scholarly journals Modified distributed Bragg reflector for protecting organic light-emitting diode displays against ultraviolet light

2021 ◽  
Vol 29 (5) ◽  
pp. 7654
Author(s):  
Kai-Chen Lin ◽  
Wei-Kai Lee ◽  
Bo-Kai Wang ◽  
Yu-Hsing Lin ◽  
Hsien-Hung Chen ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

Fabrication and characterization of microcavity organic light-emitting diode with CaF2/ZnS distributed Bragg reflector

2020 ◽  
Vol 699 ◽  
pp. 137912 ◽  
Author(s):  
Takuya Kitabayashi ◽  
Teruyuki Asashita ◽  
Naoya Satoh ◽  
Takayuki Kiba ◽  
Midori Kawamura ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Fabrication And Characterization

GaN/AlGaN ultraviolet light-emitting diode with an embedded porous-AlGaN distributed Bragg reflector

2017 ◽  
Vol 10 (12) ◽  
pp. 122102 ◽  
Author(s):  
Guan-Jhong Wang ◽  
Bo-Syun Hong ◽  
Yi-Yun Chen ◽  
Zhong-Jie Yang ◽  
Tzong-Liang Tsai ◽  
...  
Keyword(s):  
Ultraviolet Light ◽  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Light Emitting

scholarly journals Efficient Tandem Organic Light Emitting Diode Using Organic Photovoltaic Charge Generation Layer

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Akanksha Jetly ◽  
Rajesh Mehra
Keyword(s):  
Current Efficiency ◽  
High Performance ◽  
Light Emitting Diode ◽  
Bragg Reflector ◽  
Organic Photovoltaic ◽  
Distributed Bragg Reflector ◽  
Charge Generation ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Turn On

Highly efficient tandem red OLED is proposed using planar organic heterojunction based charge generation layer (CGL) of C70 (Fullerene)/CoPc (Cobalt Phthalocyanine). The proposed charge generation layer generates charges and exhibits organic photovoltaic type (OPV) behavior in the red emitter zone which helps in slower efficiency roll-off at higher current densities. In addition an ultrathin layer of Al/LiF is used as electron injection layer (EIL) so as to enhance the injection of electrons from charge generation layer to emissive unit. It is found that the tandem red device can reach current efficiency and luminance of 26 cd/A and 26039 cd/m2 at 20 mA/cm2 and 100 mA/cm2, respectively, which is 1.663 times and 1.665 times higher than the corresponding single emitter device. Moreover, it is known that the tandem device requires double turn-on voltage than conventional devices. In this work, the turn-on voltage of red tandem device (5.85 V) is found to be less than twice the voltage of conventional device (3 V). Further with the introduction of Distributed Bragg Reflector (DBR), enhancement in current efficiency and brightness of tandem red device are observed due to high reflectance property of DBR. Thus, the effective charge generation and OPV function of proposed charge generation layer as well as remarkably high injection property of EIL layer lead to the high performance tandem OLED.

Effects of Nitridation Time on Top-emission Inverted Organic Light Emitting Diode

PIERS Online ◽  
2007 ◽  
Vol 3 (6) ◽  
pp. 821-824 ◽  
Author(s):  
Chien-Chang Tseng ◽  
Liang-Wen Ji ◽  
Yu Sheng Tsai ◽  
Fuh-Shyang Juang
Keyword(s):  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Nitridation Time ◽  
Organic Light
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