当前位置:
X-MOL 学术
›
Dyes Pigments
›
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.)
Carbazole-diphenylimidazole based bipolar material and its application in blue, green and red single layer OLEDs by solution processing
Dyes and Pigments ( IF 4.1 ) Pub Date : 2017-03-26 06:25:31
Panpan Wang, Shigen Fan, Junfei Liang, Lei Ying, Jing You, Shirong Wang, Xianggao Li
Dyes and Pigments ( IF 4.1 ) Pub Date : 2017-03-26 06:25:31
Panpan Wang, Shigen Fan, Junfei Liang, Lei Ying, Jing You, Shirong Wang, Xianggao Li
![]() |
Single layer structure is an ideal way to realize the low cost solution processed organic light-emitting diodes (OLEDs). Efficient electroluminescent material with hole and electron transport characters as well as suitable triplet energy levels is highly desired to realize single layer OLEDs with good performance. In this work, a bipolar compound with carbazole as electron donor and 4,5-diphenylimidazoleas as electron acceptor has been successfully synthesized and applied as emitting layer for both non-doped and doped single layer OLEDs fabricated by solution processing. A pure blue emission achieved in the non-doped single layer OLED with a current efficiency of 0.38 cd A−1, luminance up to 672 cd m−2. The single layer doped OLEDs with the bipolar compound as host achieved blue, green and red phosphorescence OLEDs with current efficiency of 0.083, 13.42, 2.58 cd A−1 and luminance up to 108, 17103, 1347 cd m−2, respectively. The performance of single layer OLEDs has been greatly improved by bipolar emitting materials which show a great potential to simplify the configuration of OLEDs.
中文翻译:
咔唑-二苯基咪唑基双极性材料及其在溶液加工中在蓝色,绿色和红色单层OLED中的应用
单层结构是实现低成本解决方案处理的有机发光二极管(OLED)的理想方法。为了实现具有良好性能的单层OLED,非常需要具有空穴和电子传输特性以及合适的三线态能级的高效电致发光材料。在这项工作中,已成功合成了以咔唑为电子给体和4,5-二苯基咪唑为电子受体的双极性化合物,并将其用作通过溶液加工制造的非掺杂和掺杂单层OLED的发光层。在非掺杂的单层OLED中获得纯蓝色发射,电流效率为0.38 cd A -1,亮度高达672 cd m -2。以双极性化合物为主体的单层掺杂的OLED实现了蓝色,绿色和红色磷光OLED,其电流效率分别为0.083、13.42、2.58 cd A -1和亮度分别高达108、17103、1347 cd m -2。通过显示出极大的潜力来简化OLED的构造的双极性发射材料,单层OLED的性能得到了极大的改善。
更新日期:2017-03-26
中文翻译:

咔唑-二苯基咪唑基双极性材料及其在溶液加工中在蓝色,绿色和红色单层OLED中的应用
单层结构是实现低成本解决方案处理的有机发光二极管(OLED)的理想方法。为了实现具有良好性能的单层OLED,非常需要具有空穴和电子传输特性以及合适的三线态能级的高效电致发光材料。在这项工作中,已成功合成了以咔唑为电子给体和4,5-二苯基咪唑为电子受体的双极性化合物,并将其用作通过溶液加工制造的非掺杂和掺杂单层OLED的发光层。在非掺杂的单层OLED中获得纯蓝色发射,电流效率为0.38 cd A -1,亮度高达672 cd m -2。以双极性化合物为主体的单层掺杂的OLED实现了蓝色,绿色和红色磷光OLED,其电流效率分别为0.083、13.42、2.58 cd A -1和亮度分别高达108、17103、1347 cd m -2。通过显示出极大的潜力来简化OLED的构造的双极性发射材料,单层OLED的性能得到了极大的改善。