CAJ | 학술논문

以9,9′-(1,3-苯基)二-9H-咔唑(mCP)和1,4-二(三苯甲硅烷基)苯(UGH2)为母体,将常用的蓝光染料二(3,5-二氟-2-(2-吡啶)苯基-(2-吡啶甲酸根))合铱(Ⅲ)(FIrpic)掺入这两种母体材料中,制得具有双发光层结构的蓝色磷光有机电致发光器件,并对整个物理机制进行了阐述。该器件较基于mCP或UGH2为母体的单发光层器件有着更高的器件效率。器件的最大电流效率、功率效率、外量子效率分别为21.13 cd/A、14.97 lm/W、10.56%。器件亮度从100 cd/m2到3000 cd/m2时,效率滚降为34.2%。
이9,9′-(1,3-분기)이-9H-잡서(mCP)화1,4-이(삼분갑규완기)분(UGH2)위모체,장상용적람광염료이(3,5-이불-2-(2-필정)분기-(2-필정갑산근))합의(Ⅲ)(FIrpic)참입저량충모체재료중,제득구유쌍발광층결구적람색린광유궤전치발광기건,병대정개물리궤제진행료천술。해기건교기우mCP혹UGH2위모체적단발광층기건유착경고적기건효솔。기건적최대전류효솔、공솔효솔、외양자효솔분별위21.13 cd/A、14.97 lm/W、10.56%。기건량도종100 cd/m2도3000 cd/m2시,효솔곤강위34.2%。
A highly efficient blue phosphorescent organic light-emitting diode ( OLED) with double emitting layer (DEL) structure was prepared using both 1,3-bis(carbazol-9-yl)benzene (mCP) and p-bis(triphenylsilyly) benzene (UGH2) as host material, and iridium(Ⅲ) bis[(4,6-difluo-rophe-nyl)-pyridinato-N,C2](FIrpic) as phosphorescent guest material. The physical mechanisms on the high efficiency were discussed. Compared to the device with single emitting layer using mCP or UGH2 as host material, the OLED with double emitting layer structure has higher efficiency. The maximum current efficiency, power efficiency, and external quantum efficiency of the device are 21. 13 cd/A, 14. 97 lm/W, and 10. 56%, respectively. The efficiency roll-off between 100 cd/m2 and 3 000 cd/m2 is 34. 2%.