4.8 Article

p-i-n Homojunction in Organic Light-Emitting Transistors

Journal

ADVANCED MATERIALS
Volume 23, Issue 24, Pages 2753-2758

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201004572

Keywords

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Funding

  1. Ministry of Education, Culture, Sports, Science, Technology of Japan [17069003, 17204022, 18710091, 22656003]
  2. Funding Program for Next Generation World-Leading Researchers
  3. Japan Science Society
  4. Grants-in-Aid for Scientific Research [17204022, 18710091, 23550208, 21224009, 22350082] Funding Source: KAKEN

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A new method for investigating light-emitting property in organic devices is demonstrated. We apply the ambipolar light-emitting transistors (LETS) to directly observe the recombination zone, and find a strong link between the transistor performance and the zone size. This finding unambiguously indicates that the light emission comes from the electric-field-induced p-i-n homojunction in ambipolar LETs.

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