Dye-sensitized solar cells using ethynyl-linked porphyrin trimers.
Phys Chem Chem Phys
; 16(10): 4551-60, 2014 Mar 14.
Article
en En
| MEDLINE
| ID: mdl-24458237
Toward the extension of the light-harvesting region of sensitizers in dye-sensitized solar cells (DSSCs), two ethynyl-linked porphyrin trimers were synthesized and investigated. The zincfreebasezinc trimer (ZnFbAZn) showed an absorption maximum at a longer wavelength than the all-zinc trimer (ZnZnAZn), although the energy level of ZnFbAZn was lower than that of ZnZnAZn. The DSSCs using these trimers showed spectral sensitivities up to 900 nm. Reflecting the energy levels of these trimers, the DSSC using ZnZnAZn showed better performance than that using ZnFbAZn. After the optimization of cell fabrication conditions, the photoelectric conversion efficiency η of the DSSC using ZnZnAZn reached 3.17%. The larger TiO2 nanoparticles (ca. 37 nm) than the conventional cases (ca. 13 nm) were found to be preferable in this case, due to high molar extinction coefficients of the porphyrin trimers.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Chem Chem Phys
Asunto de la revista:
BIOFISICA
/
QUIMICA
Año:
2014
Tipo del documento:
Article
Pais de publicación:
Reino Unido