A convenient route to high area, nanoparticulate TiO2 photoelectrodes suitable for high-efficiency energy conversion in dye-sensitized solar cells

Nak Cheon Jeong; Omar K. Farha; Joseph T. Hupp

doi:10.1021/la104297s

A convenient route to high area, nanoparticulate TiO₂ photoelectrodes suitable for high-efficiency energy conversion in dye-sensitized solar cells

Nak Cheon Jeong, Omar K. Farha, Joseph T. Hupp

Northwestern University

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Ethanol-soluble amphiphilic TiO₂ nanoparticles (NPs) of average diameter ∼9 nm were synthesized, and an α-terpineol-based TiO ₂ paste was readily prepared from them in comparatively few steps. When used for fabrication of photoelectrodes for dye-sensitized solar cells (DSSCs), the paste yielded highly transparent films and possessing greater-than-typical, thickness-normalized surface areas. These film properties enabled the corresponding DSSCs to produce high photocurrent densities (17.7 mA cm^-2) and a comparatively high overall light-to-electrical energy conversion efficiency (9.6%) when deployed with the well-known ruthenium-based molecular dye, N719. These efficiencies are about ∼1.4 times greater than those obtained from DSSCs containing photoelectrodes derived from a standard commercial source of TiO₂ paste.

Original language	English
Pages (from-to)	1996-1999
Number of pages	4
Journal	Langmuir
Volume	27
Issue number	5
DOIs	https://doi.org/10.1021/la104297s
Publication status	Published - Mar 1 2011

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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abstract = "Ethanol-soluble amphiphilic TiO2 nanoparticles (NPs) of average diameter ∼9 nm were synthesized, and an α-terpineol-based TiO 2 paste was readily prepared from them in comparatively few steps. When used for fabrication of photoelectrodes for dye-sensitized solar cells (DSSCs), the paste yielded highly transparent films and possessing greater-than-typical, thickness-normalized surface areas. These film properties enabled the corresponding DSSCs to produce high photocurrent densities (17.7 mA cm-2) and a comparatively high overall light-to-electrical energy conversion efficiency (9.6%) when deployed with the well-known ruthenium-based molecular dye, N719. These efficiencies are about ∼1.4 times greater than those obtained from DSSCs containing photoelectrodes derived from a standard commercial source of TiO2 paste.",

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