Journal
ORGANIC ELECTRONICS
Volume 53, Issue -, Pages 320-324Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2017.12.001
Keywords
Phthalocyanine; Nanofiber; Carrier mobility; Molecular orientation; Vertical organic transistor
Funding
- New Energy and Industrial Technology Development Organization (NEDO)
- Japan Society for the Promotion of Science [JP17H03134]
- Grants-in-Aid for Scientific Research [17H03134] Funding Source: KAKEN
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A self-assembled nanofiber film of octabutoxy- phthalocyanine (H2PCOC4) was prepared by a simple spin-coating method with a mixed solvent. This film indicated a high vertical hole mobility up to 0.12 cm(2) V-1 s(-1) when the nanofiber structure is formed from a mixed solvent of chloroform and o-dichlorobenzene. The high vertical mobility is attributed to the unique crystal structure of H2PCOC4 and molecular arrangement in the fiber film. Quantum chemical calculations reveal that the crystal structure of H2PCOC4 enables two-dimensional carrier transport that is advantageous for the vertical transport. The nanofiber films were applied to vertical-type organic transistors, resulting in higher output current compared to a non-structured film.
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