AC-driven, color-and brightness-tunable organic light-emitting diodes constructed from an electron only device

作者：Zhao, Yongbiao; Chen, Rui; Gao, Yuan; Leck, Kheng Swee; Yang, Xuyong; Liu, Shuwei; Abiyasa, Agus Putu; Divayana, Yoga; Mutlugun, Evren; Tan, Swee Tiam; Sun, Handong^*; Demir, Hilmi Volkan; Sun, Xiao Wei

来源：Organic Electronics, 2013, 14(12): 3195-3200.

DOI：10.1016/j.orgel.2013.09.028

• Organic light-emitting diode
• Alternating current
• AC driving
• Color tunable
• Charge generation layer
• Transition metal oxide

In this paper, a color- and brightness-tunable organic light-emitting diode (OLED) is reported. This OLED was realized by inserting a charge generation layer into an electron only device to form an n-i-p-i-n structure. It is shown that, by changing the polarity of applied voltage, only the p-i-n junction operated under positive bias can emit light and, by applying an AC voltage, emission from both junctions was realized. It is also shown that, by using a combination of blue- and red-emiting layers in two p-i-n junctions, both the color and brightness of the resulting white OLED can be tuned independently by changing the positive and negative amplitudes of the AC voltage.

• 出版日期2013-12
• 单位南方科技大学