Alignment of the dye's molecular levels with the TiO2 band edges in dye-sensitized solar cells: a DFT-TDDFT study (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Alignment of the dye's molecular levels with the TiO2 band edges in dye-sensitized solar cells: a DFT-TDDFT study (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Alternative label

• De Angelis, F.; Fantacci, S.; Selloni, A. (2008)
  Alignment of the dye's molecular levels with the TiO2 band edges in dye-sensitized solar cells: a DFT-TDDFT study
  in Nanotechnology (Bristol. Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• De Angelis, F.; Fantacci, S.; Selloni, A. (literal)

Pagina inizio

• 424002 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 19 (literal)

Rivista

• Nanotechnology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• DOI: 10.1088/0957-4484/19/42/424002 (literal)

Note

• ISI Web of Science (WOS) (literal)

Titolo

• Alignment of the dye's molecular levels with the TiO2 band edges in dye-sensitized solar cells: a DFT-TDDFT study (literal)

Abstract

• We present a theoretical study of the lineup of the LUMO of Ru(II)-polypyridyl (N3 and N719) molecular dyes with the conduction band edge of a TiO2 anatase nanoparticle. We use density functional theory (DFT) and the Car-Parrinello scheme for efficient optimization of the dye-nanoparticle systems, followed by hybrid B3LYP functional calculations of the electronic structure and time-dependent DFT (TDDFT) determination of the lowest vertical excitation energies. The electronic structure and TDDFT calculations are performed in water solution, using a continuum model. Various approximate procedures to compute the excited state oxidation potential of dye sensitizers are discussed. Our calculations show that the level alignment for the interacting nanoparticle-sensitizer system is very similar, within about 0.1 eV, to that for the separated TiO2 and dye. The excellent agreement of our results with available experimental data indicates that the approach of this work could be used as an efficient predictive tool to help the optimization of dye-sensitized solar cells. (literal)

Prodotto di

• Proprietà ottiche lineari e non-lineari di materiali nanostrutturati (PM.P07.003.002) (Modulo)
• Proprietà ottiche lineari e non-lineari di sistemi complessi e materiali (PM.P07.003.005) (Modulo)
• Istituto di scienze e tecnologie molecolari (ISTM) (Istituto)

Autore CNR

• SIMONA FANTACCI (Persona)
• FILIPPO DE ANGELIS (Persona)

Incoming links:

Prodotto

• Istituto di scienze e tecnologie molecolari (ISTM) (Istituto)
• Proprietà ottiche lineari e non-lineari di sistemi complessi e materiali (PM.P07.003.005) (Modulo)
• Proprietà ottiche lineari e non-lineari di materiali nanostrutturati (PM.P07.003.002) (Modulo)

Autore CNR di

• FILIPPO DE ANGELIS (Persona)
• SIMONA FANTACCI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nanotechnology (Rivista)