Improvement of color purity and electrical characteristics by co-doping method for flexible red-light organic light emitting devices

Displays ◽  
2009 ◽  
Vol 30 (4-5) ◽  
pp. 164-169 ◽  
Author(s):  
C.J. Huang ◽  
T.H. Meen ◽  
S.L. Wu ◽  
C.C. Kang
Keyword(s):  
Red Light ◽  
Color Purity ◽  
Electrical Characteristics ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Co Doping ◽  
Organic Light ◽  
Organic Light Emitting Devices

Driving and Application of Blue Light Organic Light Emitting Devices

2019 ◽  
Vol 11 (5) ◽  
pp. 711-717
Author(s):  
Hongbo Liu ◽  
Minghui Liu ◽  
Lin Cong ◽  
Lizhong Wang ◽  
Tao Huang ◽  
...  
Keyword(s):  
Blue Light ◽  
High Efficiency ◽  
Low Voltage ◽  
Red Light ◽  
Portable Devices ◽  
Driving Voltage ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

The DPVBi (4,4′-bis(2,2-diphenylvinyl-1,1′-biphenyl) is a blue-light organic fluorescence doped material, which can be used as a hole barrier layer or a luminescent layer for fabricating organic light-emitting devices. A blue light device with stable color stability and high efficiency was prepared by co-doping blue light dye DPVBi and red light dye DCJTB as light-emitting layer. In order to prevent the infiltration of O2 and moisture inside the device from affecting the luminescence lifetime of the device, the device was encapsulated by atomic layer deposition. Since the driving voltage of the organic light-emitting device is generally above 5 V and the power consumption is low, in order to facilitate driving with a low voltage, a boost driving circuit based on the XL6009 chip was designed. The driver of the fabricated blue-light device was tested. The results showed that circuit had low-voltage drive characteristics and could be widely used in small toys, lighting, and portable devices. Through the test to achieve the desired goal, the requirements of low voltage and low energy consumption were realized, and the life of the light-emitting device can be tested, which has certain practicability and reference value.

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

The Preparation of Alq3/CuPc Heterojunction Organic Electroluminesence Diodes

2014 ◽  
Vol 981 ◽  
pp. 863-866
Author(s):  
Yan Hong Wu ◽  
Yue Shan ◽  
Dong Xing Wang ◽  
Cai Min Meng ◽  
Yan Wei Yang ◽  
...  
Keyword(s):  
Light Intensity ◽  
Luminescence Spectrum ◽  
Green Light ◽  
Vacuum Evaporation ◽  
Electrical Characteristics ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Dc Sputtering ◽  
Organic Light ◽  
Organic Light Emitting Devices

With the method of vacuum dc sputtering and vacuum evaporation,the green light double organic light-emitting devices (OLED) of ITO/CuPc/Alq3 / Al structure were prepared, the electrical characteristics and electroluminescent properties of the device were measured. Devices show good luminous performance, light intensity reaches 600000 cps, when the wavelength of luminescence spectrum is 510 nm, luminance is 2641I/a.u.

scholarly journals Achieving efficient violet-blue electroluminescence with CIEy 6% from naphthyl-linked phenanthroimidazole–carbazole hybrid fluorophores

2017 ◽  
Vol 8 (5) ◽  
pp. 3599-3608 ◽  
Author(s):  
Wen-Cheng Chen ◽  
Yi Yuan ◽  
Shao-Fei Ni ◽  
Qing-Xiao Tong ◽  
Fu-Lung Wong ◽  
...  
Keyword(s):  
High Performance ◽  
Blue Emission ◽  
Color Purity ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Naphthyl-linked donor–π–acceptor fluorophores were utilized to achieve high performance and good color purity violet-blue emission in organic light-emitting devices (OLEDs).

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