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All-carbon nanotube diode and solar cell statistically formed from macroscopic network

Nano Research 2015年第9期8卷 2800-2809页

作者： Albert G. Nasibulin Adinath M. Funde ilya v. anoshkin Igor A. Lev.tskyt kolkov. Institute of Science and Technology 100 Novaya str Skolkovo Moscow Region 143025 Russia Department of Material Science Saint-Petersburg State Polytechnical University Polytechnicheskaya 29 Saint-Petersburg 195251 Russia Department of Applied Physics Aalto University School of Science Puumiehenkuja 2 Espoo 00075 Finland School of Energy Studies Savitribai Phule Pune University Ganeshkhind Pune-411007 India Department of Chemistry University of Rhode Island R102881 USA Emitech Inc. Fall River MA 02720 USA

Schottky diodes and solar cells are statistically created in the contact area between two macroscopic films of single-walled carbon nanotubes （SWNTs） at the junction of semiconducting and quasi-metallic bundles consisting of sev.ral high quality tubes. The n-doping of one of the films allows for photov.ltaic action, owing to an increase in the built-in potential at the bundle-to-bundle interface. Statistical analysis demonstrates that the Schottky barrier dev.ce contributes significantly to the I-v.characteristics, compared to the p-n diode. The upper limit of photov.ltaic conv.rsion efficiency has been estimated at N20%, demonstrating that the light energy conv.rsion is v.ry efficient for such a unique solar cell. While there hav. been multiple studies on rectifying SWNT diodes in the nanoscale env.ronment, this is the first report of a macroscopic all-carbon nanotube diode and solar cell.

关键词： all-carbon nanotube solarcell Schottky diode,carbon nanotube diode,carbon nanotube bundles

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Giga- and terahertz-range nanoemitter based on peapod structure

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Nano Research 2015年第8期8卷 2595-2602页

作者： Michail M. Slepchenkov.Anna S. Kolesnikov. George v. Sav.styanov. Igor S. Nefedov.ilya v. anoshkin Albert G. Nasibulin Olga E. Glukhov. Department of Physics Saratov State University Saratov 410012 Russia Department of Radio Science and Engineering Aalto University Aalto P.O. Box 13000 Finland kolkov. Institute of Science and Technology Skolkovo 143025 Russia

We propose a theoretical model of a nanoemitter for giga- and terahertz-range wav.s. The model is based on a peapod structure comprising a carbon nanotube with chiral indices （10, 10）. Three encapsulated and partially polymerized fuUerene C60 molecules and a positiv.ly charged C60 fullerene are trapped inside the nanotube. The motion of the charged fullerene and the radiation frequency were controlled using an external electric field. Stable terahertz radiation at a frequency of 0.36 THz was produced at 300 K with an external electrical field of 10 v.μm. Stable radiation in the gigahertz range was observ.d at 50 K with an electric field below 10 v.m. A theoretical simulation was performed using the tight-binding molecular dynamics method with a description of the v.n der Waals interaction by the Morse potential. The system described by the theoretical model was experimentally observ.d.

关键词： fullerenes nanotubes electronics simulations molecular modeling

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New Hybrid Copper Composite Materials Based on Carbon Nanostructures

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材料科学与工程（中英文B版） 2012年第4期2卷 240-246页

作者： Tatyana S. Koltsov. Larisa I. Nasibulina ilya v. anoshkin v.sily v. Mishin Esko I. Kauppinen Oleg v.Tolochko Albert G. Nasibulin Material Science Faculty Saint-Petersburg State Polytechnical University Polytechnicheskaya 29 195251 Saint-PetersburgRussia NanoMaterials Group Department of Applied Physics Aalto University School of Science and Technology P.O. Box 15100Puumiehenkuja 2 FIN-02150 Espoo Finland

A few-layered graphene was synthesized on the surface of micron-sized copper powder by chemical v.por deposition technique using ethylene as a carbon source in the temperature range from 700 to 940 °C. As a result, we synthesized graphene with 8-12 layers on the surface of copper particles and examined the effect of this material on the mechanical properties of the compacted materials. The copper/graphene composite showed 39% increase in the hardness compared to pure copper. The improv.ments of 10% and 70% were obtained for the copper composites materials based on graphite and cartbon nanofibers, respectiv.ly.

关键词：铜复合材料碳纳米结构石墨复合材料化学气相沉积技术混合颗粒表面温度范围力学性能

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