Nishal, Vandna and Kumar, Amit and Kadyan, Partap S. and Singh, Devender and Srivastava, Ritu and Singh, Ishwar and Kamalasanan, Modeeparampil N. (2013) Synthesis, Characterization, and Electroluminescent Characteristics of Mixed-Ligand Zinc(II) Complexes. Journal of Electronic Materials , 42. pp. 973-978. ISSN 0361-5235

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Abstract

Mixed-ligand zinc complexes, i.e., 2-(2-hydroxyphenyl)benzothiazolato-5,7- dichloro-8-hydroxyquinolinato zinc(II) [ZnBTZ(Cl(2)q)], 2-(2-hydroxyphenyl) benzothiazolato-5,7-dimethyl-8-hydroxyquinolinato zinc(II) [ZnBTZ(Me(2)q)], and 2-(2-hydroxyphenyl)benzothiazolato-2-carbonitril-8-hydroxyquinolinato zinc(II) [ZnBTZ(CNq)], were synthesized and characterized. The metal complexes have high thermal stability (> 300A degrees C) and high glass-transition temperature (> 150A degrees C) and are suitable for optoelectronic applications. Optical properties of the synthesized complexes were characterized by using ultraviolet-visible (UV-Vis) and photoluminescence spectroscopy. Color tuning by changing the ligand was observed in synthesized complexes. Multilayered organic electroluminescent devices were fabricated having structure indium-tin oxide (ITO)/N,N'-diphenyl-N,N'-bis(1-naphthyl)-1,1'-biphenyl-4,4'-diamine (alpha-NPD)/zinc complex/2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP)/tris(quinolinolate)Al-III (Alq(3))/LiF/Al using the synthesized complexes as emissive material. The electroluminescence spectra show peak emission centered at 532 nm, 572 nm, and 541 nm, respectively, for these materials. The emitted light has chromaticity with Commission Internationale d'A parts per thousand clairage coordinates x = 0.35 and y = 0.56 for ZnBTZ(Cl(2)q), x = 0.49 and y = 0.47 for ZnBTZ(Me(2)q), and x = 0.48 and y = 0.40 for ZnBTZ(CNq) complex.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Institute of Electrical and Electronics Engineers.
Subjects:	Engineering > Electronics and Electrical Engineering Materials Science Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	03 Jun 2020 10:39
Last Modified:	03 Jun 2020 10:39
URI:	http://npl.csircentral.net/id/eprint/3009

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