Observation of Metal-free Phthalocyanine Adsorbed on SiC Reconstructed Surface

Metal-free phthalocyanine (H2Pc) has unique features, such as visible light absorption and excellent thermal and chemical stabilities, which render them applicable to organic electronic devices. However, the condition of the phthalocyanine (Pc) film affects the performance of these devices. Therefor...

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Bibliographic Details
Published inE-journal of surface science and nanotechnology Vol. 20; no. 4; pp. 257 - 260
Main Authors Emoto, Satoru, Isobe, Asuta, Ikari, Tomonori, Kawamura, Kazuya, Kuroki, Shin-ichiro, Naitoh, Masamichi
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo The Japan Society of Vacuum and Surface Science 04.08.2022
Japan Science and Technology Agency
Subjects
Adsorption
Control methods
Deposition
Electromagnetic absorption
Electronic devices
Film growth
Graphene
Island growth
Low energy electron diffraction
Metastable atom induced electron spectroscopy (MIES)
Metastable atoms
Phthalocyanine
SiC
Silicon carbide
Surface chemistry
Surface electronic phenomena
Surface states
Thin films
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Summary:Metal-free phthalocyanine (H2Pc) has unique features, such as visible light absorption and excellent thermal and chemical stabilities, which render them applicable to organic electronic devices. However, the condition of the phthalocyanine (Pc) film affects the performance of these devices. Therefore, it is necessary to establish a control method for Pc adsorption and the thin-film growth. In the present study, we observed the electronic structures and morphology of H2Pc structures adsorbed on reconstructed SiC surfaces using metastable atom induced electron spectroscopy, low-energy electron diffraction, and atomic force microscopy. The H2Pc molecules were deposited on each SiC reconstructed surface (particularly graphene) until the H2Pc thin film was formed. The molecular orientation of H2Pc adsorbed on the graphene surface changed from a tilted structure to a flat-lying structure with the increase in the deposition time. As the amount of deposition increases, the H2Pc molecules formed a thin film on the surface during the island growth. We further discuss the adsorption structure and the thin-film growth of the H2Pc molecules with the increasing deposition time on the SiC reconstructed surface.
ISSN:1348-0391
1348-0391
DOI:10.1380/ejssnt.2022-040