采用湿法旋涂技术制备量子点发光二极管器件(QD-LEDs)。PEDOT作为空穴注入层,TFB作为空穴传输层,量子点作为发光层,采用无机二氧化钛(TiO2)作为电子传输层,在相同的工艺条件下调节量子点层旋涂转速(800~1100 r/min),制备不同厚度的量子点发光二极管发光器件(QD-LEDs)。实验结果表明,当量子点层的旋涂转速为900 r/min时,此时的量子点层厚度为30 nm,所制备的量子点发光二极管器件(QD-LEDs)的发光性能最好,开启电压最低,只有5.5 V。
Quantum dot light emitting diode devices (QD-LEDs)havebeen developedwith wet spin coating technique.In the QDLEDs,PEDOT is used as hole injection layer,TFB as electron transport layer,quantum dots as emissive layer,and inorganic titanium dioxide (TiO2 )as a hole transport layer.In the same processing conditions,thequantum dot layer spin speed wasadjusted-from 800 to 1 100 r/min,and quantum dot light emitting diode devices (QD-LEDs)prepared with different thicknesses.Experi-ment results show that,when the spin-coating speed of quantum dot layer is 900 r/min and quantum dot layer thickness is 30 nm,the QD-LED performance is best with a lowturn-on voltage of 5.5V.