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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Organic semiconductors have received tremendous attention for their research because of their tunable electrical and optical properties that can be achieved by changing their molecular structure. However, organic materials are inherently unstable in the presence of oxygen and moisture. Therefore, it is necessary to develop moisture and air stable semiconducting materials that can replace conventional organic semiconductors. In this study, we developed a NiOx thin film through a solution process. The electrical characteristics of the NiOx thin film, depending on the thermal annealing temperature and UV-ozone treatment, were determined by applying them to the hole injection layer of an organic light-emitting diode. A high annealing temperature of 500oC and UV-ozone treatment enhanced the conductivity of the NiOx thin films. The optimized NiOx exhibited beneficial hole injection properties comparable those of 1,4,5,8,9,11-hexaazatriphenylene hexacarbonitrile (HAT-CN), a conventional organic hole injection layer. As a result, both devices exhibited similar power efficiencies and the comparable electroluminescent spectra. We believe that NiOx could be a potential solution which can provide robustness to conventional organic semiconductors.
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참고문헌 (19)
참고문헌 신청
B. Li / 2021 / Intramolecular Through-Space Charge Transfer Based TADFActive Multifunctional Emitters for High Efficiency Solution-Processed OLED / Adv. Optical Mater 9(5):2100180(1)~2100180(10)
K. H. Kim / 2014 / Phosphorescent dye-based supramolecules for high-efficiency organic light-emitting diodes / Nat. Commun 5:4769(1)~4769(8)
S. Y. Kim / 2013 / Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter / Adv. Funct. Mater. 23(31):3896~3900
E. Forsythe / 2000 / Tuning the Carrier Injection Efficiency for Organic Light-Emitting Diodes / J. Phys. Chem. B 104(16):3948~3952
J. H. Kim / 2014 / Carrier injection efficiencies and energy level alignments of multilayer graphene anodes for organic light-emitting diodes with different hole injection layers / Carbon 79:623~630
K. H. Kim / 2014 / Phosphorescent dye-based supramolecules for high-efficiency organic light-emitting diodes / Nat. Commun 5:4769(1)~4769(8)
S. Y. Kim / 2013 / Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter / Adv. Funct. Mater. 23(31):3896~3900
E. Forsythe / 2000 / Tuning the Carrier Injection Efficiency for Organic Light-Emitting Diodes / J. Phys. Chem. B 104(16):3948~3952
J. H. Kim / 2014 / Carrier injection efficiencies and energy level alignments of multilayer graphene anodes for organic light-emitting diodes with different hole injection layers / Carbon 79:623~630
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