scholarly journals Efficient waveguide mode extraction in white organic light emitting diodes using ITO-anodes with integrated MgF_2-columns

2012 ◽  
Vol 20 (6) ◽  
pp. 6170 ◽  
Author(s):  
Tobias Bocksrocker ◽  
Florian Maier-Flaig ◽  
Carsten Eschenbaum ◽  
Uli Lemmer
Keyword(s):  
Waveguide Mode ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Mode Extraction

scholarly journals Tackling light trapping in organic light-emitting diodes by complete elimination of waveguide modes

2021 ◽  
Vol 7 (26) ◽  
pp. eabg0355
Author(s):  
Changyeong Jeong ◽  
Yong-Bum Park ◽  
L. Jay Guo
Keyword(s):  
Indium Tin Oxide ◽  
Waveguide Mode ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Efficiency Improvement ◽  
Light Emitting ◽  
Waveguide Modes ◽  
Organic Light ◽  
Ag Film

Conventional waveguide mode decoupling methods for organic light-emitting diodes (OLEDs) are typically not scalable and increase fabrication complexity/cost. Indium-tin-oxide–free transparent anode technologies showed efficiency improvement without affecting other device properties. However, previous works lack rigorous analysis to understand the efficiency improvement. Here, we introduced an ultrathin silver (Ag) film as transparent electrode and conducted systematic modal analysis of OLEDs and report that waveguide mode can be completely eliminated by designing an OLED structure that is below the cutoff thickness of waveguide modes. We also experimentally verified the waveguide mode removal in organic waveguides with the help of index-matching fluid and prism. The negative permittivity, extremely thin thickness (~5 nanometers), and highly conductive properties achieved by a uniform copper-seeded Ag film can suppress waveguide mode formation, enhancing external quantum efficiency without compromising any other characteristics of OLEDs, which paves the way for cost-effective high-efficiency OLEDs in current display industry.

Large-scale patterning of indium tin oxide electrodes for guided mode extraction from organic light-emitting diodes

2008 ◽  
Vol 104 (9) ◽  
pp. 093111 ◽  
Author(s):  
Ulf Geyer ◽  
Julian Hauss ◽  
Boris Riedel ◽  
Sebastian Gleiss ◽  
Uli Lemmer ◽  
...  
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Large Scale ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Guided Mode ◽  
Oxide Electrodes ◽  
Organic Light ◽  
Mode Extraction

Fabrication and Characterization of Blue Organic Light-emitting Diodes

2011 ◽  
Author(s):  
Merric Srour ◽  
Richard Fu ◽  
Steven Blomquist ◽  
Jianmin Shi ◽  
Eric Forsythe ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Fabrication And Characterization

Accurate Vapor Pressure Prediction for Large Organic Molecules: Application to Materials Utilized in Organic Light-Emitting Diodes

2020 ◽  
Vol 16 (9) ◽  
pp. 5845-5851
Author(s):  
Alexander V. Yakubovich ◽  
Won-Joon Son ◽  
Ohyun Kwon ◽  
Hyeonho Choi ◽  
Byoungki Choi ◽  
...  
Keyword(s):  
Vapor Pressure ◽  
Organic Molecules ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light
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