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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국진공학회(ASCT) Applied Science and Convergence Technology Applied Science and Convergence Technology Vol.30 No.1
- 발행연도
- 2021.1
- 수록면
- 25 - 28 (4page)
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초록· 키워드
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Ultraviolet-ozone (UVO) treatment modifies the surface properties of film for use in thin-film optoelectronics. In particular, the hydrophobic nature of the surface of organic films can be changed to a hydrophilic nature, thereby enabling a multilayer structure using a solution process. However, the electronic structure of organic films with UVO treatment has not been investigated in detail. In this study, the changes in the electronic structure of tetra-tert-butyl copper phthalocyanine (ttb-CuPc) films by UVO treatment were explored using UV-vis absorption spectroscopy and X-ray photoelectron spectroscopy (XPS). The ttb-CuPc film was fabricated by spin coating, and various UVO treatment times were applied. As the UVO treatment time increased, the absorption intensity of the ttb-CuPc films exponentially decayed. In the XPS spectra, the oxidation process was observed in two stages (macrocyclic isoindole units followed by peripheral ttb units). Upon oxidation, while the C and N atoms in the ligands exhibited an electron-donating characteristic, the central Cu atom showed an electron-withdrawing nature. Such an altered charge distribution on the ttb-CuPc molecule can significantly influence charge transport in optoelectronic devices.
목차
ABSTRACT
1. Introduction
2. Experimental details
3. Results and discussion
4. Conclusion
References
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