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Use of Versatile Binaphthalene Derivative in Chromatic-Stability Non-Doped White Organic Light Emitting Diodes

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Abstract:

We have investigated the properties of the ultra-thin layer all-fluorescent nondoped white organic light emitting diodes based on blue-emitting binaphthalene derivative (BN) and ultra-thin green and red emitters. By optimizing the thickness of BN, we found that the device exhibited a high color rendering index (CRI) of 84 and high chromatic-stability with the Commission International de L’Eclairage coordinates shifting from (0.26, 0.32) to (0.27, 0.33) as the luminance increased from 40 to 10645 cd/m2. In addition, we also achieved a low current efficiency roll-off, which current efficiency only reduced from 3.77 cd/A to 3.36 cd/A when the current density increased from 13 mA/cm2 to 104 mA/cm2. High CRI and low efficiency roll-off are of significance for the applications of organic light-emitting diodes in display and lighting.

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Periodical:

Advanced Materials Research (Volumes 490-495)

Pages:

3887-3891

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.490-495.3887

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Online since:

March 2012

Authors:

Fei Fei Wang, Yan Fang Lv, Peng Chao Zhou, Hong Lin, Na Wei, Bin Wei

Keywords:

Chromatic-Stability, Efficiency Roll-Off, Ultra-Thin Layer, White Organic Light Emitting Diodes

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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