Squaraine compounds are currently investigated as high performance active components in both organic and hybrid photovoltaic devices as well as in photodetectors. Their most valuable features include a particularly efficient optical absorption in the Vis-NIR region, high polarizability, and a remarkable chemical stability. Their full exploitation is somewhat limited by a negligible absorption in the UV-Vis region (prototypical squaraines basically do not absorb below 500 nm). The aim of the present paper is the design and synthesis of truly panchromatic squaraines to be effectively employed as the photoactive materials in Vis operating optoelectronic devices. Our strategy involves the design of squaraines that are both nonsymmetric and core-substituted with suitable electron-withdrawing groups. We show the effect of such a design strategy by means of UV-Vis spectroscopy, cyclic voltammetry and prototypical device performances rationalization. © The Royal Society of Chemistry 2012.

Beverina, L., Ruffo, R., Salamone, M., Ronchi, E., Binda, M., Natali, D., et al. (2012). Panchromatic squaraine compounds for broad band light harvesting electronic devices. JOURNAL OF MATERIALS CHEMISTRY, 22(14), 6704-6710 [10.1039/c2jm16240g].

Panchromatic squaraine compounds for broad band light harvesting electronic devices

BEVERINA, LUCA;RUFFO, RICCARDO;SALAMONE, MATTEO MARCO;RONCHI, ELISABETTA;
2012

Abstract

Squaraine compounds are currently investigated as high performance active components in both organic and hybrid photovoltaic devices as well as in photodetectors. Their most valuable features include a particularly efficient optical absorption in the Vis-NIR region, high polarizability, and a remarkable chemical stability. Their full exploitation is somewhat limited by a negligible absorption in the UV-Vis region (prototypical squaraines basically do not absorb below 500 nm). The aim of the present paper is the design and synthesis of truly panchromatic squaraines to be effectively employed as the photoactive materials in Vis operating optoelectronic devices. Our strategy involves the design of squaraines that are both nonsymmetric and core-substituted with suitable electron-withdrawing groups. We show the effect of such a design strategy by means of UV-Vis spectroscopy, cyclic voltammetry and prototypical device performances rationalization. © The Royal Society of Chemistry 2012.
Articolo in rivista - Articolo scientifico
Squaraine compounds, organic and hybrid photovoltaic devices
English
2012
22
14
6704
6710
none
Beverina, L., Ruffo, R., Salamone, M., Ronchi, E., Binda, M., Natali, D., et al. (2012). Panchromatic squaraine compounds for broad band light harvesting electronic devices. JOURNAL OF MATERIALS CHEMISTRY, 22(14), 6704-6710 [10.1039/c2jm16240g].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/37256
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