Probing buried organic layers in organic light-emitting diodes under operation by electric-field-induced doubly resonant sum-frequency generation spectroscopy

2012 ◽  
Vol 101 (7) ◽  
pp. 073304 ◽  
Author(s):  
T. Miyamae ◽  
N. Takada ◽  
T. Tsutsui
Keyword(s):  
Electric Field ◽  
Light Emitting Diodes ◽  
Sum Frequency Generation ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Sum Frequency ◽  
Organic Layers ◽  
Organic Light ◽  
Sum Frequency Generation Spectroscopy ◽  
Frequency Generation

The internal electric field distribution in bilayer organic light emitting diodes

2002 ◽  
Vol 3 (3-4) ◽  
pp. 129-141 ◽  
Author(s):  
Simon J Martin ◽  
Geraldine L.B Verschoor ◽  
Matthew A Webster ◽  
Alison B Walker
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Light Emitting Diodes ◽  
Electric Field Distribution ◽  
Organic Light Emitting Diodes ◽  
Internal Electric Field ◽  
Light Emitting ◽  
Organic Light

Fine-tuning the thicknesses of organic layers to realize high-efficiency and long-lifetime blue organic light-emitting diodes

2012 ◽  
Vol 21 (8) ◽  
pp. 083303 ◽  
Author(s):  
Jian-Ning Yu ◽  
Min-Yan Zhang ◽  
Chong Li ◽  
Yu-Zhu Shang ◽  
Yan-Fang Lü ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Fine Tuning ◽  
Light Emitting ◽  
Organic Layers ◽  
Organic Light ◽  
Long Lifetime

Effect of the electric field during annealing of organic light emitting diodes for improving its on/off ratio

2016 ◽  
Vol 18 (4) ◽  
pp. 2747-2755 ◽  
Author(s):  
Rahul K. Sharma ◽  
Monica Katiyar ◽  
I. V. Kameshwar Rao ◽  
K. N. Narayanan Unni ◽  
Deepak Deepak
Keyword(s):  
Electric Field ◽  
Reverse Bias ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Fast Cooling

(i) The OLED as fabricated (standard). (ii) An OLED annealed, fast cooling, no reverse bias. (iii) As in (ii) except reverse bias during annealing, but not cooling. (iv) As in (iii) with reverse bias also during cooling. (v) As in (iii), except that cooling is slower. (vi) As in (iv), except that cooling is slower.

All Solution-Processed Quintuple-Layer Organic Light-Emitting Diodes Containing Organic-Inorganic Hybrid Active Layers Fabricated by Sol-Gel Method

2018 ◽  
Vol 777 ◽  
pp. 113-120
Author(s):  
Yusuke Jitsui ◽  
Naoki Ohtani
Keyword(s):  
Thin Films ◽  
Active Layer ◽  
Light Emitting Diodes ◽  
Sol Gel ◽  
Organic Light Emitting Diodes ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Gel Method ◽  
Organic Layers ◽  
Organic Light

Organic-inorganic hybrid thin films were fabricated using the sol-gel method and applied to multi-layer organic light-emitting diodes (OLEDs) as an active layer. A polymer emissive material poly (9,9-dioctyl-fluorene-co-N-4-butylphenyl-diphenylamine) (TFB) was solved in a sol-gel reaction accelerator perhydropolysilazane (PHPS). The PHPS solution turned into SiO2 by humidity treatment. Thus, the TFB:PHPS solution became SiO2 thin films in which the organic emissive material TFB was dispersed. All the organic layers of OLEDs can be fabricated using solution-process because the organic-inorganic hybrid active layer is not soluble with the adjacent organic layers. Consequently, we successfully fabricated quintuple-layer OLEDs consisting of the following five organic films: hole-injection, hole-transporting, active (organic-inorganic hybrid) electron-transporting, and electron-injection layers. Electroluminescence (EL) was successfully observed.

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