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在阳极和空穴传输层分别引入氧化镍纳米结构缓冲层,制备了蓝色有机发光二极管,对二极管的电学和光学特性进行了测试分析,研究了采用电化学方法制备的氧化镍纳米结构对器件的影响。结果表明,纳米结构氧化镍缓冲层能够有效地提高空穴-电子对的产生和复合效率,它的引入带来了高效的空穴注入及发光层中的载流子平衡,能有效提高有机发光二极管的电致发光特性。氧化镍缓冲层沉积时间为30 s的器件具有最高的亮度和电流效率,分别为42 460 cd/m~2和24 cd/A,该器件的CIEx,y色坐标为(0.212 9,0.325 2)。
In the anode and hole transport layer were introduced nickel oxide nanostructured buffer layer, the preparation of a blue organic light-emitting diode, the electrical and optical characteristics of the diode were tested and analyzed by the electrochemical method of nickel oxide nanostructures on the device Impact. The results show that the nanostructured nickel oxide buffer layer can effectively improve the hole-electron pair generation and recombination efficiency, and the introduction of the nanostructured nickel oxide buffer layer results in efficient hole injection and carrier balance in the light-emitting layer, which can effectively improve the organic luminescence Diode electroluminescent properties. The device with 30 s deposition time has the highest brightness and current efficiency of 42 460 cd / m 2 and 24 cd / A, and the CIEx and y color coordinates of this device are (0.212 9, 0.325 2) .