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

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.

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Highly Efficient Deep Blue Organic Light-Emitting Diodes Based on Imidazole: Significantly Enhanced Performance by Effective Energy Transfer with Negligible Efficiency Roll-off

ACS Applied Materials & Interfaces ◽

10.1021/acsami.6b10004 ◽

2016 ◽

Vol 8 (42) ◽

pp. 28771-28779 ◽

Cited By ~ 75

Author(s):

Tong Shan ◽

Yulong Liu ◽

Xiangyang Tang ◽

Qing Bai ◽

Yu Gao ◽

...

Keyword(s):

Energy Transfer ◽

Light Emitting Diodes ◽

Organic Light Emitting Diodes ◽

Effective Energy ◽

Light Emitting ◽

Highly Efficient ◽

Deep Blue ◽

Organic Light ◽

Effective Energy Transfer

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High efficiency fluorescent white OLEDs based on DOPPP

Modern Physics Letters B ◽

10.1142/s0217984917502207 ◽

2017 ◽

Vol 31 (23) ◽

pp. 1750220 ◽

Cited By ~ 2

Author(s):

Gang Zhang ◽

Chen Chen ◽

Jihui Lang ◽

Lina Zhao ◽

Wenlong Jiang

Keyword(s):

High Efficiency ◽

Thermal Evaporation ◽

Maximum Luminance ◽

Thermal Evaporation Method ◽

Light Emitting ◽

Light Emitting Devices ◽

Organic Light ◽

Maximum Current ◽

20 Nm ◽

Better Than

The white organic light-emitting devices (WOLED) with the structures of ITO/m-MTDATA (10 nm)/NPB (30 nm)/Rubrene (0.2 nm)/DOPPP (x nm)/TAz (10 nm)/Alq3 (30 nm)/LiF (0.5 nm)/Al and ITO/NPB (30 nm)/DPAVBi:Rubrene (2 wt.%, 20 nm)/ DOPPP (x nm)/TAZ (10 nm)/Alq3 (30 nm)/LiF (0.5 nm)/Al (100 nm) have been fabricated by the vacuum thermal evaporation method. The results show that the chroma of the non-doped device is the best and the color coordinates are in the range of white light. The maximum luminance is 12,750 cd/m2 and the maximum current efficiency is 8.55 cd/A. The doped device A has the maximum luminance (16,570 cd/m2), when the thickness of blue layer DOPPP is 25 nm, and the doped device B achieves the highest efficiency (10.47 cd/A), when the thickness of DOPPP is 15 nm. All the performances of the doped devices are better than the non-doped one. The results demonstrate that the doped structures can realize the energy transfer and then improve the performance of the device effectively.

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Theoretical investigation of dihydroacridine and diphenylsulphone derivatives as thermally activated delayed fluorescence emitters for organic light-emitting diodes

RSC Advances ◽

10.1039/c5ra04929f ◽

2015 ◽

Vol 5 (64) ◽

pp. 51586-51591 ◽

Cited By ~ 13

Author(s):

Xiaguang Zhang ◽

Wei Shen ◽

Dongmei Zhang ◽

Yongzhen Zheng ◽

Rongxing He ◽

...

Keyword(s):

Energy Transfer ◽

Theoretical Investigation ◽

Delayed Fluorescence ◽

Organic Light Emitting Diodes ◽

Effective Energy ◽

Thermally Activated Delayed Fluorescence ◽

Light Emitting ◽

Thermally Activated ◽

Organic Light ◽

Effective Energy Transfer

Effective energy transfer between host and emitter, which includes singlet–singlet, singlet–triplet and triplet–triplet transfer, would occur.

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

Physical Chemistry Chemical Physics ◽

10.1039/d1cp00109d ◽

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.

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