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Proceedings Paper

Multi emissive layer type white organic light emitting diode based on zinc metal complexes
Author(s): Amit Kumar; Ritu Srivastava; Arunandan Kumar; Modeeparampil N. Kamalasanan; Ishwar Singh
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Paper Abstract

White organic light emitting diodes were fabricated using two zinc complexes bis(2-(2-hydroxyphenyl)benzoxazolato) zinc(II) [Zn(HPB)2] and bis(5,7-dimethyl-8-hydoxyquinolinato) zinc(II) [Zn(Me2q)2]. Zn(HPB)2 emitted light in blue region while Zn(Me2q)2 emitted light in orange region of the visible spectrum. Hence, we achieved white light by combining the two complimentary colors of the materials and by optimizing their thickness as emissive layer. Commission Internationale de l'Eclairage coordinates of the device, with 35 nm thickness of Zn(HPB)2 and 13 nm thickness of Zn(Me2q)2, were (0.28, 0.36) which were well within the white region. The device emitting white light showed maximum luminescence of 2582 cd/m2 at 19 V.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 854930 (15 October 2012); doi: 10.1117/12.924261
Show Author Affiliations
Amit Kumar, CSIR-National Physical Lab. (India)
Maharshi Dayanand Univ. (India)
Ritu Srivastava, CSIR-National Physical Lab. (India)
Arunandan Kumar, CSIR-National Physical Lab. (India)
Modeeparampil N. Kamalasanan, CSIR-National Physical Lab. (India)
Ishwar Singh, Maharshi Dayanand Univ. (India)

Published in SPIE Proceedings Vol. 8549:
16th International Workshop on Physics of Semiconductor Devices
Monica Katiyar; B. Mazhari; Y N Mohapatra, Editor(s)

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