A correlation between small-molecule dependent nanomorphology and device performance of organic light-emitting diodes with ternary blend emitting layers

2017 ◽  
Vol 5 (37) ◽  
pp. 9761-9769 ◽  
Author(s):  
Francis Okello Odongo Ngome ◽  
Young-Tae Kim ◽  
Hyeon-Dong Lee ◽  
Young-Hoon Kim ◽  
Tae-Woo Lee ◽  
...  
Keyword(s):  
Small Molecule ◽  
Light Emitting Diodes ◽  
Solvent Mixture ◽  
Organic Light Emitting Diodes ◽  
Ternary Blend ◽  
Device Performance ◽  
Light Emitting ◽  
Organic Light

We successfully control the Ir(ppy)3 needle-like aggregates in small-molecule based emitting layers by solvent mixture for improving the properties of OLEDs.

scholarly journals Aromatic imide/amide-based organic small-molecule emitters for organic light-emitting diodes

2020 ◽  
Vol 4 (6) ◽  
pp. 1554-1568 ◽  
Author(s):  
Yuanyuan Qin ◽  
Guoping Li ◽  
Ting Qi ◽  
Hui Huang
Keyword(s):  
Small Molecules ◽  
Small Molecule ◽  
Light Emitting Diodes ◽  
Molecular Design ◽  
Organic Light Emitting Diodes ◽  
Device Performance ◽  
Design Rules ◽  
Light Emitting ◽  
The Past ◽  
Organic Light

Aromatic imide/amide-based organic small molecules as emitters in organic light-emitting diodes have caught increasing attention. This study summarized their advances in terms of device performance and molecular design rules over the past 20 years.

Pyridine-Incorporated Dihexylquaterthiophene: A Novel Blue Emitter for Organic Light Emitting Diodes (OLEDs)

2012 ◽  
Vol 65 (9) ◽  
pp. 1244 ◽  
Author(s):  
Prashant Sonar ◽  
Sonsoles Garcia Santamaria ◽  
Ting Ting Lin ◽  
Alan Sellinger ◽  
Henk Bolink
Keyword(s):  
Light Emitting Diodes ◽  
Blue Emission ◽  
Organic Light Emitting Diodes ◽  
High Yield ◽  
Device Performance ◽  
Host Matrix ◽  
Maximum Brightness ◽  
Light Emitting ◽  
Organic Light ◽  
Processing Techniques

The synthesis and characterisation of 2,5-bis(5′-hexyl-[2,2′-bithiophen]-5-yl)pyridine (Th4PY) and its use as a blue emitter in organic light emitting diodes (OLEDs) is reported. Th4PY was synthesised in high yield using a straightforward Suzuki coupling route with commercially available starting materials. As Th4PY is both soluble and has low molecular weight, blue OLEDs were fabricated using both spin-coating and vacuum deposition thin film processing techniques to study the effect of processing on device performance. OLED devices using a spin-coated layer consisting of 4′,4′′-tris(N-carbazolyl)triphenylamine (TCTA) and 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD) as a host matrix together with Th4PY as emitter exhibited highly efficient sky-blue emission with a low turn-on voltage of 3 V, a maximum brightness close to 15000 cd m–2 at 8 V, and a maximum luminous efficiency of 7.4 cd A–1 (6.3 lm W–1) with CIE coordinates of x = 0.212, y = 0.320. The device performance characteristics are compared using various matrices and processing techniques. The promising sky-blue OLED performance, solution processability, and ambient stability make Th4PY a promising blue emitter for application in OLEDs.

Interface and thickness tuning for blade coated small-molecule organic light-emitting diodes with high power efficiency

2013 ◽  
Vol 114 (12) ◽  
pp. 123101 ◽  
Author(s):  
Yu-Fan Chang ◽  
Yu-Chian Chiu ◽  
Hao-Wen Chang ◽  
Yi-Siang Wang ◽  
Yi-Lun Shih ◽  
...  
Keyword(s):  
Small Molecule ◽  
High Power ◽  
Power Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
High Power Efficiency

Unmodified small-molecule organic light-emitting diodes by blade coating

2012 ◽  
Vol 13 (10) ◽  
pp. 2149-2155 ◽  
Author(s):  
Yu-Fan Chang ◽  
Yu-Chian Chiu ◽  
Han-Cheng Yeh ◽  
Hao-Wen Chang ◽  
Chun-Yu Chen ◽  
...  
Keyword(s):  
Small Molecule ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Blade Coating

High-Performance Solution Processed Red Hyperfluorescent OLEDs Based on Cibalackrot

2022 ◽  
Author(s):  
Nicholle R. Wallwork ◽  
Masashi Mamada ◽  
Atul Shukla ◽  
Sarah K. M. McGregor ◽  
Chihaya Adachi ◽  
...  
Keyword(s):  
High Performance ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Device Performance ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

Hyperfluorescent organic light-emitting diodes (OLEDs) has allowed remarkable device performances to be achieved using fluorescent emitters. Superior device performance has been realised using thermally evaporated emissive layers. However, for future...

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