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Impedance spectroscopic studies of organic light emitting diodes with dimethyl sulphoxide doped hole injecting and lithium fluoride electron injecting layers

T. A. HAMEED SHAHUL1,2, M. R. BAIJU3, J. ANEESH1, P. PREDEEP1,*

Affiliation

  1. Laboratory for Unconventional Electronics and Photonics, Department of Physics, National Institute of Technolgoy, Calicut, Kerala, India 673603
  2. Permanent Address: Dept. of Electronics and Communication Engineering, TKM College of Engineering, Kollam, Kerala, India
  3. Permanent Address: Dept of Electronics and Communication Engineering, College of Engineering, Thiruvananthapuram, Kerala, India

Abstract

Organic light emitting diodes(OLEDs) have become one of the potential candidates in display technology. Additional hole injecting and electron injecting layers are shown to be greatly improving the performance and life of OLEDs. In this study, the effects of the thickness of LiF buffer layer with aluminium cathode on the electrical behavior of OLEDs are discussed. Further an effort has been made to investigate the doping effect of Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate)(PEDOT:PSS) with Dimethyl Sulphoxide (DMSO). It has been found that both the modifications in a device greatly contribute to the electrical characteristics..

Keywords

OLED, PEDOT:PSS, DMSO, Alq3, Metal buffer layer, SPICE.

Citation

T. A. HAMEED SHAHUL, M. R. BAIJU, J. ANEESH, P. PREDEEP, Impedance spectroscopic studies of organic light emitting diodes with dimethyl sulphoxide doped hole injecting and lithium fluoride electron injecting layers, Optoelectronics and Advanced Materials - Rapid Communications, 6, 1-2, January-February 2012, pp.91-94 (2012).

Submitted at: Nov. 29, 2011

Accepted at: Feb. 20, 2012