Tunable hole injection of solution-processed polymeric carbon nitride towards efficient organic light-emitting diode
Tunable hole injection of solution-processed polymeric carbon nitride towards efficient organic light-emitting diode
复制标题
溶液加工聚合氮化碳的可调谐空穴注入高效有机发光二极管
DOI：
10.1063/1.5016411
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发表时间：
2018
影响因子：
4
通讯作者：
Wei Bin
中科院分区：
文献类型：
--
作者：
Zhang Xiaowen;Zheng Qinghong;Tang Zhenyu;Li Wanshu;Zhang Yan;Xu Kai;Xue Xiaogang;Xu Jiwen;Wang Hua;Wei Bin
聚合物氮化碳(CNxHy)是由双氰胺合成的有机电致发光二极管(OLED)中的空穴注入层。X射线衍射仪、原子力显微镜、X射线光电子能谱、紫外光电子能谱和交流阻抗谱的测试表明，CNxHy具有优异的薄膜形貌和额外的电学性质，如裁剪功函数和可调的空穴注入。与采用溶液法制备聚(乙烯二氧基噻吩基)：聚苯磺酸盐空穴注入层的OLED相比，CNxHy基OLED的发光效率提高了76.6%。我们的结果也为利用溶液工艺扩大氮化碳在有机电子中的应用铺平了道路。
Polymeric carbon nitride (CNxHy) has been facilely synthesized from dicyandiamide and functions as a solution-processed hole injection layer in organic light-emitting diodes (OLEDs). The measurements using X-ray diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and impedance spectroscopy elucidate that CNxHy exhibits superior film morphology and extra electric properties such as tailored work function and tunable hole injection. The luminous efficiency of CNxHy-based OLED is found to improve by 76.6% in comparison to the counterpart using favorite solution-processed poly(ethylene dioxythiophene):poly(styrene sulfonate) as the hole injection layer. Our results also pave a way for broadening carbon nitride applications in organic electronics using the solution process.