【摘要】 设计并制作了三个不同厚度的红色有机微腔电致发光器件,器件结构是:Glass/DBR/ITO(厚度分别为150,182,196nm)/NPB(82nm)/DCM-Alq3(71nm)/Mg-Ag(70nm)。实验结果表明,随着氧化铟锡(ITO)的厚度增加,导致整个微腔器件的腔长度增加,器件的谐振模式(发光峰值)改变,由604nm红移到640nm最后到656nm。CIE色坐标由(0.52,0.48)变至(0.61,0.37)至(0.61,0.38),色纯度逐渐提高。性能较好的是ITO厚度为150nm的微腔器件,中心波长位于604nm处,最大亮度达到32008cd/m2,最大电流效率为3.15cd/A。这表明ITO厚度对微腔有机电致发光器件的发光性能有着很大影响。更多还原

【Abstract】 Three red microcavity organic electroluminescent devices(MOLED)with different thicknesses were designed and fabricated,the device structure was as follows:Glass/DBR/ITO(thickness of 150,182,and 196 nm respectively)/NPB(82 nm)/DCM-Alq3(71 nm)/Mg-Ag(70 nm).With the increase of ITO layer,the cavity length of microcavity devices increased accordingly,and the devices’ resonant mode(light-emitting peak)changed from 604 nm to 640 nm and then to 656 nm,CIE color coordinate changed from(0.52,0.48)to(0.61,0.37)and then to(0.61,0.38),indicating that the color purity increased gradually.The optimal electroluminescent performance was observed in the sample with the ITO thickness of 150 nm,the emitting center wavelength was 604 nm,the maximum brightness reached 32008 cd/m2,and the maximum current efficiency was 3.15 cd /A.It shows that the ITO thickness of the microcavity light-emitting devices affects the microcavity OLED’s light-emitting properties a lot due to the micro-cavity effect.更多还原