Improved red dopants for organic electroluminescent devices

C. H. Chen; C. W. Tang; J.L. Shi; Kevin P. Klubek

doi:10.1002/masy.19981250103

Abstract

Abstract A t ‐butyl substituted red fluorescent dye, 4‐(dicyanomethylene)‐2‐ t‐butyl ‐6‐(1,1,7,7‐tetramethyljulolidyl‐9‐enyl)‐4 H ‐pyran (DCJTB), has been found to be an excellent dopant in AIQ 3 which produces a highly efficient organic EL device with improved red chromaticity. Unlike 4‐(dicyanomethylene)‐2‐ methyl ‐6‐(1,1,7,7‐tetramethyljulolidyl‐9‐enyl)‐4 H ‐pyran (DCJT), DCJTB can be synthesized in a pure form directly from the unsymmetrical 4‐(dicyanomethylene)‐2‐( t ‐butyl)‐6‐methyl‐4 H ‐pyran without the contamination of the non‐fluorescent bis ‐condensation byproduct which is prevalent in the DCJT preparation. Both photoluminescence and electroluminescence in the solid films of DCJTB in AlQ 3 are modestly enhanced by the extra t‐butyl substitution as a result of a reduction in the effect of concentration quenching. The operation stability of the DCJTB doped EL device is superior, having a half‐life of over 5,000 h driven at an initial brightness > 400 cd/m 2 .

Keywords

ElectroluminescenceDopantFluorescenceMaterials scienceQuenching (fluorescence)PhotochemistryDopingPhotoluminescenceChromaticityPyranOLEDLuminescenceOptoelectronicsChemistryOrganic chemistryNanotechnologyOptics

Affiliated Institutions

Kodak (United States) US

Related Publications

Electroluminescence of doped organic thin films

Chak Wah Tang , S. A. VanSlyke , C. H. Chen

Electroluminescent (EL) devices are constructed using multilayer organic thin films. The basic structure consists of a hole-transport layer and a luminescent layer. The hole-tra...

1989 Journal of Applied Physics 2953 citations

Novel Europium Complex for Electroluminescent Devices with Sharp Red Emission

Takeshi Sano , Masayuki Fujita , Takanori Fujii +3 more

A volatile Eu complex, Eu(TTA) 3 (phen) (TTA=thenoyltrifluoroacetone, phen=1,10-phenanthroline), was synthesized and applied to an electroluminescent (EL) cell structure of [ITO...

1995 Japanese Journal of Applied Physics 140 citations

Ben Zhong Tang , Xiaowei Zhan , Gui Yu +3 more

2,3,4,5-Tetraphenylsiloles with different 1,1-substituents on the ring silicon atoms, i.e., 1,1-dimethyl-2,3,4,5-tetraphenylsilole (1), 1-methyl-1-(3-chloropropyl)-2,3,4,5-tetra...

2001 Journal of Materials Chemistry 633 citations

Synthesis and Characterization of Organic−Inorganic Perovskite Thin Films Prepared Using a Versatile Two-Step Dipping Technique

Kangning Liang , David B. Mitzi , Michael T. Prikas

A convenient two-step technique for preparing thin films of the organic−inorganic perovskites (RNH3)2(CH3NH3)n-1MnI3n+1 (R = butyl, phenethyl; M = Pb, Sn; n = 1, 2, ∞) has been ...

1998 Chemistry of Materials 594 citations

Organic-Inorganic Hybrid Materials as Semiconducting Channels in Thin-Film Field-Effect Transistors

Cherie R. Kagan , David B. Mitzi , Christos Dimitrakopoulos

Organic-inorganic hybrid materials promise both the superior carrier mobility of inorganic semiconductors and the processability of organic materials. A thin-film field-effect t...

1999 Science 2049 citations

Publication Info

Year: 1998
Type: article
Volume: 125
Issue: 1
Pages: 49-58
Citations: 135
Access: Closed

External Links

View on DOI.org

Social Impact

Altmetric

Improved red dopants for organic electroluminescent devices

PlumX Metrics

Social media, news, blog, policy document mentions

Citation Metrics

135

OpenAlex

Cite This

APA Style

                            
                                
                                    C. H. Chen, 
                                
                                    C. W. Tang, 
                                
                                    J.L. Shi
                                
                                et al.
                            
                            (1998). 
                            Improved red dopants for organic electroluminescent devices. 
                            Macromolecular Symposia
                            , 125
                            (1)
                            , 49-58.
                            https://doi.org/10.1002/masy.19981250103
                        

Identifiers

DOI: 10.1002/masy.19981250103