具有简单且统一的结构的高效全色，白色磷光和TADF OLED的理想通用主机,Journal of Materials Chemistry C

当前位置： X-MOL 学术 › J. Mater. Chem. C › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

具有简单且统一的结构的高效全色，白色磷光和TADF OLED的理想通用主机
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1039/c7tc04149g
Kuo Gao _{1,

2,

3,

4} , Kunkun Liu _{1,

2,

3,

4} , Xiang-Long Li _{1,

2,

3,

4} , Xinyi Cai _{1,

2,

3,

4} , Dongjun Chen _{1,

2,

3,

4} , Zhida Xu _{1,

2,

3,

4} , Zuozheng He _{1,

2,

3,

4} , Binbin Li _{1,

2,

3,

4} , Zhenyang Qiao _{1,

2,

3,

4} , Dongcheng Chen _{1,

2,

3,

4} , Yong Cao _{1,

2,

3,

4} , Shi-Jian Su _{1,

2,

3,

4}

Affiliation

在简单且统一的设备架构中，使用适合于红色，绿色和蓝色掺杂剂的主体材料实现高效的全色和白色有机发光二极管（OLED）一直是一个挑战。此处，一系列噻吨和9-苯基咔唑杂种的设计并合成，其中9,9' - （（9 ħ -thioxanthene -9,9-二基）双（3,1-亚苯基））二（9 ħ -咔唑（m-DCz-S）表现出独特的通用宿主特征。使用磷光和热激活的延迟荧光（TADF）发射器（即FIr6，Ir（ppy）₃）制造全色OLED。，PO-01、2CzPN，ACRDSO2和PyCN-ACR；其中，基于FIr6的蓝色设备显示了迄今为止报告的最佳性能。此外，磷光白色OLED具有互补发射极，FIr6：PO-01，具有61.4 CD A的高效率^-1，62.9流明w ^ ^-1，和25.0％，并用颜色变化小于极其良好的颜色稳定性（0.0007， 0.0007）在整个亮度范围内。74.3光盘的进一步提高效率^-1，82.7流明w ^ ^-1在基于FIrpic：PO-01的磷光白色OLED的情况下，已达到26.4％，这是迄今为止报道的具有这种简化结构的最高效的白色OLED。值得注意的是，仅通过改变掺杂到主机中的发射极，就可以采用相同的极其简单的架构来制造所有器件。因此，独特的通用主体材料m-DCz-S对于将来的低成本和高效OLED应用是有利的。

"点击查看英文标题和摘要"

An ideal universal host for highly efficient full-color, white phosphorescent and TADF OLEDs with a simple and unified structure

The actualization of highly efficient full-color and white organic light-emitting diodes (OLEDs) in a simple and unified device architecture using host materials that are suitable for red, green, and blue dopants has been quite a challenge. Herein, a series of thioxanthene and 9-phenylcarbazole hybrids were designed and synthesized, among which 9,9′-((9H-thioxanthene-9,9-diyl)bis(3,1-phenylene))bis(9H-carbazole) (m-DCz-S) exhibited unique universal host characteristics. Full-color OLEDs were fabricated with phosphorescent and thermally activated delayed fluorescent (TADF) emitters, i.e. FIr6, Ir(ppy)₃, PO-01, 2CzPN, ACRDSO2, and PyCN-ACR; among these, the FIr6-based blue device showed the best performance reported to date. In addition, the phosphorescent white OLED with complementary emitters, FIr6: PO-01, has high efficiencies of 61.4 cd A⁻¹, 62.9 lm W⁻¹, and 25.0% and extremely good color stability with a color variation less than (0.0007, 0.0007) in the whole range of luminance. Further improved efficiencies of 74.3 cd A⁻¹, 82.7 lm W⁻¹, and 26.4% have been achieved in the case of the phosphorescent white OLED based on FIrpic: PO-01, which is the most efficient white OLED with this simplified structure reported to date. It is worth noting that all the devices have been fabricated with the same extremely simple architecture by solely changing the emitters doped into the host; thus, the unique universal host material m-DCz-S is advantageous for future low-cost and highly efficient OLED application.

更新日期：2017-10-03

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南