scholarly journals High brightness formamidinium lead bromide perovskite nanocrystal light emitting devices

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Ajay Perumal ◽  
Sushant Shendre ◽  
Mingjie Li ◽  
Yong Kang Eugene Tay ◽  
Vijay Kumar Sharma ◽  
...  
Keyword(s):  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Lead Bromide

High-brightness perovskite quantum dot light-emitting devices using inkjet printing

2021 ◽  
Vol 93 ◽  
pp. 106168
Author(s):  
Chunbo Zheng ◽  
Xin Zheng ◽  
Chen Feng ◽  
Songman Ju ◽  
Zhongwei Xu ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Inkjet Printing ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices

Green–white color switchable light-emitting devices based on laterally fused cesium lead bromide perovskite nanowires

2021 ◽  
Vol 119 (3) ◽  
pp. 033505
Author(s):  
Wenhui Wu ◽  
Tianyuan Liang ◽  
Huaxin Wu ◽  
Baolu Fan ◽  
Yumeng Zhang ◽  
...  
Keyword(s):  
Light Emitting ◽  
Light Emitting Devices ◽  
Lead Bromide

scholarly journals Pyridinyl-Carbazole Fragments Containing Host Materials for Efficient Green and Blue Phosphorescent OLEDs

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4615
Author(s):  
Dovydas Blazevicius ◽  
Daiva Tavgeniene ◽  
Simona Sutkuviene ◽  
Ernestas Zaleckas ◽  
Ming-Ruei Jiang ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Power Efficiency ◽  
Triplet Energy ◽  
New Host ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Host Materials

Pyridinyl-carbazole fragments containing low molar mass compounds as host derivatives H1 and H2 were synthesized, investigated, and used for the preparation of electro-phosphorescent organic light-emitting devices (PhOLEDs). The materials demonstrated high stability against thermal decomposition with the decomposition temperatures of 361–386 °C and were suitable for the preparation of thin amorphous and homogeneous layers with very high values of glass transition temperatures of 127–139 °C. It was determined that triplet energy values of the derivatives are, correspondingly, 2.82 eV for the derivative H1 and 2.81 eV for the host H2. The new derivatives were tested as hosts of emitting layers in blue, as well as in green phosphorescent OLEDs. The blue device with 15 wt.% of the iridium(III)[bis(4,6-difluorophenyl)-pyridinato-N,C2′]picolinate (FIrpic) emitter doping ratio in host material H2 exhibited the best overall characteristics with a power efficiency of 24.9 lm/W, a current efficiency of 23.9 cd/A, and high value of 10.3% of external quantum efficiency at 100 cd/m2. The most efficient green PhOLED with 10 wt% of Ir(ppy)3 {tris(2-phenylpyridine)iridium(III)} in the H2 host showed a power efficiency of 34.1 lm/W, current efficiency of 33.9 cd/A, and a high value of 9.4% for external quantum efficiency at a high brightness of 1000 cd/m2, which is required for lighting applications. These characteristics were obtained in non-optimized PhOLEDs under an ordinary laboratory atmosphere and could be improved in the optimization process. The results demonstrate that some of the new host materials are very promising components for the development of efficient phosphorescent devices.

scholarly journals Al atomistic surface modulation on colloidal gradient quantum dots for high-brightness and stable light-emitting devices

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jae-Sung Lee ◽  
Byoung-Ho Kang ◽  
Sae-Wan Kim ◽  
Jin-Beom Kwon ◽  
Ok-Sik Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Surface Modulation

Solution-processable cyclometalated gold(III) complexes for high-brightness phosphorescent white organic light-emitting devices

2020 ◽  
Vol 55 (23) ◽  
pp. 9686-9694
Author(s):  
Wai-Lung Cheung ◽  
Shiu-Lun Lai ◽  
Wing-Kei Kwok ◽  
Man-Chung Tang ◽  
Chin-Ho Lee ◽  
...  
Keyword(s):  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Solution Processable ◽  
Organic Light Emitting Devices

Non-doped luminescent material based organic light-emitting devices displaying high brightness under very low driving voltage

2016 ◽  
Vol 4 (29) ◽  
pp. 7013-7019 ◽  
Author(s):  
Chenglong Li ◽  
Jinbei Wei ◽  
Xiaoxian Song ◽  
Kaiqi Ye ◽  
Hongyu Zhang ◽  
...  
Keyword(s):  
Driving Voltage ◽  
Luminescent Material ◽  
High Brightness ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Two phenanthro[9,10-d]imidazole (PI) derivatives, DPAA-PPI and tBuDPAA-PPI, were synthesized. The non-doped OLEDs with DPAA-PPI and tBuDPAA-PPI as emitters displayed very low driving voltages, high brightness and maximum external quantum efficiencies (EQE) of 5.2% and 4.1%, respectively.

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