【摘要】：以ITO/MoO_3/NPB/Ir(ppy)_3/TPBi/Cs_2CO_3/Al器件為基礎,采用NPB和TPBi作為間隔層(spacer)制備了器件ITO/MoO_3/NPB/Ir(ppy)_3/NPB(spacer)/TPBi/Cs_2CO_3/Al和ITO/MoO_3/NPB/TPBi(spacer)/Ir(ppy)_3/TPBi/Cs_2CO_3/Al,并通過調節(jié)間隔層厚度、分析器件的電致發(fā)光(EL)光譜,研究其對激子復合區(qū)域的調控。實驗結果表明,所有器件的激子復合區(qū)域均位于NPB和Ir(ppy)_3,且復合區(qū)域隨電壓的增大和間隔層的增厚向NPB移動。NPB(spacer)的厚從0nm增至10nm,色坐標均勻變化,總變化值Δ(x,y)(0.02,0.10);而TPBi(spacer)對應的色坐標變化量Δ(x,y)(0.04,0.20),厚≤6nm時,光譜變化較小(即調節(jié)幅度較小),而10nm時光譜變化較大。這表明,通過調節(jié)間隔層材料或者厚度,就能簡單、方便地調控激子復合區(qū)域,為不同復合區(qū)域發(fā)光強度的粗調/微調和白光器件的設計提供依據(jù)。
[Abstract]:Based on the ITO/MoO_3/NPB/Ir (ppy) _ 3/TPBi/Cs_2CO_3/Al device, The devices ITO/MoO_3/NPB/Ir (ppy) _ 3/NPB (spacer) / TPBi/Cs_2CO_3/Al and ITO/MoO_3/NPB/TPBi (spacer) / Ir (ppy) _ 3/TPBi/ were fabricated by using NPB and TPBi as spacer (spacer). Cs_2CO_3/Al, By adjusting the thickness of the spacer layer, the electroluminescent (EL) spectra of the device were analyzed, and its regulation on the exciton complex region was studied. The experimental results show that the exciton composite regions of all devices are located in NPB and Ir (ppy) _ 3, and the composite region moves to NPB with the increase of voltage and the thickness of the spacer layer. The thickness of NPB (spacer) increases from 0nm to 10 nm, and the color coordinates vary uniformly. The total change value 螖 (x, y) (0.02, 0.10); While the color coordinate change 螖 (x, y) (0.04,0.20) corresponding to TPBi (spacer), the spectral variation is smaller (i.e., the adjustment amplitude is smaller) when the thickness 鈮，

本文編號：2455878