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Electrical properties of 3D-polymeric crystalline and disordered C60 and C70 fullerites.
Umeå University, Faculty of Science and Technology, Physics.
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2005 (English)In: Diamond and Related Materials vol. 14, special Issue (3-7): Proceedings of Diamond'04, 15th European Conference on Diamond and Diamond-Like Materials, Riva del Garda, Italy 2004., Elsevier B.V. , 2005, 896-901 p.Conference paper (Refereed)
Abstract [en]

Crystalline and disordered 3D-polymeric C60 and C70 with different lattice parameters and with densities in the range of 2.2÷3.25 g cm−1 were obtained by high-pressure-high-temperature treatment at P=11.5÷15 GPa, T=670÷1800 K. Their d.c. electrical conductivity was investigated at temperatures 30÷350 K. The variable range hopping mechanism dominates in all samples up to room temperature. A temperature activated conductivity via delocalized states was observed at T>160÷260 K in crystalline C60 samples and in some samples with disordered structure. The evaluated band gap value is Eg=0.28÷0.54 eV for different crystalline structures and 0.06÷0.25 eV for disordered ones

Place, publisher, year, edition, pages
Elsevier B.V. , 2005. 896-901 p.
, Diamond and Related Materials, ISSN 0925-9635 ; 14
Keyword [en]
Fullerenes, fullerene polymers, C60, C70, lattice parameters, high pressure, high temperature, synthesis, electrical conductivity, resistivity, resistance, electrical transport, variable range hopping, band gap
National Category
Condensed Matter Physics
URN: urn:nbn:se:umu:diva-11871DOI: doi:10.1016/j.diamond.2005.01.018OAI: diva2:151542
Available from: 2008-01-29 Created: 2008-01-29Bibliographically approved

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Dzwilewski, AndrzejMakarova, TatianaSundqvist, Bertil
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