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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Low driving voltage and enhanced performance of solution-processed blue flexible organic light-emitting diode with PTAA/AgNWs/PTAA composite hole injection layers
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Low driving voltage and enhanced performance of solution-processed blue flexible organic light-emitting diode with PTAA/AgNWs/PTAA composite hole injection layers

机译：具有PTAA / AgNWS / PTAA复合孔注入层的溶液加工蓝色柔性有机发光二极管的低驱动电压和增强性能

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摘要

The composite hole injection layers (c-HILs) PTAA/AgNWs/PTAA were introduced into solution-processed blue flexible organic light-emitting diode (FOLED) to improve the hole injection ability, further to lower the driving voltage and enhance the device's performance. By optimizing the c-HILs, the optimal FOLED has been achieved with a maximum luminance of 6051 cd m(-2) at 9 V and a maximum current efficiency of 1.76 cd A(-1), which are increased by 45% and 75% compared to that of the control device without c-HILs. Meanwhile, the optimal device presents the low turn-on voltage of 2.7 V at 1 cd m(-2) and driving voltage of 6.0 V at 1000 cd m(-2), which are decreased by 0.4 V and 1.9 V compared to that of the control device. The electroluminescent performance enhancement of FOLED is attributed to that the introduction of c-HILs can decrease the hole injection barrier and improve the hole injection ability, which will result in the balanced carrier recombination in emitting layer. Moreover, we analysed the electrical and morphological characteristics of c-HILs, and investigated the mechanism by energy level analysis and impedance spectroscopy.
机译：复合的空穴注入层（C-的HIL）PTAA / AgNWs / PTAA引入溶液加工的蓝色柔性有机发光二极管（FOLED）来提高空穴注入能力，还降低驱动电压和提高设备的性能。通过优化的c的HIL，最优FOLED已经用的6051 CD米（-2）的最大亮度在9 V和1.76 CD A（-1）的最大电流效率来实现，这是增加了45％和75 ％相比，没有C-的HIL的控制装置的。同时，最佳装置呈现所述低导通2.7 V的电压在1 CD米（-2），6.0伏的驱动电压在1000cd米（-2），其由0.4 V和1.9V的降低相比的控制装置的。 FOLED的电致发光性能的提高归因于，引入C-的HIL的能够降低空穴注入势垒和提高空穴注入能力，这将导致在发光层中的平衡载流子复合。此外，我们分析了C-的HIL的电气和形态学特征，并研究通过能级分析和阻抗谱的机制。

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