Organic/inorganic nanocomposites for high-dielectric-constant materials

作者: Galileo Sarasqueta , Kaushik Roy Choudhury , Do Young Kim , Franky So

DOI: 10.1063/1.2963193

关键词: High-κ dielectricConductivityNanocompositeComposite materialMaterials scienceVacuum depositionCapacitorAnnealing (metallurgy)DielectricPermittivity

摘要: A different approach to fabricate metallic nanostructures in an insulating organic matrix situ using thermal coevaporation is demonstrated. The method used metal-organic percolative nanocomposite capacitors. Thermal annealing of the films results a dramatic enhancement (>50 times at 10kHz) dielectric constant accompanied by significant lowering (approximately four times) conductivity and dissipation loss, especially low frequencies. improved performance attributed structural modifications resulting from enhanced phase segregation constituents, induced optimized temperatures.

参考文章(23)
Luigi Nicolais, Gianfranco Carotenuto, Metal-Polymer Nanocomposites Metal-Polymer Nanocomposites. pp. 320- ,(2004)
Ward A. Lopes, Heinrich M. Jaeger, Hierarchical self-assembly of metal nanostructures on diblock copolymer scaffolds Nature. ,vol. 414, pp. 735- 738 ,(2001) , 10.1038/414735A
R. Ravindran, K. Gangopadhyay, S. Gangopadhyay, N. Mehta, N. Biswas, Permittivity enhancement of aluminum oxide thin films with the addition of silver nanoparticles Applied Physics Letters. ,vol. 89, pp. 263511- ,(2006) , 10.1063/1.2425010
A. L. Efros, B. I. Shklovskii, Critical Behaviour of Conductivity and Dielectric Constant near the Metal-Non-Metal Transition Threshold Physica Status Solidi B-basic Solid State Physics. ,vol. 76, pp. 475- 485 ,(1976) , 10.1002/PSSB.2220760205
Cheng Huang, Q. M. Zhang, Gal deBotton, Kaushik Bhattacharya, All-organic dielectric-percolative three-component composite materials with high electromechanical response Applied Physics Letters. ,vol. 84, pp. 4391- 4393 ,(2004) , 10.1063/1.1757632
T. Kempa, D. Carnahan, M. Olek, M. Correa, M. Giersig, M. Cross, G. Benham, M. Sennett, Z. Ren, K. Kempa, Dielectric media based on isolated metallic nanostructures Journal of Applied Physics. ,vol. 98, pp. 034310- ,(2005) , 10.1063/1.1996836
Z.-M. Dang, Y. Shen, C.-W. Nan, Dielectric behavior of three-phase percolative Ni–BaTiO3/polyvinylidene fluoride composites Applied Physics Letters. ,vol. 81, pp. 4814- 4816 ,(2002) , 10.1063/1.1529085
Z.-M. Dang, Y.-H. Lin, C.-W. Nan, Novel Ferroelectric Polymer Composites with High Dielectric Constants Advanced Materials. ,vol. 15, pp. 1625- 1629 ,(2003) , 10.1002/ADMA.200304911
Y. Shen, Y. Lin, M. Li, C.-W. Nan, High Dielectric Performance of Polymer Composite Films Induced by a Percolating Interparticle Barrier Layer Advanced Materials. ,vol. 19, pp. 1418- 1422 ,(2007) , 10.1002/ADMA.200602097
K. Kempa, Dielectric function of media based on conductive particles Physical Review B. ,vol. 74, pp. 033411- ,(2006) , 10.1103/PHYSREVB.74.033411