Abstract

The introduction of alkoxy chains in the molecular architecture of meso push-pull porphyrins is of paramount importance aiming at high performing dye-sensitized solar cells (DSSCs) based on these specific sensitizers. Recently, we have demonstrated that the same approach is fruitful even if it is applied to tetraarylporphyrins with an acceptor/anchoring substituent in the [small beta]-pyrrolic position. In particular, among the ortho-ortho, the ortho-para and the ortho-functionalization of the aryl rings with an octyloxy chain, we identified the latter as the most performing in the series, showing a good balance between the dye loading and the reduction of [small pi]-[small pi] aggregation. Herein, focusing our attention on the mono-ortho-functionalized molecular structure, we have investigated the effect of the alkoxy chain length and nature on the reduction of dye-to-dye aggregation as well as on the enhancement of light harvesting capabilities, finding an almost linear relationship between the device photon conversion efficiency (PCE) and the alkoxy chain length both in the presence and in the absence of a co-disaggregating agent.

Autore Pugliese

• Listorti Andrea

Tutti gli autori

• Magnano G. , Marinotto D. , Cipolla M. P. , Trifiletti V. , Listorti A. , Mussini P. R. , Di Carlo G. , Tessore F. , Manca M. , Orbelli Biroli A. , Pizzotti M.

Titolo volume/Rivista

PHYSICAL CHEMISTRY CHEMICAL PHYSICS

Anno di pubblicazione

2016

ISSN

1463-9076

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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