Kumar, Pankaj and Misra, Aparna and Bhardwaj , Ramil and Kamalasanan, M. N. and Jain, S. C. and Chand, Suresh and Tandon, R. P. (2008) Synthesis and characterization of some 5-coordinated aluminum-8-hydroxyquinoline derivatives for OLED applications. Displays , 29 (4). pp. 351-357. ISSN 0141-9382

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Abstract

Some new 8-hydroxyquinoline derivatives, 1,4-di(bis(8-hydroxyquinoline)aluminum-oxy)benzene, abbreviated as Alq(l), and 1,2-di (bis(8- hydroxyquinoline)aluminum-oxy) benzene, abbreviated as Alq(2), have been synthesized for organic light emitting diodes (OLEDs) applications. Complexes are thermally evaporable as well as highly soluble in common organic solvents. Bright green photoluminescence (PL) peak appeared in the range of 520-525 nm in solid and solution forms. OLEDs were successfully prepared via both the ways by physical vapor deposition and by spin coating of the complexes. The performance of devices prepared by physical vapor deposition, was compared with that of well-studied Alq(3). The device based on Alq(l), showed the brightness of 1400 cd/m(2) at 8 V, while only 602 cd/m(2) was observed for the device based on Alq(3) at the same applied voltage, when the devices were prepared in the identical conditions. Alq(1) device showed the maximum luminous efficiency of 0.94 cd/A at 0.1 A/cm(2), while 0.75 cd/A at 0.1 A/cm(2), was observed for Alq(3) based device. A comparative characteristics study of the new complexes with that of Alq(3) revealed that the new complexes are somewhat better than Alq(3).

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Computer Science Engineering Instruments/ Instrumentation Optics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	19 Apr 2017 11:52
Last Modified:	19 Apr 2017 11:52
URI:	http://npl.csircentral.net/id/eprint/2129

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