Tuning the emission color of a single-layer polymer light-emitting diode with a solution-processed external layer

2016 ◽  
Vol 222 ◽  
pp. 205-210 ◽  
Author(s):  
Diego de Azevedo ◽  
Jilian Nei Freitas ◽  
Raquel Aparecida Domingues ◽  
Marcelo Meira Faleiros ◽  
Thebano Emílio de Almeida Santos ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Single Layer ◽  
External Layer ◽  
Solution Processed ◽  
Light Emitting ◽  
Emission Color ◽  
Polymer Light Emitting Diode

P-167: Characteristics of Polymer Light Emitting Diode with Solution Processed Graphene Oxide Layer

2011 ◽  
Vol 42 (1) ◽  
pp. 1729-1732
Author(s):  
Jun Ho Youn ◽  
Yeon Il Lee ◽  
Hie Tae Moon ◽  
Su Jin Baek ◽  
Jin Jang
Keyword(s):  
Graphene Oxide ◽  
Oxide Layer ◽  
Light Emitting Diode ◽  
Solution Processed ◽  
Light Emitting ◽  
Polymer Light Emitting Diode

scholarly journals Ternary complex [Sm(acac)3(5-Br-2,2′-bpy)] for the solution-processed white polymer light-emitting diode (WPLED)

2020 ◽  
Author(s):  
Jiaxiang Liu
Keyword(s):  
Solid State ◽  
White Light ◽  
Ternary Complex ◽  
Light Emitting Diode ◽  
Primary Component ◽  
Solution Processed ◽  
Light Emitting ◽  
Full Color ◽  
Polymer Light Emitting Diode ◽  
The Ideal

In consideration of the Sm3þ-centered characteristic orange-light as the ideal color-primary component toward a dichromatic white-light, herein, through the doping of the complex [Sm(acac)3(5-Br-2,20-bpy)] (2; Hacac ¼ acetylacetone; 5-Br-2,2′-bpy ¼ 5-Br-2,20-bipyridine) into the PVK (PVK ¼ poly(N-vinyl-carbazole)) host, the obtained PVK@2 film (10:1, wt/wt) exhibits the straightforward solid-state white-light (ΦPL ¼ 6.7%). Further using the PVK@2 film (10:1; wt/wt) as the emitting layer, its singlecomponent solution-processed WPLED gives the electroluminescent performance (LMax of 360.9 cd/m2, ηMax c of 1.08 cd/A) satisfactory enough for portable full-color flat displays

scholarly journals Single-component white polymer light-emitting diode (WPLED) based on a binary tris-pyrazolonate-Sm-complex

2020 ◽  
Author(s):  
Jiaxiang Liu
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Single Component ◽  
Color Tuning ◽  
Solution Processed ◽  
Light Emitting ◽  
Component Solution ◽  
Full Color ◽  
Polymer Light Emitting Diode

Based on the doping of the binary tris-pyrazolate-Sm3þ complex [Sm(tba-PMP)3(5-Br-2,20-bpy)] (1; 5-Br-2,2′bpy ¼ 5-bromo2,20-bipyridine and Htba-PMP ¼ 1-phenyl-3-methyl-4-(tert-butylacetyl)-5-pyrazolone)) with an efficient orange-light into the PVK (poly(N-vinylcarbazole) host, the obtained PVK@1 films exhibit the dichromatic color-tuning (white-light to purplish-pink and to pink) characters strictly relative to the Sm3þdoping content and the λex wavelength. Further using the PVK@1 film (10:1; wt/wt) with the straightforward white-light (ΦPL ¼ 5.8%) as the emitting layer, its single-component solution-processed WPLED gives the electroluminescent performance (LMax of 157 cd/m2, ηMax c of 0.65 cd/A and the white-light-emitting stability) satisfactory enough for portable full-color flat displays.

scholarly journals All-solution processed polymer light-emitting diode displays

2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Hua Zheng ◽  
Yina Zheng ◽  
Nanliu Liu ◽  
Na Ai ◽  
Qing Wang ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Solution Processed ◽  
Light Emitting ◽  
Polymer Light Emitting Diode

Microcavity effect in a single-layer polymer light-emitting diode

1995 ◽  
Vol 7 (6) ◽  
pp. 541-544 ◽  
Author(s):  
Hermann F. Wittmann ◽  
Johannes Grüner ◽  
Richard H. Friend ◽  
George W. C. Spencer ◽  
Steve C. Moratti ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Single Layer ◽  
Light Emitting ◽  
Polymer Light Emitting Diode

scholarly journals Perylene Based Solution Processed Single Layer WOLED with Adjustable CCT and CRI

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 725
Author(s):  
Volkan Bozkus ◽  
Erkan Aksoy ◽  
Canan Varlikli
Keyword(s):  
Light Emitting Diode ◽  
Single Layer ◽  
Visible Range ◽  
Host Matrix ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Exciplex Emission ◽  
Color Rendering

In solution processed single layer white organic light emitting diode (WOLED) applications, the choice of host matrix and optimization of dopant levels represent two crucial parameters to consider. In this work, poly(N-vinylcarbazole) (PVK): 2-(4-Biphenylyl)-5-phenyl-1,3,4-oxadiazole (PBD) and PVK:1,3-bis[(4-tert-butylphenyl)-1,3,4-oxadiazolyl] phenylene (OXD-7) matrices are used as hosts for perylene based devices. PVK:PBD presented better compatibility and lower turn-on voltages compared to PVK:OXD-7. Benefiting from the exciplex emission observed at 630 nm, a color rendering index (CRI) value of 90 is reached with the device containing PVK:PBD as the host and 0.1 wt.% of an orange emitting perylene derivative, i.e., PDI. Introduction of the perylene based green emitter, i.e., PTE, in this emitting layer not only caused a fading in the exciplex emission, but also resulted in disappearance of the electroplex peak at 535 nm, which is detected between PVK:PBD and PTE in bare PTE containing devices. Full visible range coverage is achieved by optimizing the PDI:PTE ratio. WOLED containing PVK:PBD:0.06 wt.% PDI:0.03 wt.% PTE presented high CRI (≥95) and adjustable correlated color temperatures (CCT, 3800 K-5100 K).

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