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通过对电子传输层和空穴传输层的共同掺杂 ,达到提高有机发光二极管 (OLED)电流效率的目的 .与常规的在电子传输层中掺杂有机染料的掺杂器件相比 ,本实验是在 Alq(电子传输层材料 )与 NPB(空穴传输层材料 )形成的均匀互掺有源层中 ,再掺杂染料 Rubrene.此种结构 ,其有源层能有效地限载流子而增加电子和空穴载流子相遇的几率 ,进而提高复合效率 ,使电流效率明显提高 .同时 ,有源层的连续生长避免了有机层间界面的形成 ,改善了器件的稳定性 .比较此结构器件与常规掺杂器件的特性 ,并对其发射机理进行讨论 .
The purpose of improving the current efficiency of organic light-emitting diode (OLED) is achieved through the common doping of the electron transport layer and the hole transport layer.Compared to the conventional doping devices doped with organic dyes in the electron transport layer, Dopant Rubrene is further doped into a uniform inter-doped active layer formed by Alq (electron transport layer material) and NPB (hole transport layer material), and the active layer of this structure can effectively limit the number of carriers and increase The chances of electrons and hole carriers meeting each other, thereby increasing the recombination efficiency and obviously improving the current efficiency. Meanwhile, the continuous growth of the active layer avoids the formation of the interface between the organic layers and improves the stability of the device. With the conventional doping device characteristics, and its emission mechanism is discussed.