Mechanochromic luminescence and color-tunable light-emitting devices of triphenylamine functionalized benzo[d,e]benzo[4,5]imidazo[2,1-a]isoquinolin-7-one

2019 ◽  
Vol 7 (32) ◽  
pp. 9808-9812 ◽  
Author(s):  
Bin Huang ◽  
Dawei Jiang ◽  
Yan Feng ◽  
Wen-Cheng Chen ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Color Tunable ◽  
Donor Acceptor ◽  
Mechanochromic Luminescence

A novel donor–acceptor emitter exhibiting mechanochromic luminescence was used in light-emitting devices with tunable colors triggered by heat treatment.

A Donor–Acceptor-type Host Material for Solution-processed Phosphorescent Organic Light-emitting Devices Showing High Efficiency

2014 ◽  
Vol 43 (12) ◽  
pp. 1935-1936 ◽  
Author(s):  
Chang-Hwa Jun ◽  
Yong-Jin Pu ◽  
Masahiro Igarashi ◽  
Takayuki Chiba ◽  
Hisahiro Sasabe ◽  
...  
Keyword(s):  
High Efficiency ◽  
Host Material ◽  
Solution Processed ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Type Host ◽  
Organic Light ◽  
Donor Acceptor ◽  
Organic Light Emitting Devices

Degradation effects in polymer light emitting devices due to heat treatment

2004 ◽  
Vol 212 (1) ◽  
pp. 225-230
Author(s):  
Frank Janssen ◽  
Marco Sturm ◽  
Leo van Ijzendoorn ◽  
Arnoud Denier van der Gon ◽  
Herman Schoo ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Polymer Light Emitting Devices

Emitting color tunable carbon dots by adjusting solvent towards light-emitting devices

2018 ◽  
Vol 29 (8) ◽  
pp. 085705 ◽  
Author(s):  
Jinyang Zhu ◽  
Xue Bai ◽  
Jialin Bai ◽  
Gencai Pan ◽  
Yongsheng Zhu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Color Tunable

A Single-Phase Full-Color Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ Micron Belt Mat for White-Light Emitting Diode Application

2016 ◽  
Vol 697 ◽  
pp. 727-732 ◽  
Author(s):  
Bo Cui ◽  
Qing Hong Zhang ◽  
Hong Zhi Wang ◽  
Yao Gang Li
Keyword(s):  
Heat Treatment ◽  
White Light ◽  
Single Phase ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Electrospinning Process ◽  
Light Emitting ◽  
Full Color ◽  
Color Tunable ◽  
White Light Emitting Diodes

A new kind of Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ oxyfluoride phosphor micron belt mat was obatained by simply electrospinning process and subsequent heat treatment. XRD result shows that a pure Ca4Si2O7F2 phase can be obtained at low temperature of around 900 °C. The micron belt precursor has a smooth surface and uniform morphology, and the width and thickness of the belt is about 2 μm and 200 nm. The morphology of micron belt is well retained after heat treatment, forming a plat phosphor mat consisting of uniform micron belt network. Ca4Si2O7F2:Ce3+, Ca4Si2O7F2:Tb3+, and Ca4Si2O7F2:Sm3+ exhibit the characteristic emissions of Ce3+ (4f7→4f65d1, blue), Tb3+ (4f8→4f75d, green), and Sm3+ (4f6→4f65d, red) under the excitation of near-UV light, respectively. By adjusting the doping concentration of Ce3+, Tb3+, Sm3+ ions a white emission in a single phase was obtained under the excitation of 360 nm. We have demonstrated that Ca4Si2O7F2:Ce3+, Tb3+, Sm3+ phosphor mat can be a promising candidate for a color-tunable phosphor mat applied in a near-UV White light emitting diodes.

Electrophosphorescent Light Emitting Devices Using New Iridium(III) Complexes

2001 ◽  
Vol 708 ◽  
Author(s):  
Rupasree Ragini Das ◽  
Chang-Lyoul Lee ◽  
Jang-Joo Kim
Keyword(s):  
Room Temperature ◽  
Emission Spectra ◽  
Bidentate Ligands ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Host Materials ◽  
Donor Acceptor ◽  
Phosphorescence At Room Temperature ◽  
Triplet Emitter

ABSTRACTWe have synthesized a new tris-orthometalated Ir(mpp)3 and several bis-orthometalated Ir(III) complexes of 3-methyl-2-phenylpyridine(Hmpp). The influence of the methyl substituent in Hmpp and different ligand environments on the optical, electrochemical and electroluminescence properties of the orthometalated complexes are examined by varying the donor acceptor properties. This includes several uninegative bidentate ligands consisting of different organic functional groups. Absorption, excitation and emission spectra in solution and solid state of these complexes agree with a strong electronic excitation to 1MLCT in Ir(mpp)3 and preferably to 3MLCT in other complexes. These complexes demonstrate strong phosphorescence at room temperature with a lifetime of 1-2 μs. Multilayer organic light emitting devices using these complexes as the triplet emitter are studied using PVK (poly(9-vinyl carbazole)), CBP (4,4'-N,N'-dicarbazole-biphenyl) and TAZ (3-phenyl-4-(1'-napthyl)-5-phenyl-1,2,4-triazole) as the host materials. Ir(mpp)3exhibits quite different behavior in different host materials.

Color‐tunable organic light‐emitting devices

1996 ◽  
Vol 69 (20) ◽  
pp. 2959-2961 ◽  
Author(s):  
P. E. Burrows ◽  
S. R. Forrest ◽  
S. P. Sibley ◽  
M. E. Thompson
Keyword(s):  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Color Tunable ◽  
Organic Light Emitting Devices
Sign in / Sign up

Export Citation Format

Share Document