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Carbon-nanotube-based terahertz-to-optics rectenna

Objective

"The efficiency of traditional semiconductor solar cells is subject to a fundamental limitation, known as the Shockley-Queisser recombination limit, and is found to be near 30 per cent. The invention in the early eighties of solar cell rectifying antennas (rectennas) - a combination of an optical antenna and a rectifying diode to efficiently absorb the incident solar radiation and directly convert the ac field across the antenna into the dc power - provides a way to overcome the limitation. The recent rapid technological progress in the design of different nano-dimensional structures gives rise to a new promising possibility in designing nanorectennas. A solar cell will incorporate a large array of such elements, which provide high conversion efficiency and can be produced cheaply in a roll-to-roll process. However, a practical realization of such devices requires precise theoretical modelling and experimental study to provide optimization of the antenna and nanocontact configuration. The project focuses on the physics and theoretical modelling of the nanorectenna performance. The rectification effect comes from the photo-assisted charge carrier tunneling through the nanotube energy gap. For the efficiency enhancement we propose using the coherent effect of the photon dressing of electron-hole pairs. Theoretical modelling will be carried out on the basis of the Landauer- Büttiker formalism extended to the case of photon-dressed electrons. The fundamental thermodynamic limitation of the rectenna efficiency and the prospective applications of the device will be studied. This multidisciplinary and challenging project relies on the complementary expertise of the consortium teams and is based on an original approach - nanoelectromagnetics – combining the electrodynamics of mesoscopic inhomogeneous media and quantum transport theory of charge carriers in structures with reduced dimensionality."

Field of science

  • /natural sciences/physical sciences/electromagnetism and electronics/electrical conductivity/semiconductor
  • /social sciences/social and economic geography/transport
  • /natural sciences/earth and related environmental sciences/atmospheric sciences/meteorology/solar radiation

Call for proposal

FP7-PEOPLE-2013-IRSES
See other projects for this call

Funding Scheme

MC-IRSES - International research staff exchange scheme (IRSES)

Coordinator

THE UNIVERSITY OF EXETER
Address
The Queen's Drive Northcote House
EX4 4QJ Exeter
United Kingdom
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 45 600
Administrative Contact
Sarah Hill (Ms.)

Participants (1)

TEL AVIV UNIVERSITY
Israel
EU contribution
€ 45 600
Address
Ramat Aviv
69978 Tel Aviv
Activity type
Higher or Secondary Education Establishments
Administrative Contact
Lea Pais (Ms.)