کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1263726 | 1496837 | 2015 | 7 صفحه PDF | دانلود رایگان |
• Efficient color-stable and color-tunable white OLEDs realized by solution process.
• Two individual solution processed EMLs result in stable and tunable chromaticity.
• Chromaticity tenability of 1600–4600 K is demonstrated.
• Good characteristics for lighting with color rendering index up to 80.
• Device shows an EQE up to 13.6%.
Efficient solution-processed color-stable and color-tunable white organic light emitting diodes (OLEDs) have been realized by judicious selection of the host materials for the emission layers. The color-tunable OLED demonstrates the unique characteristic of modulating the electroluminescence by using the applied voltage of the device and displays color temperatures ranging from 1600 K to 4600 K around the daylight locus, with a peak external quantum efficiency of 13.6% and a peak current efficiency of 22.5 cd A−1. On the other hand, the chromaticity-stable device shows a negligible color change, from 300 to 2000 nits. The manipulation of chromaticity is attributed to the energy transfer dynamics of the hosts and dopants under different electric fields.
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Journal: Organic Electronics - Volume 20, May 2015, Pages 36–42