TCTA), N,N'-Bis (naphthalen-1-yl)-N,N'-bis(phenyl)-benzidine(NPB), and Di-[4-(N,N-di-p-tolyl-amino)-phenyl]cyclohexane (TAPC) in an Alq3:2,3,6,7-Tetrahydro-1,1,7,7,-tetramethyl-1H, 5H, 11H −10-(2-benzothiazolyl)quinolizino[9,9a, 1gh] coumarin (C545T) based organic light emitting diode (OLED) with optimized ETL doping. TCTA was found to effectively block the electrons and influence the recombination region in the process. At a brightness of 1000 cd/m2, an improvement of 27.8% was observed in external quantum efficiency (EQE) for the device with TCTA as the EBL and doped Alq3 as the ETL, compared to the one with just NPB as both EBL and HTL.

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