scholarly journals Efficient hybrid white organic light-emitting diodes for application of triplet harvesting with simple structure

2016 ◽  
Vol 69 (3) ◽  
pp. 328-334 ◽  
Author(s):  
Kyo Min Hwang ◽  
Song Eun Lee ◽  
Sungkyu Lee ◽  
Han Kyu Yoo ◽  
Hyun Jung Baek ◽  
...  
Keyword(s):  
Simple Structure ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Triplet Harvesting

Four color stacked white organic light-emitting diodes utilizing the concept of triplet harvesting

2011 ◽  
Vol 1286 ◽  
Author(s):  
Th. C. Rosenow ◽  
S. Olthof ◽  
S. Reineke ◽  
B. Lüssem ◽  
K. Leo
Keyword(s):  
Light Emitting Diodes ◽  
Blue Emission ◽  
Organic Light Emitting Diodes ◽  
Light Sources ◽  
Emission Layer ◽  
Light Emitting ◽  
Organic Light ◽  
Blue Emitters ◽  
Color Rendering ◽  
Triplet Harvesting

ABSTRACTOrganic light-emitting diodes (OLEDs) are developing into a competitive alternative to conventional light sources. Nevertheless, OLEDs need further improvement in terms of efficiency and color rendering for lighting applications. Fluorescent blue emitters allow deep blue emission and high stability, while phosphorescent blue emitter still suffer from insufficient stability. The concept of triplet harvesting is the key for achieving internal quantum efficiencies up to 100 % and simultaneously benefiting from the advantages of fluorescent blue emitters. Here, we present a stacked OLED consisting of two units comprising four different emitters in total. The first unit takes advantage of the concept of triplet harvesting and combines the light emission of a fluorescent blue and a phosphorescent red emitter. The second unit emits light from a single emission layer consisting of a matrix doped with phosphorescent green and yellow emitters. With this approach, we reach white color coordinates close to the standard illuminant A and a color rendering index of above 75. The presented devices are characterized by high luminous efficacies of above 30 lm/W on standard glass substrates without outcoupling enhancement.

Efficient triplet harvesting in fluorescence–TADF hybrid warm-white organic light-emitting diodes with a fully non-doped device configuration

2018 ◽  
Vol 6 (15) ◽  
pp. 4257-4264 ◽  
Author(s):  
Juan Zhao ◽  
Zhan Yang ◽  
Xiaojie Chen ◽  
Zongliang Xie ◽  
Tiantian Liu ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
White Oleds ◽  
Triplet Harvesting

An efficient triplet harvesting strategy provided for fluorescence–TADF hybrid white OLEDs with a fully non-doped device configuration.

Red Phosphorescent Organic Light-Emitting Diodes Based on the Simple Structure

2012 ◽  
Vol 12 (5) ◽  
pp. 4190-4193 ◽  
Author(s):  
Ji Hyun Seo ◽  
Seok Jae Lee ◽  
Bo Young Kim ◽  
Eun Young Choi ◽  
Wone Keun Han ◽  
...  
Keyword(s):  
Simple Structure ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light

Triplet Harvesting by a Fluorescent Emitter Using a Phosphorescent Sensitizer for Blue Organic-Light-Emitting Diodes

2018 ◽  
Vol 11 (1) ◽  
pp. 26-30 ◽  
Author(s):  
Hyun-Gu Kim ◽  
Hyun Shin ◽  
Yeon Hee Ha ◽  
Ran Kim ◽  
Soon-Ki Kwon ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Triplet Harvesting

Fluorescent and Phosphorescent Emitting Layers by Utilizing a Triplet Harvesting in Hybrid White Organic Light-Emitting Diodes

2016 ◽  
Vol 16 (11) ◽  
pp. 11783-11787
Author(s):  
Kyo Min Hwang ◽  
Song Eun Lee ◽  
Jae Woo Lee ◽  
Han Kyu Yoo ◽  
Sungkyu Lee ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Triplet Harvesting
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