CAJ | 학술논문

为了分析不同阴极耦合层对顶发射白光 OLED 器件光电性能的影响，数值计算了半透明阴极组成的多层膜系(ETL/EIL/Mg：Ag/折射率匹配层)的透过率和损耗；同时，采用共阴极结构设计制备了顶发射白光 OLED器件，并对不同折射率匹配层制备的顶发射白光 OLED器件的光电特性进行了研究。结果表明：采用相同厚度 LiF 和Al2 O3薄膜作为阴极耦合层时，多层膜系光学透过率和损耗曲线存在较大差异；在20 mA/cm2电流密度下，随着观测角度的增大，采用LiF＋Al2 O3双层折射率匹配层制备的器件电致发光谱峰位发生蓝移，但在整个视角内，器件的色坐标均稳定在白光等能点附近，这表明顶发射白光器件的色坐标可以通过折射率匹配层调节，使得器件在较大视角范围均能实现白光发射。
위료분석불동음겁우합층대정발사백광 OLED 기건광전성능적영향，수치계산료반투명음겁조성적다층막계(ETL/EIL/Mg：Ag/절사솔필배층)적투과솔화손모；동시，채용공음겁결구설계제비료정발사백광 OLED기건，병대불동절사솔필배층제비적정발사백광 OLED기건적광전특성진행료연구。결과표명：채용상동후도 LiF 화Al2 O3박막작위음겁우합층시，다층막계광학투과솔화손모곡선존재교대차이；재20 mA/cm2전류밀도하，수착관측각도적증대，채용LiF＋Al2 O3쌍층절사솔필배층제비적기건전치발광보봉위발생람이，단재정개시각내，기건적색좌표균은정재백광등능점부근，저표명정발사백광기건적색좌표가이통과절사솔필배층조절，사득기건재교대시각범위균능실현백광발사。
In order to analyse the effect of different outcouping layers on optical and electrical proper-ties of top-emitting organic white light emitting devices,in experiment,the transmittance and loss (absorption and reflection)of ETL/EIL/Mg∶Ag/matching layers were numerically calculated.At the same time,some top organic white light emitting devices with common cathode configurations were fabricated,and the optical and electrical properties of OLED devices prepared with different re-fractive index matching layers were analyzed.The experimental results showed that there were biggish difference in optical transmittance and loss of ETL/EIL/Mg∶Ag/matching layers with same thick-ness LiF and Al2 O3 .At the current density of 20 mA/cm2 ,according to the change of viewing angle from 0°to 60°,the electroluminescence emission spectra of OLED devices prepared with dual index matching layers occured to blue shift,but throughout the viewing angle from 0°to 60°,the color coor-dination always stayed close to 0.33,which indicated that the color coordinates of top-emitting white light devices can be adj usted by different refractive index matching layer to achieve white light emis-sion at large viewing angle.