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
Author(s):  
Hyunchul Kang ◽  
Han-Jin Ahn ◽  
Gyeong-Woo Kim ◽  
Ji-Eun Jeong ◽  
Han Young Woo ◽  
...  

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...


2008 ◽  
Vol 8 (9) ◽  
pp. 4579-4583
Author(s):  
You-Hyun Kim ◽  
Su-Hwan Lee ◽  
Hyun-Soo Yoon ◽  
Jae-Yoon Choi ◽  
Sung Sik Shin ◽  
...  

Efficiency improvement and color optimization of white organic light-emitting diodes (WOLEDs) were achieved via employing blue host DPVBi doped with blue fluorescent, BCzVBi. The structure of high efficient WOLED device was composed of ITO/NPB/DPVBi:BCzVBi-6%/MADN:DCM2-0.5%/Bphen/Liq/Al. WOLED doped by blue fluorescent BCzVBi exhibits 6.19 cd/A of luminous efficiency and 15400 cd/m2 of maximum luminescence. It also performs 480 cd/m2 of luminance at 5.7 V and 15,400 cd/m2 at 12.9 V with CIEx,y coordinates of (0.33, 0.32) and (0.32, 0.32), respectively. Hole carrier and energy transfer from DPVBi to BCzVBi are proposed to explain the observed phenomena.


2006 ◽  
Vol 37 (11) ◽  
pp. 1325-1328 ◽  
Author(s):  
Fuxiang Wei ◽  
Xiaobo Zhang ◽  
Jin Cao ◽  
M.A. Khan ◽  
Wenqing Zhu ◽  
...  

2017 ◽  
Vol 26 (2) ◽  
pp. 14
Author(s):  
Reynaldo Reyes ◽  
Hermi F. Brito ◽  
Marco Cremona

En este trabajo reportamos el uso de la espectroscopia de retrodispersión de Rutherford (RBS) para el análisis, búsqueda de contaminantes y medición del espesor de película delgadas de organo-lantánido [SmxEuy(TTA)3(TPPO)2] utilizadas como capas emisoras de luz en diodos orgánicos emisores de luz (OLEDs).También se hace un estudio de fotoluminiscencia de las películas de [SmxEuy(TTA)3(TPPO)2], y se encuentra que la emisión de luz de la mezcla se realiza independientemente por las moléculas [Sm(TTA)3(TPPO)2] y [Eu(TTA)3(TPPO)2], no observándose una transferencia intermolecular de energía entre dichas moléculas. Palabras clave.-Samario, Europio, Fotoluminescencia, RBS, OLED. ABSTRACTIn this work we report the use of Rutherford backscattering spectroscopy (RBS) for the analysis, search of contaminants and measurements of thickness of the organic-lanthanide [SmxEuy(TTA)3(TPPO)2] thin films used as light-emitting layer in organic light-emitting diodes (OLEDs). Also a study of photoluminescence of the films [SmxEuy(TTA)3(TPPO)2] is realized, and it is found that the emission of light of the mixture is carried out independently for the molecules [Sm(TTA)3(TPPO)2] and [Eu(TTA)3(TPPO)2], not being observed a intermolecular energy transfer between these molecules. Keywords.- : Samarium, Europium, Photoluminescence, RBS, OLED .


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