Nishal, Vandna and Singh, Devender and Saini, Raman Kumar and Bhagwan, Shri and Tanwar, Vijeta and -, Sonika and Srivastava, Ritu and Kadyan, Pratap Singh (2015) Optoelectronic characterization of zinc complexes for display device applications. Journal of Materials Science: Materials in Electronics, 26 (9). 6762 -6768. ISSN 0957-4522

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Abstract

2-(2-Pyridyl)benzimidazolato)-2-methyl-8-hydroxyquinolinatozinc(II)[ZnPBI(Meq)], 2-(2-pyridyl)benzimidazolato)-5-chloro-8-hydroxyquinolinatozinc(II) [ZnPBI(Clq)] and 2-(2-pyridyl)benzimidazolato)-8-hydroxyquinolinatozinc(II) [ZnPBI(q)] were synthesized and characterized for the purpose to be used as electroluminescent materials. All complexes emitted bright colored light on excitation by ultra-violet light source which showed their suitability for the operation in opto-electronic devices. Using a selected complex [ZnPBI(Meq)] as emissive layer, multilayered organic electroluminescent device was fabricated having structure ITO/alpha-NPD/Zinc complex/BCP/Alq(3)/LiF/Al, that produced bright bluish green emission at 532 nm. Maximum luminescence observed was 4038 cd/m(2) at 18 V while the turn on voltage of the device was 7 V. The Commission Internationale d'Eclairage chromaticity of the device had color coordinates at x = 0.35, y = 0.44 and was found to be independent of the operating voltages. The [ZnPBI(Meq)] complex exhibited high thermal stability (> 300 A degrees C) and high glass transition temperature (> 150 A degrees C).

Item Type:	Article
Subjects:	Engineering > Electronics and Electrical Engineering Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	06 Oct 2016 05:59
Last Modified:	06 Oct 2016 05:59
URI:	http://npl.csircentral.net/id/eprint/1934

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