We hereby propose a non-expensive method for the deposition of pure and Al-doped hematite photoanodes in the configuration of thin films for the application of dye-sensitized solar cells (DSSC). The electrodes have been prepared from hematite nanoparticles that were obtained by thermal degradation of a chemical precursor. The particles have been used in the preparation of a paste, suitable for both screen printing and doctor blade deposition. The paste was then spread on fluorine-doped tin oxide (FTO) to obtain porous hematite electrodes. The electrodes have been sensitized using N3 and D5 dyes and were characterized through current/voltage curves under simulated sun light (1 sun, AM 1.5) with a Pt counter electrode. Al-doping of hematite showed interesting changes in the physical and electrochemical characteristics of sensitized photoanodes since we could notice the growth of AlFe2O4 (hercynite) as a secondary crystal phase into the oxides obtained by firing the mixtures of two chemical precursors at different molar ratios. Pure and Al-doped hematite electrodes have been used in a complete n-type DSSCs. The kinetics of charge transfer through the interface dye/electrolyte was studied and compared to that of a typical p-type DSSC based on NiO photocathodes sensitized with erythrosine B. The results suggest a potential application of both Fe2O3 and Fe2O3/AlFe2O4 as photoanodes of a tandem DSSC. © 2016, Springer Science+Business Media Dordrecht.

Pristine and Al-doped hematite printed films as photoanodes of p-type dye-sensitized solar cells / Congiu, Mirko; De Marco, Maria L.; Bonomo, Matteo; Nunes-Neto, Oswaldo; Dini, Danilo; Graeff, Carlos F. O.. - In: JOURNAL OF NANOPARTICLE RESEARCH. - ISSN 1388-0764. - ELETTRONICO. - 19:1(2017). [10.1007/s11051-016-3707-4]

Pristine and Al-doped hematite printed films as photoanodes of p-type dye-sensitized solar cells

Bonomo, Matteo;Dini, Danilo;
2017

Abstract

We hereby propose a non-expensive method for the deposition of pure and Al-doped hematite photoanodes in the configuration of thin films for the application of dye-sensitized solar cells (DSSC). The electrodes have been prepared from hematite nanoparticles that were obtained by thermal degradation of a chemical precursor. The particles have been used in the preparation of a paste, suitable for both screen printing and doctor blade deposition. The paste was then spread on fluorine-doped tin oxide (FTO) to obtain porous hematite electrodes. The electrodes have been sensitized using N3 and D5 dyes and were characterized through current/voltage curves under simulated sun light (1 sun, AM 1.5) with a Pt counter electrode. Al-doping of hematite showed interesting changes in the physical and electrochemical characteristics of sensitized photoanodes since we could notice the growth of AlFe2O4 (hercynite) as a secondary crystal phase into the oxides obtained by firing the mixtures of two chemical precursors at different molar ratios. Pure and Al-doped hematite electrodes have been used in a complete n-type DSSCs. The kinetics of charge transfer through the interface dye/electrolyte was studied and compared to that of a typical p-type DSSC based on NiO photocathodes sensitized with erythrosine B. The results suggest a potential application of both Fe2O3 and Fe2O3/AlFe2O4 as photoanodes of a tandem DSSC. © 2016, Springer Science+Business Media Dordrecht.
2017
hematite; al-doped; dye solar cell; hercynite; tandemsolar cell; energy conversion
01 Pubblicazione su rivista::01a Articolo in rivista
Pristine and Al-doped hematite printed films as photoanodes of p-type dye-sensitized solar cells / Congiu, Mirko; De Marco, Maria L.; Bonomo, Matteo; Nunes-Neto, Oswaldo; Dini, Danilo; Graeff, Carlos F. O.. - In: JOURNAL OF NANOPARTICLE RESEARCH. - ISSN 1388-0764. - ELETTRONICO. - 19:1(2017). [10.1007/s11051-016-3707-4]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/923629
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