1 / 6

Nanowire solar cells

Research Highlights 2001-2010 – N. Pelekanos. PhD 1991: Brown Univ. (USA) Post-docs: CEA/Grenoble, CNET Lannion , Max-Planck Stuttgart 1994-2001: CEA/Grenoble 2001-2010: FORTH & Univ. of Crete. Novel optoelectronic devices - GaAs. Nitrides:

emmly
Download Presentation

Nanowire solar cells

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Research Highlights 2001-2010 – N. Pelekanos PhD 1991: Brown Univ. (USA) Post-docs: CEA/Grenoble, CNET Lannion, Max-Planck Stuttgart 1994-2001: CEA/Grenoble 2001-2010: FORTH & Univ. of Crete Novel optoelectronic devices - GaAs Nitrides: Towards improved optoelectronic devices Nanowire solar cells Piezoelectric quantum dots: InAs (GaN) Funding: EC, ΓΓΕΤ, ΥΠΕΠΘ,..., 2,9 million Euros FORTHMicroelectronics Research GroupUniv. of Crete

  2. Nitrides: Highlights Eliminate internal fields for better blue lasers Superior p-type contacts Integrated HEMT on LED Polarization engineering on InAlGaN/GaN quantum wells can give zero-field nitride optoelectronic devices. But, the optoelectronic quality of InAlGaN has to be further improved. Cr/Au vs Ni/Au LED fabrication IST QN-Laser, IST QN-Laser II G. Dialynas et al. JAP 2008 F. Kalaitzakis, APL 2007 NMP GaNano

  3. Novel optoelectronic devices: Highlights B1 B2 Polariton LEDs and Lasers CB Tunable laser diodes Piezoelectric laser diodes p-side VB Jth(111) < Jth(100) T=235K -S. Tsintzos,Nature 2008 -RT operation, S. Tsintzos, APL 2009. G. Deligeorgis, APL 2007 IST Tune-laser APL 2002, APL 2003 20nm tuning at low T, 5nm tuning at 300K

  4. e h V Piezoelectric quantum dots: Highlights InAs (211)B QDs + + + + + + + + + + + - - - - - - - - - - - - - InAs QDs Reference QW G. Dialynas, JAP 2010 G. Dialynas, to be submitted

  5. Piezoelectric quantum dots: Highlights Very small FSS. Promising for sources of entangled photons Single dot spectroscopy Single photon emission; possibility for high-T operation Anti-binding biexciton energy S. Germanis, APL 2011

  6. Project: III-V Nanowires for high efficiency Solar cells Solar Innovation 2010 Award by Commissariat a l’ Energie Atomique 3 year project • Why Nanowires for Solar Cells? • Potential for lower cost and high efficiency: • - enhanced light absorption, • less material utilization • - no need for lattice matching, • easier choice of substrate & • more freedom in heterostructure design • - direct path for charge transport “nanowire solar cells”

More Related