Mesoporous titania-vertical nanorod films with interfacial engineering for high performance dye-sensitized solar cells.
Nanotechnology
; 26(10): 105401, 2015 Mar 13.
Article
em En
| MEDLINE
| ID: mdl-25687409
ABSTRACT
Working electrode (WE) fabrication offers significant challenges in terms of achieving high-efficiency dye-sensitized solar cells (DSCs). We have combined the beneficial effects of vertical nanorods grown on conducting glass substrate for charge transport and mesoporous particles for dye loading and have achieved a high photoconversion efficiency of (η) > 11% with an internal quantum efficiency of â¼93% in electrode films of thickness â¼7 ± 0.5 µm. Controlling the interface between the vertical nanorods and the mesoporous film is a crucial step in attaining high η. We identify three parameters, viz., large surface area of nanoparticles, increased light scattering of the nanorod-nanoparticle layer, and superior charge transport of nanorods, that simultaneously contribute to the improved photovoltaic performance of the WE developed.
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MEDLINE
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En
Ano de publicação:
2015
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Article