Giant thermoelectric effect in graphene

The paper predicts a giant thermoelectric coefficient in a nanostructure consisting of metallic electrodes periodically patterned over graphene, which is deposited on a silicon dioxide substrate. The Seebeck coefficient in this device attains 30mV∕K, this value being among the largest reported ever. The calculations are based on a transfer matrix approach that takes a particular form for graphene-based devices. The results are important for future nanogenerators with applications in the area of sensors, energy harvesting, and scavenging.

[1]  Hideo Hosono,et al.  Giant thermoelectric Seebeck coefficient of a two-dimensional electron gas in SrTiO3. , 2007, Nature materials.

[2]  M. Dresselhaus,et al.  New Directions for Low‐Dimensional Thermoelectric Materials , 2007 .

[3]  Andre K. Geim,et al.  The rise of graphene. , 2007, Nature materials.

[4]  Ali Shakouri,et al.  Demonstration of electron filtering to increase the Seebeck coefficient in In0.53Ga0.47As/In0.53Ga0.28Al0.19As superlattices , 2006 .

[5]  Mircea Dragoman,et al.  Quantum-Classical Analogies , 2004 .

[6]  M. I. Katsnelson,et al.  Chiral tunnelling and the Klein paradox in graphene , 2006 .

[7]  Joseph A. Paradiso,et al.  Energy scavenging for mobile and wireless electronics , 2005, IEEE Pervasive Computing.

[8]  Peter C. Eklund,et al.  Carbon nanotubes: A thermoelectric nano-nose , 2001 .

[9]  H. Linke,et al.  Concept study for a high-efficiency nanowire based thermoelectric , 2006 .

[10]  T. Savage,et al.  Thermal Properties of Nanomaterials and Nanocomposites , 2004 .

[11]  Modulation of thermoelectric power of individual carbon nanotubes. , 2003, Physical review letters.

[12]  Aachen,et al.  A Graphene Field-Effect Device , 2007, IEEE Electron Device Letters.

[13]  Enrique Maciá,et al.  DNA-based thermoelectric devices: A theoretical prospective , 2007 .

[14]  M. Dragoman,et al.  Negative differential resistance of electrons in graphene barrier , 2007, quant-ph/0701011.

[15]  S. Datta,et al.  Thermoelectric effect in molecular electronics , 2003, cond-mat/0301232.

[16]  Li Shi,et al.  Mesoscopic thermal and thermoelectric measurements of individual carbon nanotubes , 2003 .