中文摘要：

为了提高有机电致发光器件OLED的发光效率，引入2T-NATA作为空穴注入层，制备了结构为ITO／2T-NATA（Xnm）／NPB（25nm）／Alq3：C545T（20nm：质量分数4．5％）／Alq3（30nm）／LiF（1nm）／Al（100nm）的绿光器件，其中X为空穴注入层2T-NATA厚度。分析了2T-NATA的蒸镀厚度分别0，5，10，15，20，25，30，35nm时器件的发光性能。结果表明，2T-NATA的HOMO能级较好的与ITO功函数匹配，降低了空穴注入势垒，引入空穴注入层2T-NATA提高了器件的发光亮度和效率。当2T—NATA厚度为15nm时，器件的效果最好，起亮电压只需2．87V，亮度最高达到18000cd／m^2，是不引入空穴注入层亮度的5倍多，在12v时发光效率可达11．4cd／A。

英文摘要：

The hole injection materials 2T-NATA was introduced into green OLED to improve the light efficiency. The green OLED was prepared with a structure of ITO/2T-NATA （ X nm） /NPB （25 nm）/ Alq3： C545T （20 nm： mass fraction 4.5%） /Alq3 （30 nm） /LiF （1 nm） /Al（100 nm）, and the X is the thickness of hole injection layer of OLED. The thickness of 2T-NATA, ranging from 0 to 35 nm with a step of 5 nm, was systematically analyzed from the aspect of electrolumineseence characteristic. The results show that 2T-NATA＇s HOMO level can reasonably match ITO work function, which reduces the hole-injecting barrier and improves the brightness and efficiency of devices. The maximum brightness of devices with 15 nm 2T-NATA acting as hole injection layer reached 18 000 cd/m2 at 12 V, which is nearly 5 times than that of the device without it. What＇s more, luminescence efficiency reaches 11.4 cd/A at 12 V.