scholarly journals Almost complete radiationless energy transfer from excited triplet state of a dim phosphor to a covalently linked adjacent fluorescent dye in purely organic tandem luminophores doped into PVA matrix

2019 ◽  
Vol 7 (22) ◽  
pp. 6571-6577 ◽  
Author(s):  
Joana Jõgela ◽  
Asko Uri ◽  
Lars-Olof Pålsson ◽  
Erki Enkvist
Keyword(s):  
Energy Transfer ◽  
Triplet State ◽  
General Phenomenon ◽  
Excited Triplet ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Radiationless Energy Transfer ◽  
Organic Phosphors ◽  
Covalently Linked

Efficient harvesting of energy of the triplet exited state of dim organic phosphors by conjugated fluorophores is a general phenomenon that would be applicable for construction of novel photoluminescence-based sensors and organic light emitting devices.

The study of intramolecular decay and intermolecular energy transfer for phosphorescent organic light-emitting devices

2021 ◽  
Vol 23 (12) ◽  
pp. 7495-7503
Author(s):  
Wanlin Cai ◽  
Kai Ren ◽  
Ancong Zhao ◽  
Xiulan Wu ◽  
Rongxing He ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rational Design ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Intermolecular Energy ◽  
Intermolecular Energy Transfer ◽  
Organic Light Emitting Devices

Compared to the PtOO7-based system, the greater EQE of the PtON7-based system is mainly governed by the stronger energy transfer efficiency (ηEET); thus, it is necessary to evaluate ηEET from hosts to guests for the rational design of OLEDs.

Combinatorial Fabrication and Screening of Organic Light-Emitting Device Arrays

2005 ◽  
Vol 894 ◽  
Author(s):  
Joseph Shinar ◽  
Ruth Shinar
Keyword(s):  
Energy Transfer ◽  
Hole Transport ◽  
Luminescent Materials ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Basic Properties ◽  
Organic Light ◽  
Hole Transport Layers ◽  
Förster Energy Transfer ◽  
White Oled

AbstractStudies of combinatorial fabrication and screening of organic light-emitting devices (OLEDs) are reviewed. These studies include screening of luminescent materials, electron and hole transport layers, lower-gap emitting guest dopants in small molecular emitters, and electronically doped polymeric anodes. The review focuses on screening of 2-dimensional (2-d) small molecular UV/violet arrays, 1-d blue-to-red arrays, and 1-d intense white OLED libraries, and briefly describes arrays fabricated to study Förster energy transfer in guest-host OLEDs. It demonstrates that combinatorial fabrication of OLEDs has become a powerful tool for screening OLED materials and configurations, and for studying their basic properties.

Improvement of efficiency and color purity utilizing two-step energy transfer for red organic light-emitting devices

2002 ◽  
Vol 81 (16) ◽  
pp. 2935-2937 ◽  
Author(s):  
Jing Feng ◽  
Feng Li ◽  
Wenbao Gao ◽  
Gang Cheng ◽  
Wenfa Xie ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Color Purity ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

HIGHLY EFFICIENT BLUE ELECTROLUMINESCENCE BASED ON AGGREGATION INDUCED EMISSION MATERIAL AS THE HOST

2013 ◽  
Vol 01 (03) ◽  
pp. 1340012
Author(s):  
XIAO YANG ◽  
SHAOQING ZHUANG ◽  
LEI WANG ◽  
JING HUANG ◽  
ZHEN LI
Keyword(s):  
Energy Transfer ◽  
High Efficiency ◽  
Effective Energy ◽  
Maximum Luminance ◽  
Device Structure ◽  
Light Emitting ◽  
Aggregation Induced Emission ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Effective Energy Transfer

High-efficiency blue organic light-emitting devices (OLEDs) have been fabricated using tetraphenylethene (TPE)-based conjugated molecule TPE-2Cz, which exhibited aggregation induced emission (AIE) properties, as blue host material and BUBD-1 as dopant emitter. With an optimized device structure, the effective energy transfer from the AIE host to BUBD-1 was achieved. The optimized device exhibits the peak EL efficiencies of 10.3 cd/A, 5.4% and 9.8 lm/W, with Commission Internationale de l'Eclairage coordinates of (0.15, 0.31) and a maximum luminance of 14550 cd/m2.

Effect of energy transfer on electroluminescent performance in blend-layer organic light-emitting devices

2008 ◽  
Vol 128 (9) ◽  
pp. 1523-1527 ◽  
Author(s):  
Shuping Zhang ◽  
Zhe Lü ◽  
Yajing Peng ◽  
Yuqiang Liu ◽  
Yanqiang Yang
Keyword(s):  
Energy Transfer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices
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