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Song, Myoung Hoon
Organic Photonics & Optoelectronics Lab
Research Interests
  • Organic optoelectrics, perovskite light-emitting diodes, surface treatment, photonic crystals

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Efficient hybrid organic-inorganic light emitting diodes with self-assembled dipole molecule deposited metal oxides

Cited 44 times inthomson ciCited 29 times inthomson ci
Title
Efficient hybrid organic-inorganic light emitting diodes with self-assembled dipole molecule deposited metal oxides
Author
Park, Ji SunLee, Bo RamLee, Ju MinKim, Ji-SeonKim, Sang OukSong, Myoung Hoon
Keywords
Benzothiadiazoles; Charge injection barriers; Deposited metal; Device performance; Dipole molecules; Lowest unoccupied molecular orbital; Organic-inorganic; Polymeric light-emitting diodes; Self-assembled; ZnO; ZnO surface
Issue Date
201006
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.96, no.24, pp.243306 -
Abstract
We investigate the effect of self-assembled dipole molecules (SADMs) on ZnO surface in hybrid organic-inorganic polymeric light-emitting diodes (HyPLEDs). Despite the SADM being extremely thin, the magnitude and orientation of SADM dipole moment effectively influenced the work function of the ZnO. As a consequence, the charge injection barrier between the conduction band of the ZnO and the lowest unoccupied molecular orbital of poly(9,9(')-dioctylfluorene)-co-benzothiadiazole could be efficiently controlled resulting that electron injection efficiency is remarkably enhanced. The HyPLEDs modified with a negative dipolar SADM exhibited enhanced device performances, which correspond to approximately a fourfold compared to those of unmodified HyPLEDs.
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DOI
http://dx.doi.org/10.1063/1.3453759
ISSN
0003-6951
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MSE_Journal Papers
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