Optoelectronics Letters, Volume. 11, Issue 3, 187(2015)
High efficiency organic light-emitting diodes using CuOx/Cu dual buffer layers
An organic light-emitting diode (OLED) device with high efficiency and brightness is fabricated by inserting CuOx/Cu dual inorganic buffer layers between indium-tin-oxide (ITO) and hole-transport layer (HTL). The CuOx/Cu buffer layer limits the operating current density obviously, while the brightness and efficiency are both enhanced greatly. The highest brightness of the optimized device is achieved to be 14 000 cd/m2at current efficiency of 3 cd/A and bias voltage of 15 V, which is about 50% higher than that of the compared device without CuOx/Cu buffer layer. The highest efficiency is achieved to be 5.9 cd/A at 11.6 V with 3 400 cd/m2, which is almost twice as high as that of the compared device.
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CHEN Zheng, DENG Zhen-bo. High efficiency organic light-emitting diodes using CuOx/Cu dual buffer layers[J]. Optoelectronics Letters, 2015, 11(3): 187
Received: Feb. 4, 2015
Accepted: --
Published Online: Oct. 12, 2017
The Author Email: Zheng CHEN (chenzheng0913@gmail.com)