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Ultrafast Fabrication of Flexible Dye-Sensitized Solar Cells by Ultrasonic Spray-Coating Technology.

Han HG, Weerasinghe HC, Min Kim K, Soo Kim J, Cheng YB, Jones DJ, Holmes AB, Kwon TH - Sci Rep (2015)

Bottom Line: This study investigates novel deposition techniques for the preparation of TiO2 electrodes for use in flexible dye-sensitized solar cells.These proposed new methods, namely pre-dye-coating and codeposition ultrasonic spraying, eliminate the conventional need for time-consuming processes such as dye soaking and high-temperature sintering.Power conversion efficiencies of over 4.0% were achieved with electrodes prepared on flexible polymer substrates using this new deposition technology and N719 dye as a sensitizer.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan, 689-798, Republic of Korea.

ABSTRACT
This study investigates novel deposition techniques for the preparation of TiO2 electrodes for use in flexible dye-sensitized solar cells. These proposed new methods, namely pre-dye-coating and codeposition ultrasonic spraying, eliminate the conventional need for time-consuming processes such as dye soaking and high-temperature sintering. Power conversion efficiencies of over 4.0% were achieved with electrodes prepared on flexible polymer substrates using this new deposition technology and N719 dye as a sensitizer.

No MeSH data available.


Related in: MedlinePlus

1H NMR spectra for the aromatic region of N719 dye obtained from solutions of N719 (black), codepositon with CIP (blue), and pre-dye-coating with CIP (red) in DMSO-d6 containing 0.1 M NaOD.
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f7: 1H NMR spectra for the aromatic region of N719 dye obtained from solutions of N719 (black), codepositon with CIP (blue), and pre-dye-coating with CIP (red) in DMSO-d6 containing 0.1 M NaOD.

Mentions: The possibility of dye decomposition during CIP was investigated through ultraviolet-visible (UV-vis) and nuclear magnetic resonance (NMR) spectroscopy. For the UV-Vis investigation, four different types of detached N719 dye solutions were prepared by desorbing with a 0.1 M KOH ethanol solution a: pre-dye-coating solution prior to CIP, pre-dye-coating solution after CIP, codeposition solution before CIP and codeposition solution after CIP (details of this are provided in the supporting information). To provide a suitable reference, N719 dye in an ethanol:water (1:1 v/v %) solution containing 0.1 M KOH was also prepared. Comparison of the normalized UV-vis spectra of these solutions (Fig. 6) shows that they are all very similar to each other, with two broad metal-to-ligand charge transfer (MLCT) bands at 370 nm and 507 nm, and an intraligand (π-π*) charge-transfer transition at 307 nm. For the NMR investigation, along with a N719 dye reference, two different types of detached N719 dyes were prepared through desorption with 0.1 M NaOH: codeposition with CIP and pre-dye-coating with CIP (see the supporting information for details). As can be seen in Fig. 7, the NMR results obtained from deuterated dimethyl sulfoxide (DMSO-d6) show no difference between the reference N719 and either codeposition with CIP or pre-dye-coating with CIP solutions. As a result, it can be safely concluded that there is no decomposition of the dye during CIP.


Ultrafast Fabrication of Flexible Dye-Sensitized Solar Cells by Ultrasonic Spray-Coating Technology.

Han HG, Weerasinghe HC, Min Kim K, Soo Kim J, Cheng YB, Jones DJ, Holmes AB, Kwon TH - Sci Rep (2015)

1H NMR spectra for the aromatic region of N719 dye obtained from solutions of N719 (black), codepositon with CIP (blue), and pre-dye-coating with CIP (red) in DMSO-d6 containing 0.1 M NaOD.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4588502&req=5

f7: 1H NMR spectra for the aromatic region of N719 dye obtained from solutions of N719 (black), codepositon with CIP (blue), and pre-dye-coating with CIP (red) in DMSO-d6 containing 0.1 M NaOD.
Mentions: The possibility of dye decomposition during CIP was investigated through ultraviolet-visible (UV-vis) and nuclear magnetic resonance (NMR) spectroscopy. For the UV-Vis investigation, four different types of detached N719 dye solutions were prepared by desorbing with a 0.1 M KOH ethanol solution a: pre-dye-coating solution prior to CIP, pre-dye-coating solution after CIP, codeposition solution before CIP and codeposition solution after CIP (details of this are provided in the supporting information). To provide a suitable reference, N719 dye in an ethanol:water (1:1 v/v %) solution containing 0.1 M KOH was also prepared. Comparison of the normalized UV-vis spectra of these solutions (Fig. 6) shows that they are all very similar to each other, with two broad metal-to-ligand charge transfer (MLCT) bands at 370 nm and 507 nm, and an intraligand (π-π*) charge-transfer transition at 307 nm. For the NMR investigation, along with a N719 dye reference, two different types of detached N719 dyes were prepared through desorption with 0.1 M NaOH: codeposition with CIP and pre-dye-coating with CIP (see the supporting information for details). As can be seen in Fig. 7, the NMR results obtained from deuterated dimethyl sulfoxide (DMSO-d6) show no difference between the reference N719 and either codeposition with CIP or pre-dye-coating with CIP solutions. As a result, it can be safely concluded that there is no decomposition of the dye during CIP.

Bottom Line: This study investigates novel deposition techniques for the preparation of TiO2 electrodes for use in flexible dye-sensitized solar cells.These proposed new methods, namely pre-dye-coating and codeposition ultrasonic spraying, eliminate the conventional need for time-consuming processes such as dye soaking and high-temperature sintering.Power conversion efficiencies of over 4.0% were achieved with electrodes prepared on flexible polymer substrates using this new deposition technology and N719 dye as a sensitizer.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology, Ulsan, 689-798, Republic of Korea.

ABSTRACT
This study investigates novel deposition techniques for the preparation of TiO2 electrodes for use in flexible dye-sensitized solar cells. These proposed new methods, namely pre-dye-coating and codeposition ultrasonic spraying, eliminate the conventional need for time-consuming processes such as dye soaking and high-temperature sintering. Power conversion efficiencies of over 4.0% were achieved with electrodes prepared on flexible polymer substrates using this new deposition technology and N719 dye as a sensitizer.

No MeSH data available.


Related in: MedlinePlus