Mixed Ligand Orange Emitter Zinc Complex for Organic Light Emitting Diodes

  • Amit Kumar
  • Akshaya Kumar Palai
  • Kanchan Saxena
  • Vinod K. Jain
  • Ritu Srivastava
  • Modeeparampil N. Kamalasanan
  • Ishwar Singh
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

We report synthesis, characterization and use of ternary zinc complex as emissive and electron transport material in organic light emitting devices (OLED). 5,7-dimethyl-8-hydroxyquinoline have been used with 2-(2-hydroxyphenyl) benzoxazole to synthesize (2-(2-hydroxyphenyl)benzoxazolato) (5,7-dimethyl-8-hydroxyquinolinato)zinc(II) [Zn(HPB)(Me2q)]. The complex possessed high thermal stability and having good film forming property. Optical properties of the synthesized complex have been studied by UV–visible absorption, photo-luminescence and transient photo-luminescence spectroscopy. Synthesized material shows quite good efficiency in multilayered device structure ITO/α-NPD/Zn(HPB)(Me2q)/BCP/Alq3/LiF/Al with maximum brightness of 4017 cd/m2 having electroluminescence spectral peak emission centered at 567 nm. Electron mobility of the synthesized complex was found to be 1.5 × 10−6 − 1.2 × 10−5 cm2/V s. for electric field range 1,000–1,200 (V/cm)1/2 and hence can be used as electron transport material in OLEDs.

Keywords

Zinc complex Transient electroluminescence Electron transport material 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Amit Kumar
    • 1
    • 2
  • Akshaya Kumar Palai
    • 3
  • Kanchan Saxena
    • 1
  • Vinod K. Jain
    • 1
  • Ritu Srivastava
    • 2
  • Modeeparampil N. Kamalasanan
    • 1
  • Ishwar Singh
    • 4
  1. 1.Amity Institute of Advanced Research and Studies (Materials and Devices)Amity UniversityNoidaIndia
  2. 2.Center for Organic Electronics, OLED Lab, Physics of Energy Harvesting DivisionNational Physical LaboratoryNew DelhiIndia
  3. 3.Department of Chemical SciencesTata Institute of Fundamental ResearchMumbaiIndia
  4. 4.Department of ChemistryM.D.UniversityRohtakIndia

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