التفاصيل البيبلوغرافية
| العنوان: |
Color tunable and very-high color rendering white organic light-emitting diodes employing a heavy-metal-free single emitter. |
| المؤلفون: |
Pan, Saihu1 pansaihu@cczu.edu.cn, Liu, Kangping1, Ling, Zhitian1, Guo, Kunping1, Wang, Shuanglong1, Chen, Minyu1, Si, Changfeng1, Tang, Zhenyu1, Wei, Bin1 bwei@shu.edu.cn |
| المصدر: |
Surface & Coatings Technology. Apr2019, Vol. 363, p442-446. 5p. |
| مصطلحات موضوعية: |
*ORGANIC light emitting diodes, *HEAVY metals, *LIGHT sources, *MONOMERS, *EXCIMERS |
| مستخلص: |
Abstract The development of white organic light-emitting diodes (WOLEDs) holds great promise for the production of high-color-quality lighting sources. High quantum efficiencies for the conversion of electrical energy to light have been realized. The color stability and color-rendering index (CRI) become bottleneck for the commercial application of WOLEDs. Here, we employed a metal-free dimerization of 1‑phenyl‑3,5‑diamine‑triazine (DPDT) as a single non-doped emitter in WOLEDs, that exhibits mild efficiency roll-off while maintaining CRI of 92. This high CRI is attributable to the DPDT with efficient monomer and excimer emission, which together emit a relatively wide spectrum that nearly covers the entire range of visible light. The formation of the excimer can make the emission color of single-emitter based WOLEDs tunable with the applied bias over a wide range from blue to pure white. Highlights • The metal-free dimerization of 1-phenyl-3,5-diamine-triazine (DPDT) materials were synthesized. • The emission color can be tuned over a wide range from blue to pure white. • The resulting color tunable WOLEDs achieves mild efficiency roll-off while maintaining CRI of 92. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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