Use of Trapezoid Pulse Voltage in Study of Transient Response of Organic Light-Emitting Diodes
Use of Trapezoid Pulse Voltage in Study of Transient Response of Organic Light-Emitting Diodes
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DOI：
10.1143/jjap.44.604
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发表时间：
2005-01
影响因子：
1.5
通讯作者：
B. Wei;K. Furukawa;M. Ichikawa;T. Koyama;Y. Taniguchi
中科院分区：
文献类型：
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作者：
B. Wei;K. Furukawa;M. Ichikawa;T. Koyama;Y. Taniguchi
通过改变梯形电脉冲的瞬态时间，研究了有机电致发光器件（OLED）在重复频率为1 kHz的梯形电脉冲作用下的瞬态电致发光（EL）和瞬态电流（TC）。我们的数据表明，脉冲的瞬态时间的变化不仅影响瞬态EL的延迟时间和上升时间，但也改变了TC的时间演变。此外，我们还研究了不同异质结有机薄膜界面层中的电荷积累，特别是以1，4-双[2-[4-[N，N-二（对甲苯基）氨基]苯基]乙烯基]苯为发光层的脉冲器件在关断时的电致发光尖峰。通过计算方法进一步分析了TC的动力学行为。
We investigated the transient electroluminescence (EL) and transient current (TC) of organic light-emitting diodes under a trapezoid electric pulse at a repetition rate of 1 kHz by changing the transient time of the pulse from ∼ ns to ∼ µs. Our data shows that the change in the transient time of the pulse not only affects the delay time and rise time of transient EL, but also changes the temporal evolution of TC. In addition, we studied the charge accumulation in the interfacial layer of organic films with different heterostructures, particularly the EL spike from a pulsed device with 1,4-Bis[2-[4-[N,N-di( p-tolyl)amino]phenyl]vinyl]benzene as a light-emitting layer at switch-off. The dynamic behavior of TC was further analyzed by computational approaches.