1. Mechanism of Charge Transport in Cobalt and Iron Phthalocyanine Thin Films Grown by Molecular Beam Epitaxy.
- Author
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Kumar, Arvind, Samanta, Soumen, Singh, Ajay, Debnath, A. K., Aswal, D. K., and Gupta, S. K.
- Subjects
CHARGE transfer ,PHTHALOCYANINES ,ORGANOMETALLIC compounds ,THIN films ,MOLECULAR beam epitaxy ,CRYSTAL growth ,GRAZING incidence ,X-ray diffraction ,METALLIC composites ,METAL-insulator transitions - Abstract
Cobalt phthalocyanine (CoPc), iron phthalocyanine (FePc) and their composite (CoPc-FePc) films have been grown by molecular beam epitaxy (MBE). Grazing incidence X-ray diffraction (GIXRD) and scanning electron microscope (SEM) studies showed that composite films has better structural ordering compared to individual CoPc and FePc films. The temperature dependence of resistivity (in the temperature range 25 K- 100 K) showed that composite films are metallic, while individual CoPc and FePc films are in the critical regime of metal-to-insulator (M-I) transition The composite films show very high mobility of 110 cm
2 V-1 s-1 at room temperature i.e. nearly two order of magnitude higher compared to pure CoPc and FePc films. [ABSTRACT FROM AUTHOR]- Published
- 2011
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