论文部分内容阅读
使用PCDTBT作为发光层材料,制备了发光波长为705 nm的红色有机电致发光器件,其结构为ITO/PEDOT:PSS/PCDTBT/BCP/LiF/Al.器件启亮电压为2 V,在9 V时器件达到最高亮度,为29000 cd/m2,最大电流效率为3.5 cd/A.还研究了不同退火温度对器件发光性能的影响.实验结果表明,退火温度为50?C时器件的性能最佳,其原因是此时既有利于溶剂挥发,又保持了分子结构的稳定性,而高温退火降低了PCDTBT的π-π堆积的有序性,从而使得器件性能下降.
The structure of the device is ITO / PEDOT: PSS / PCDTBT / BCP / LiF / Al with PCDTBT as the material of the light-emitting layer. The device has a turn-on voltage of 2 V and a voltage of 9 V The device achieves the highest luminance of 29000 cd / m2 and the maximum current efficiency of 3.5 cd / A. The effect of different annealing temperature on the device luminescence performance is also studied.The experimental results show that the device performance is best when the annealing temperature is 50 ℃ The reason for this is that both the volatilization of the solvent and the stability of the molecular structure are maintained at this time, and the high-temperature annealing reduces the orderliness of the π-π stacking of the PCDTBT, thereby degrading the device performance.