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

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Zhao Y., Chen R., Gao Y., Leck K. S., Yang X., Liu S., ...More

ORGANIC ELECTRONICS, vol.14, no.12, pp.3195-3200, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 12
  • Publication Date: 2013
  • Doi Number: 10.1016/j.orgel.2013.09.028
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3195-3200
  • Keywords: Organic light-emitting diode, Alternating current, AC driving, Color tunable, Charge generation layer, Transition metal oxide, CHARGE-GENERATION LAYERS, TRANSITION-METAL OXIDES, HOLE-TRANSPORT, EFFICIENT, INJECTION, ELECTROLUMINESCENCE, ARCHITECTURE, INTERFACE, MOLECULES
  • Abdullah Gül University Affiliated: Yes


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. (C) 2013 Elsevier B.V. All rights reserved.