发光学报, 2012, 33 (4): 408, 网络出版: 2012-04-16
柠檬酸钾电子注入层对有机电致发光器件的影响
Effect of Potassium Citrate as Electron Injection Material on Organic Light Emitting Diodes
摘要
使用柠檬酸钾(C6H5K3O7)作为电子注入材料,制备了多层有机电致发光器件。当柠檬酸钾阴极修饰层厚度为0.5 nm时,得到3.6 cd/A 的发光效率,高于0.5 nm LiF作阴极修饰层时的发光效率(2.5 cd/A) 。器件的开启电压相比0.5 nm LiF作阴极修饰的器件降低了0.5 V。实验结果表明,柠檬酸钾(C6H5K3O7)是一种良好的电子注入材料。
Abstract
The multilayer organic light-emitting diodes (OLEDs) using potassium citrate (C6H5K3O7) as the electron-injection material have been fabricated. The electroluminescence (EL) efficiency of 3.6 cd/A was obtained by inserting 0.5-nm-thick C6H5K3O7 as electron injecting layer, which is higher than that of 2.5 cd/A in reference device with 0.5-nm-thick LiF. The turn-on voltage was decreased 0.5 V compared with the reference device with 0.5-nm-thick LiF. The results demonstrated that C6H5K3O7 is a promising electron injection material.
赵建伟, 高靖欣, 李佳. 柠檬酸钾电子注入层对有机电致发光器件的影响[J]. 发光学报, 2012, 33(4): 408. ZHAO Jian-wei, GAO Jing-xin, LI Jia. Effect of Potassium Citrate as Electron Injection Material on Organic Light Emitting Diodes[J]. Chinese Journal of Luminescence, 2012, 33(4): 408.