Observation of low voltage driven green emission from erbium doped Ga2O3 light-emitting devices

2016 ◽  
Vol 109 (2) ◽  
pp. 022107 ◽  
Author(s):  
Zhengwei Chen ◽  
Xu Wang ◽  
Fabi Zhang ◽  
Shinji Noda ◽  
Katsuhiko Saito ◽  
...  
Keyword(s):  
Low Voltage ◽  
Green Emission ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Erbium Doped

Highly Efficient Multifunctional Phosphorescent Dendrimers Consisting of an Iridium-Complex Core and Charge-Transporting Dendrons for Organic Light-Emitting Devices

2005 ◽  
Vol 871 ◽  
Author(s):  
Toshimitsu Tsuzuki ◽  
Nobuhiko Shirasawa ◽  
Toshiyasu Suzuki ◽  
Shizuo Tokito
Keyword(s):  
First Generation ◽  
Green Emission ◽  
Iridium Complex ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Hole Transporting ◽  
Complex Core ◽  
Bright Green ◽  
Organic Light Emitting Devices

AbstractWe report a novel class of emitting materials for use in the organic light-emitting devices (OLEDs): multifunctional phosphorescent dendrimers that have a phosphorescent core and have charge transporting dendrons. We have synthesized first-generation and second-generation dendrimers consisting of a fac-tris(2-phenylpyridine)iridium [Ir(ppy)3] core and hole transporting phenylcarbazole-based dendrons. Smooth amorphous films of these dendrimers were formed by spin-coating them from solutions. The OLEDs using the dendrimer exhibited bright green or yellowish-green emission from the Ir(ppy)3 core. The external quantum efficiency of the OLED using the mixture film of the first-generation dendrimer and an electron-transporting material was as high as 7.6%.

Synthesis and Properties of Novel Hole-Transporting Materials Containing Triphenylamine and Bipyridine Units

2013 ◽  
Vol 690-693 ◽  
pp. 619-622
Author(s):  
Hai Jun Lv ◽  
Yi Feng Yu ◽  
Lei Liu ◽  
Ai Bing Chen ◽  
Zhi Chao Hu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Green Emission ◽  
High Thermal Stability ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Hole Transporting ◽  
Organic Light Emitting Devices ◽  
Hole Transporting Materials

Novel hole-transporting materials (M1, M2) containing triphenylamine and dipyridine units have been synthesized and characterized. Two compounds have excellent solubility in common solvents. The optical, electrochemical and thermal properties of the materials were studied in detail. The results show that two compounds have green emission in dichloromethane, high thermal stability and proper HOMO levels. The properties of compounds M1 and M2 indicate that two compounds are candidates for the application in Organic light-emitting devices as hole-transporting materials.

scholarly journals Electroluminescence from light-emitting devices based on erbium-doped ZnO/n-Si heterostructures: Enhancement effect of fluorine co-doping

2019 ◽  
Vol 27 (21) ◽  
pp. 30919 ◽  
Author(s):  
Jinxin Chen ◽  
Weijun Zhu ◽  
Yuhan Gao ◽  
Deren Yang ◽  
Xiangyang Ma
Keyword(s):  
Enhancement Effect ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Co Doping ◽  
Erbium Doped ◽  
Doped Zno

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.

Low voltage efficient simple p-i-n type electrophosphorescent green organic light-emitting devices

2009 ◽  
Vol 94 (13) ◽  
pp. 133303 ◽  
Author(s):  
Sun Young Kim ◽  
Woo Sik Jeon ◽  
Tae Jin Park ◽  
Ramchandra Pode ◽  
Jin Jang ◽  
...  
Keyword(s):  
Low Voltage ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Effects of Green Emission on the Performance of White Organic Light-Emitting Devices and Their Electroluminescent Characteristics

2011 ◽  
Vol 115 (49) ◽  
pp. 24341-24346 ◽  
Author(s):  
Hua-Ping Lin ◽  
Fan Zhou ◽  
Jun Li ◽  
Xiao-Wen Zhang ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Green Emission ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Si-based erbium-doped light-emitting devices

2006 ◽  
Vol 121 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Maria Eloisa Castagna ◽  
Anna Muscará ◽  
Salvatore Leonardi ◽  
Salvatore Coffa ◽  
Liliana Caristia ◽  
...  
Keyword(s):  
Light Emitting ◽  
Light Emitting Devices ◽  
Erbium Doped
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