作　　者： ; ; ; ; ; ; ; ;

机构地区： 吉林师范大学信息技术学院

出　　处： 《光电子．激光》 2011年第9期1283-1285,共3页

摘　　要： 为了充分利用发光层中主客体间的能量转移和空穴阻挡层(HBL)的空穴阻挡作用,制作了结构为ITO/m-MTDATA(25 nm)/NPB(15 nm)/Ir(ppz)3(10 nm)/Simcp:Firpic(30 nm,6%)/HBL(35 nm)/LiF(1 nm)/Al(200 nm)的高效率蓝光器件,研究了3种类型的HBL对蓝光器件电流效率的影响。结果表明,HOMO能级较低的BCP是性能最好的空穴阻挡材料,以其为HBL,当厚度为35 nm时,8 V电压下器件的最大电流效率达到14.57 cd/A。 In order to make full use of energy transferring and hole blocking between the subject and the object in the light-emitting layer,the high efficiency blue light device is fabricated,whose structure is ITO/m-MTDATA（25 nm）/NPB（15 nm）/Ir（ppz）3（10 nm）/Simcp：Firpic（30 nm,6%）/HBL（35 nm）/ LiF（1 nm）/Al（200 nm）.We have studied the effect of three different hole blocking layers on the current efficiency of blue light devices.The results has demonstrated that the material BCP,whose HOMO level is lower,has more influence on current efficiency.When the blocking layer is BCP and its thickness is 35 nm,the maximum current efficiency can reach 14.57 cd/A at 8 V bias voltage.

关 键 词： 电流效率 能级 空穴阻挡层

领　　域： [电子电信]