Surface Cleaning Challenges for Organic Light Emitting Diodes

2021 ◽  
Vol 314 ◽  
pp. 3-8
Author(s):  
Noel Giebink
Keyword(s):  
Light Emitting Diodes ◽  
Surface Cleaning ◽  
Organic Light Emitting Diodes ◽  
Large Area ◽  
Light Emitting ◽  
Organic Light ◽  
Organic Optoelectronic Devices ◽  
Soft Thin Film ◽  
Organic Optoelectronic

Organic optoelectronic devices such as light-emitting diodes and solar cells present unique challenges for surface cleaning and preparation because of their large area and the ‘soft’, thin film nature of the materials involved. This paper gives an introduction to this class of semiconductor devices and covers a recent example of how surface cleaning impacts the long-term reliability of organic light-emitting diodes being commercialized for solid-state lighting.

scholarly journals Efficient Solution-Processed Blue and Yellow Phosphorescent Organic Light-emitting Diodes Using Binary Blend Hosts

2021 ◽  
Author(s):  
Yuxin GUAN ◽  
Wenjing LIN ◽  
Qiannan WANG ◽  
Pengchao ZHOU ◽  
Bin WEI ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Binary Blend ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light ◽  
Single Host ◽  
Organic Optoelectronic Devices ◽  
Overall Performance ◽  
Organic Optoelectronic

The appropriate hosts of emitting layers (EMLs) play an important role in determining the overall performance of solution-processed phosphorescent organic light emitting diodes (PhOLEDs). We have investigated the effect of three species of host molecules, 1,3-bis(carbazol-9-yl)benzene (mCP), 10-(4-(5,5dimethylbenzofuro[3,2-c]acridin-13(5H)-yl)phenyl)-10-phenylanthracen-9(10H)-one (DpAn-5BzAc) and poly(9-vinylcarbazole) (PVK), on the performance of solution-processed blue and yellow PhOLEDs. We have found that compared to the widely used single-host EMLs, the devices using the binary blend of mCP: DpAn5BzAc as hosts, can achieve more efficient optoelectrical characteristics. The maximum current efficiencies of 11.84 and 16.61 have been realized for blue and yellow OLEDs, respectively. The superior electroluminescence performance for binary blend host-based PhOLEDs was attributed to the enhanced charge carrier balance and multi-component miscibility, which has a dramatic influence on the morphology of the emissive layer. These results demonstrate the great potential of the multi-hosts in solution-processed organic optoelectronic devices. The development of complementary colour OLEDs with blue and yellow can provide a simple approach to fabricate solution-processed white PhOLEDs.

scholarly journals Nanomaterials for Organic Optoelectronic Devices: Organic Light-Emitting Diodes, Organics Solar Cells and Organic Gas Sensors

2020 ◽  
Vol 61 (8) ◽  
pp. 1422-1429
Author(s):  
Nguyen Nang Dinh ◽  
Tran Si Trong Khanh ◽  
Lam Minh Long ◽  
Nguyen Duc Cuong ◽  
Nguyen Phuong Hoai Nam
Keyword(s):  
Solar Cells ◽  
Gas Sensors ◽  
Light Emitting Diodes ◽  
Optoelectronic Devices ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Organic Optoelectronic Devices ◽  
Organic Optoelectronic

Passive cooling of large-area organic light-emitting diodes

2013 ◽  
Vol 14 (8) ◽  
pp. 1939-1945 ◽  
Author(s):  
Philipp Schwamb ◽  
Thilo C.G. Reusch ◽  
Christoph J. Brabec
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Passive Cooling ◽  
Large Area ◽  
Light Emitting ◽  
Organic Light

Large area organic light emitting diodes with multilayered graphene anodes

2012 ◽  
Author(s):  
Jaehyun Moon ◽  
Joohyun Hwang ◽  
Hong Kyw Choi ◽  
Taek Yong Kim ◽  
Sung-Yool Choi ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Large Area ◽  
Light Emitting ◽  
Organic Light

A novel intermediate connector with improved charge generation and separation for large-area tandem white organic lighting devices

2014 ◽  
Vol 2 (48) ◽  
pp. 10403-10408 ◽  
Author(s):  
Lei Ding ◽  
Yan-Qiu Sun ◽  
Hua Chen ◽  
Feng-Shuo Zu ◽  
Zhao-Kui Wang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Large Area ◽  
Charge Generation ◽  
Light Emitting ◽  
Organic Light

An intermediate connector is developed for fabricating tandem white organic light-emitting diodes.

Lithium Hydride Doped Intermediate Connector for High-Efficiency and Long-Term Stable Tandem Organic Light-Emitting Diodes

2014 ◽  
Vol 6 (20) ◽  
pp. 18228-18232 ◽  
Author(s):  
Lei Ding ◽  
Xun Tang ◽  
Mei-Feng Xu ◽  
Xiao-Bo Shi ◽  
Zhao-Kui Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Light Emitting Diodes ◽  
Lithium Hydride ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light
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