中文摘要：

叠层有机发光二极管因其具有更高的亮度、效率以及稳定性,其研究备受关注.本文综述了叠层有机发光二极管的最新进展;总结了作者研究小组基于有机半导体异质结的概念,设计了由一种p型有机半导体和一种n型有机半导体层层组成的双层有机半导体异质结电荷产生层,并用它们作为连接单元制备了叠层有机发光二极管,器件的电压得到了降低,功率效率得到了提高.通过对电荷产生层的工作机制的深入剖析,揭示了降低电压、提高功率效率的内在物理原因,为进一步设计高性能有机电致发光器件提供了新的思路;最后对叠层有机发光二极管的未来发展方向进行了展望.

英文摘要：

Tandem organic light-emitting diodes（OLEDs） have attracted a great deal of attention from researchers because of their high luminance,efficiency and stability.This paper summarizes past advances in the study of tandem OLEDs.Then,we present a bilayer organic semiconductor heterojunction charge generation layer made of p-and n-type organic semiconductors.A low operational voltage,high power efficiency tandem OLED was fabricated using this charge generation layer as a connecting unit.We also analyze the physical mechanisms that guide the operation of the device,and discuss methods for reducing the voltage and enhancing the power efficiency.Our design concept provides a template for the fabrication of high performance tandem OLEDs.Finally,we discuss the future of tandem OLED technologies.