Long-Range Energy Transfer and Singlet-Exciton Migration in Working Organic Light-Emitting Diodes

2016 ◽  
Vol 5 (6) ◽  
Author(s):  
Grayson L. Ingram ◽  
Carmen Nguyen ◽  
Zheng-Hong Lu
Keyword(s):  
Energy Transfer ◽  
Long Range ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Singlet Exciton ◽  
Exciton Migration ◽  
Organic Light

Probing the exciton distribution in organic light-emitting diodes using long-range energy transfer

2014 ◽  
Vol 92 (7/8) ◽  
pp. 845-848 ◽  
Author(s):  
G.L. Ingram ◽  
Y.-L. Chang ◽  
Z.H. Lu
Keyword(s):  
Energy Transfer ◽  
Long Range ◽  
Light Emitting Diodes ◽  
Material Selection ◽  
Organic Light Emitting Diodes ◽  
Large Area ◽  
Light Emitting ◽  
Organic Light ◽  
Invaluable Tool ◽  
Exciton Distribution

We present a technique to probe the exciton distribution in organic light-emitting diodes. Our method involves strategically inserting sensing layers at different locations in proximity to the emissive zone. In contrast to typical sensing layers that act as a probe of the local exciton density, the sensing layers reported here use long-range energy transfer to probe a large area around the sensing layer. We highlight the importance of material selection, such that exciton distribution could be probed without influencing the electrical and optical properties of the organic light-emitting diodes. We expect that this work will provide an invaluable tool for studying excitons in organic light-emitting diodes.

A high fluorescence rate is key for stable blue organic light-emitting diodes

2018 ◽  
Vol 6 (29) ◽  
pp. 7728-7733 ◽  
Author(s):  
Zhusen Liu ◽  
Fangyi Cao ◽  
Taiju Tsuboi ◽  
Yan Yue ◽  
Chao Deng ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Critical Factor ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Singlet Exciton ◽  
Thermally Activated ◽  
Organic Light ◽  
Exciton Annihilation ◽  
High Fluorescence

Singlet–singlet exciton annihilation (SSA) is found to be a critical factor for the decomposition of blue thermally activated delayed fluorescence (TADF) emitters in organic light-emitting diodes (OLEDs).

Exciton energy transfer and bi-exciton annihilation in the emitting layers of thermally activated delayed fluorescence-based OLEDs

2021 ◽  
Author(s):  
Hyunchul Kang ◽  
Han-Jin Ahn ◽  
Gyeong-Woo Kim ◽  
Ji-Eun Jeong ◽  
Han Young Woo ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Light Emitting Diodes ◽  
Delayed Fluorescence ◽  
Organic Light Emitting Diodes ◽  
Exciton Energy ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Thermally Activated ◽  
Organic Light ◽  
Exciton Annihilation

Understanding the exciton energy transfer and bi-exciton annihilation processes in the emitting layers (EMLs) of thermally activated delayed fluorescence (TADF)-based organic light-emitting diodes (OLEDs) is essential for improving their internal...

Degradation of fluorescent organic light emitting diodes caused by quenching of singlet and triplet excitons

2020 ◽  
Vol 8 (42) ◽  
pp. 14873-14879
Author(s):  
Duy Cong Le ◽  
Duong Dai Nguyen ◽  
Savanna Lloyd ◽  
Toshi-kazu Suzuki ◽  
Hideyuki Murata
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Singlet Exciton ◽  
Organic Light ◽  
Positively Charged ◽  
Triplet Excitons ◽  
Triplet Triplet Annihilation

The initial luminescence loss of fluorescent OLEDs utilizing triplet–triplet annihilation is not only caused by quenching of singlet exciton with neutral quenchers but also by that of triplet excitons with positively charged quenchers.

White organic light-emitting diodes based on incomplete energy transfer from perylene to rubrene

2008 ◽  
Vol 148 (5-6) ◽  
pp. 226-229 ◽  
Author(s):  
Bangdong Ding ◽  
Wenqing Zhu ◽  
Xueyin Jiang ◽  
Zhilin Zhang
Keyword(s):  
Energy Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light
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