CAJ | 학술논문

通过引入新型红光材料R-4B和绿光材料Ir （ppy ）2 acac混合来实现黄光显示．器件结构为ITO/MoO3（40 nm）/NPB（40 nm）/TCTA（10 nm）/CBP：R-4B（x）：Ir（ppy）2acac（8％）（30 nm）/BCP（10 nm）/Alq3（40 nm）/LiF（1 nm）/Al（100 nm），其中 x＝1％、2％、3％，通过讨论掺杂浓度对器件性能的影响，得到如下结论：随着红光掺杂比例的增加，红光光强增加，发光颜色由绿色逐渐转变为黄色，但是器件整体的效率、亮度下降．当 x＝3％时，红光光强不再增加．综合考虑器件性能，发现当红光掺杂比例为2％时，黄色磷光O L ED的性能相对最好，色坐标为（0．430．53），发光亮度可达4000 cd/m2，在电压为5 V时，效率可达32 cd/A ．
통과인입신형홍광재료R-4B화록광재료Ir （ppy ）2 acac혼합래실현황광현시．기건결구위ITO/MoO3（40 nm）/NPB（40 nm）/TCTA（10 nm）/CBP：R-4B（x）：Ir（ppy）2acac（8％）（30 nm）/BCP（10 nm）/Alq3（40 nm）/LiF（1 nm）/Al（100 nm），기중 x＝1％、2％、3％，통과토론참잡농도대기건성능적영향，득도여하결론：수착홍광참잡비례적증가，홍광광강증가，발광안색유록색축점전변위황색，단시기건정체적효솔、량도하강．당 x＝3％시，홍광광강불재증가．종합고필기건성능，발현당홍광참잡비례위2％시，황색린광O L ED적성능상대최호，색좌표위（0．430．53），발광량도가체4000 cd/m2，재전압위5 V시，효솔가체32 cd/A ．
In the paper ,yellow phosphorescent OLEDs were prepared by mixing new red ma-terials R-4B and green material Ir(ppy)2acac with the body material CBP together .The de-vice structure was as follows :ITO/MoO3 (40 nm)/NPB(40 nm)/TCTA(10 nm)/CBP :R-4B (x):Ir(ppy)2acac(8% )(30 nm)/BCP(10 nm)/Alq3 (40 nm)/LiF(1 nm)/Al(100 nm) ,x=1% ,2% ,3% .The effect of doping concentration on OLED property was discussed in the pa-per .It′s indicated:with the increasing of doping concentration ,the intensity of red light was increasing and the color was from green to yellow .But the emission efficiency and brightness were decreased .The device has the best performance when x=2% .The maximum brightness was 4 000 cd/cm2 ,the maximum current efficiency was 32 cd/A on 5 V ,and color coordinates was(0.430.53).