中文摘要：

通过对AlGaInP LED器件进行电流分布模拟,得出电流扩展长度与注入电流和电流扩展层方块电阻之间的变化关系.实验制备出带有Au纳米颗粒的碳纳米管（Au-CNT）作为电流扩展层的LED器件,20 mA电流下,测得其光功率比无扩展层器件提升了33％.模拟结果与实验结果具有较好的一致性,说明带有Au纳米颗粒的碳纳米管透明导电层可以起到增强电流扩展作用,有效提高器件光功率.

英文摘要：

In this paper, by making simulations on the current spreading of A1GaInP LEDs, it is investigated the relationship between current spreading length and the injection current or sheet resistance of conductive layer. The LEDs using Au nanoparticles carbon nanotubes（CNT） as the current spreading layer were fabricated, and it is measured that the output power is enhanced by 33% compared with that of the devices without preading layer. The results of simulation theory agrees well with the experimental results. It is indicated that the CNT with Au nanoparticles can be used as the current spreading layer so as to improve the output power of LED effectively.