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Celle Solari Fotosensibilizzate: Comprendere il meccanismo, migliorare l’efficienza. Filippo De Angelis Istituto CNR di Scienze e Tecnologie Molecolari (ISTM), c/o Dipartimento di Chimica, Università di Perugia, I-06123 Perugia, Italy. The problem is to gather solar light at an effective cost!.

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Celle Solari Fotosensibilizzate: Comprendere il meccanismo, migliorare l’efficienza


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slide1

Celle Solari Fotosensibilizzate:Comprendere il meccanismo, migliorare l’efficienza

  • Filippo De Angelis
  • Istituto CNR di Scienze e Tecnologie Molecolari (ISTM), c/o Dipartimento di Chimica, Università di Perugia, I-06123 Perugia, Italy
slide2

The problem is to gather solar light at an effective cost!

Solar Emission

CONDUCTION

1100 nm

1.12 eV

SILICON

TiO2

VALENCE

CONDUCTION

SILICON

380 nm

3.20 eV

TiO2

300 Wavelength (nm) 2500

4.13 Energy (eV) 0.50

VALENCE

slide3

(N3-N34-)‏

Acidic COOH groups

Dye-sensitized solar cells: =11.3 %

Ru(II)-polypyridyl sensitizers on TiO2

iph  rate of electron injection

Voc  position of the conduction band

=iph Voc ff / Is

O’Regan, B.; Grätzel, M. Nature, 1991, 353, 737 ; M. Grätzel, Nature, 2001, 414, 338.

slide4

Dye-Sensitized Solar Cells: Flexible, colorful, transparent PVs

ERG, Permasteelisa, Dyesol IT, Tozzi Renewable Energy, Targetti Sankey, Colorobbia

slide5

3 KEYNOTE SPEAKERS

  • Michael Grätzel

James Durrant

Arthur J. Nozik

14 INVITED SPEAKERS

64 ORAL PRESENTATIONS

30 COUNTRIES

260 PARTICIPANTS

slide6

Absorption spectrum of N719 in water:

Exp.

Theor.

*

HOMO-3

HOMO

LUMO

Intensity (arb. units)‏

MLCT (II)‏

MLCT (I)‏

Energy (eV)‏

S. Fantacci, F. De Angelis, A. SelloniJ. Am. Chem. Soc. 2003, 125, 4381.

F. De Angelis, S. Fantacci, A. SelloniChem. Phys. Lett. 2004, 389, 204.

F. De Angelis, S. Fantacci, M.K. Nazeeruddin Chem. Phys. Lett. 2005, 415, 115.

F. De Angelis,. S. Fantacci, M. Grätzel et al. J. Am. Chem. Soc. 2005, 127, 16835.

slide7

Modeling of TiO2 nanoparticles:

Stoichiometric anatase (TiO2)38 and (TiO2)82 clusters of 1 and 2 nm dimensions exposing (101) surfaces

20.5 Å

18.5 Å

Ti82O164

B3LYP/3-21g* B3LYP/DZVP TD-DFT gap in water 3.20/3.41 eV 3.13/3.35 eV

Experimental gap in acqueous solutions: 3.20 – 3.30 eV

F. De Angelis, A. Tilocca, A. Selloni J. Am. Chem. Soc. 2004, 126, 15024

slide8

Alignment of excited state potentials:

F. De Angelis, S. Fantacci, A. Selloni, Nanotechnology, 2008, 19, 424002.

slide9

Charge generation and injection mechanisms:

N3 + hν

N3*

N3+ + 1 e -

1 e -

F. De Angelis, S. Fantacci, A. Selloni, M. GrätzelJ. Am. Chem. Soc.2007, 129, 10320.

slide10

From Design to Prototypes:

The TECNO-SOLART spin-off

Regione dell’Umbria

Comune di Perugia

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Approved Projects:

 MIUR PRIN 2008 ongoing

 IIT-SEED 2009 ongoing

  • Dyesol 2009 ongoing
  • ESF 2009 ongoing
  • EU-FP7: ENERGY-2009-India2010
  • EU-FP7: NMP-2009 2010
  • PON 2010 (Tozzi Renable Energy)
  • Cariplo 2010 (Fondazione Cariplo)
  • MATTM 2010 (Targetti Sankey/Daunia Solar Cells)

Submitted Projects: