Abstract
Highly-ordered TiO{sub 2} nanotube arrays are made by potentiostatic anodization of a titanium film in a fluoride containing electrolyte. Here we describe the application of this unique material architecture in both front-side and back-side illuminated dye-sensitized solar cells (DSSCs). The back-side illuminated solar cells are based on the use of 6.2 {mu}m long (110 nm pore diameter, 20 nm wall thickness) highly-ordered nanotube-array films made by anodization of a 250 {mu}m thick Ti foil in a KF electrolyte. Front-side illuminated solar cells use a negative electrode composed of optically transparent nanotube arrays, approximately 3600 nm in length (46 nm pore diameter, 17 nm wall thickness), grown on a fluorine doped tin oxide coated glass substrate by anodic oxidation of a previously deposited RF-sputtered titanium thin film in a HF electrolyte. After crystallization by oxygen annealling the nanotube-arrays are treated with TiCl{sub 4} to enhance photocurrent amplitudes. The arrays are then sensitized by a self-assembled monolayer of bis(tetrabutylammonium)-cis-(dithiocyanato)-N, N'- bis(4-carboxylato-4'-carboxylic acid-2, 2'-bipyridine)ruthenium(II) (commonly called 'N719'). Superior photoresponse is obtained using acetonitrile as the dye solvent. Voltage decay measurements indicate that the highly-ordered TiO{sub 2} nanotube-arrays, in comparison with nanoparticulate systems, provide excellent pathways for electron percolation with superior electron lifetimes. The
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Paulose, Maggie;
Shankar, Karthik;
Varghese, Oomman K;
Mor, Gopal K;
Grimes, Craig A
[1]
- Department of Electrical Engineering, Department of Material Science and Engineering, The Pennsylvania State University, University Park, PA 16802 (United States)
Citation Formats
Paulose, Maggie, Shankar, Karthik, Varghese, Oomman K, Mor, Gopal K, and Grimes, Craig A.
Application of highly-ordered TiO{sub 2} nanotube-arrays in heterojunction dye-sensitized solar cells.
United Kingdom: N. p.,
2006.
Web.
doi:10.1088/0022-3727/39/12/005; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Paulose, Maggie, Shankar, Karthik, Varghese, Oomman K, Mor, Gopal K, & Grimes, Craig A.
Application of highly-ordered TiO{sub 2} nanotube-arrays in heterojunction dye-sensitized solar cells.
United Kingdom.
https://doi.org/10.1088/0022-3727/39/12/005; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)
Paulose, Maggie, Shankar, Karthik, Varghese, Oomman K, Mor, Gopal K, and Grimes, Craig A.
2006.
"Application of highly-ordered TiO{sub 2} nanotube-arrays in heterojunction dye-sensitized solar cells."
United Kingdom.
https://doi.org/10.1088/0022-3727/39/12/005; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@misc{etde_20825841,
title = {Application of highly-ordered TiO{sub 2} nanotube-arrays in heterojunction dye-sensitized solar cells}
author = {Paulose, Maggie, Shankar, Karthik, Varghese, Oomman K, Mor, Gopal K, and Grimes, Craig A}
abstractNote = {Highly-ordered TiO{sub 2} nanotube arrays are made by potentiostatic anodization of a titanium film in a fluoride containing electrolyte. Here we describe the application of this unique material architecture in both front-side and back-side illuminated dye-sensitized solar cells (DSSCs). The back-side illuminated solar cells are based on the use of 6.2 {mu}m long (110 nm pore diameter, 20 nm wall thickness) highly-ordered nanotube-array films made by anodization of a 250 {mu}m thick Ti foil in a KF electrolyte. Front-side illuminated solar cells use a negative electrode composed of optically transparent nanotube arrays, approximately 3600 nm in length (46 nm pore diameter, 17 nm wall thickness), grown on a fluorine doped tin oxide coated glass substrate by anodic oxidation of a previously deposited RF-sputtered titanium thin film in a HF electrolyte. After crystallization by oxygen annealling the nanotube-arrays are treated with TiCl{sub 4} to enhance photocurrent amplitudes. The arrays are then sensitized by a self-assembled monolayer of bis(tetrabutylammonium)-cis-(dithiocyanato)-N, N'- bis(4-carboxylato-4'-carboxylic acid-2, 2'-bipyridine)ruthenium(II) (commonly called 'N719'). Superior photoresponse is obtained using acetonitrile as the dye solvent. Voltage decay measurements indicate that the highly-ordered TiO{sub 2} nanotube-arrays, in comparison with nanoparticulate systems, provide excellent pathways for electron percolation with superior electron lifetimes. The front-side illuminated DSSCs, show a typical AM 1.5 photocurrent of 10.3 mA cm{sup -2}, open circuit voltage of 0.84 V, 0.54 fill factor, and 4.7% efficiency although the transparent nanotube-array negative electrode is only 360 nm thick. The back-side illuminated DSSCs show an AM 1.5 short-circuit current density of 10.6 mA cm{sup -2}, 0.82 V open circuit potential and a 0.51 fill factor yielding a solar conversion efficiency of 4.4%.}
doi = {10.1088/0022-3727/39/12/005; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)}
journal = []
issue = {12}
volume = {39}
place = {United Kingdom}
year = {2006}
month = {Jun}
}
title = {Application of highly-ordered TiO{sub 2} nanotube-arrays in heterojunction dye-sensitized solar cells}
author = {Paulose, Maggie, Shankar, Karthik, Varghese, Oomman K, Mor, Gopal K, and Grimes, Craig A}
abstractNote = {Highly-ordered TiO{sub 2} nanotube arrays are made by potentiostatic anodization of a titanium film in a fluoride containing electrolyte. Here we describe the application of this unique material architecture in both front-side and back-side illuminated dye-sensitized solar cells (DSSCs). The back-side illuminated solar cells are based on the use of 6.2 {mu}m long (110 nm pore diameter, 20 nm wall thickness) highly-ordered nanotube-array films made by anodization of a 250 {mu}m thick Ti foil in a KF electrolyte. Front-side illuminated solar cells use a negative electrode composed of optically transparent nanotube arrays, approximately 3600 nm in length (46 nm pore diameter, 17 nm wall thickness), grown on a fluorine doped tin oxide coated glass substrate by anodic oxidation of a previously deposited RF-sputtered titanium thin film in a HF electrolyte. After crystallization by oxygen annealling the nanotube-arrays are treated with TiCl{sub 4} to enhance photocurrent amplitudes. The arrays are then sensitized by a self-assembled monolayer of bis(tetrabutylammonium)-cis-(dithiocyanato)-N, N'- bis(4-carboxylato-4'-carboxylic acid-2, 2'-bipyridine)ruthenium(II) (commonly called 'N719'). Superior photoresponse is obtained using acetonitrile as the dye solvent. Voltage decay measurements indicate that the highly-ordered TiO{sub 2} nanotube-arrays, in comparison with nanoparticulate systems, provide excellent pathways for electron percolation with superior electron lifetimes. The front-side illuminated DSSCs, show a typical AM 1.5 photocurrent of 10.3 mA cm{sup -2}, open circuit voltage of 0.84 V, 0.54 fill factor, and 4.7% efficiency although the transparent nanotube-array negative electrode is only 360 nm thick. The back-side illuminated DSSCs show an AM 1.5 short-circuit current density of 10.6 mA cm{sup -2}, 0.82 V open circuit potential and a 0.51 fill factor yielding a solar conversion efficiency of 4.4%.}
doi = {10.1088/0022-3727/39/12/005; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)}
journal = []
issue = {12}
volume = {39}
place = {United Kingdom}
year = {2006}
month = {Jun}
}