11 April 2014 High efficiency white organic light emitting diodes employing blue and red platinum emitters
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Abstract
Platinum-based blue and red emitters were used to make stacked organic light-emitting diodes devices for potential use in solid-state lighting. The electroluminescence (EL) spectra were strongly dependent on the red layer thickness and relative position of the red and blue emissive layers. Although all devices had very little EL in the green region, a color rendering index (CRI) as high as 65 was achieved. Addition of a suitable phosphorescent green emissive layer should produce higher CRI values. All devices tested exhibited external quantum efficiencies greater than 20%, indicating that the Pt-based emitters reported here are potentially useful for solid-state lighting applications.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Barry P. O’Brien, Gregory Norby, Guijie Li, Jian Li, "High efficiency white organic light emitting diodes employing blue and red platinum emitters," Journal of Photonics for Energy 4(1), 043597 (11 April 2014). https://doi.org/10.1117/1.JPE.4.043597 . Submission:
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