Rectangular Nanotubes of Copper Phthalocyanine: Application to a Single Nanotube Transistor
- Authors
- Jung, Jin S.; Lee, Jin W.; Kim, Kihyun; Cho, Mi Y.; Jo, Seong G.; Joo, Jinsoo
- Issue Date
- 13-4월-2010
- Publisher
- AMER CHEMICAL SOC
- Keywords
- FIELD-EFFECT TRANSISTORS; THIN-FILM TRANSISTORS; LIGHT-EMITTING-DIODES; CRYSTAL NANOWIRES; MOBILITY; NANOMATERIALS; POLYANILINE; PERFORMANCE; FABRICATION; PORPHYRINS
- Citation
- CHEMISTRY OF MATERIALS, v.22, no.7, pp.2219 - 2225
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY OF MATERIALS
- Volume
- 22
- Number
- 7
- Start Page
- 2219
- End Page
- 2225
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/116634
- DOI
- 10.1021/cm903492k
- ISSN
- 0897-4756
- Abstract
- We report on the structural transformation of organic copper phthalocyanine (CuPc) nanowires to hollowed rectangular nanotubes through the use of a hydrothermal process. The CuPc molecules have been chemically self-assembled into a form of nanowires, through reaction with trifluoroacetic acid. The mechanism of the chemical self-assembly for the CuPc nanowires is studied through analyzing the Fourier transform infrared spectra. After the hydrothermal process, it is observed that the alpha-phase CuPc nanowires are transformed to beta-phase CuPc rectangular nanotubes, with crystallinity in the (-101) direction. From X-ray diffraction patterns, the crystallinity of the CuPc nanowires is enhanced by annealing. The optical and electrical characteristics of the beta-phase crystalline CuPc rectangular nanotubes are compared with those of alpha-phase CuPc nanowires, using ultraviolet and visible absorption spectra and current voltage (I-V) characteristics. From the gate field-dependent I-V characteristics for a single nanowire/nanotube transistor, improved device performance in terms of the charge carrier mobility and the current on and off ratio have been observed in the beta-phase CuPc crystalline rectangular nanotube compared with the self-assembled alpha-phase CuPc nanowire, because of the relatively strong pi-pi interaction between the CuPc molecules.
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