Preparation, characterization, and application of titanium nano-tube array in dye-sensitized solar cells

Ho, Shih Yu; Su, Chaochin; Cheng, C. C.; Kathirvel, Sasipriya; Li, Chung Yen; Li, Wen Ren

doi:10.1186/1556-276x-7-147

Cited by 10 publications

(7 citation statements)

References 15 publications

(18 reference statements)

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“…The nanotube thin film is mixed with Ti (IV) isopropoxide (TTIP) and glacial acetic acid to form an adhesive for adhering nanotubes onto the FTO glass. 19,20 The last step in the fabrication of the front-illuminated photoelectrode was placing it in an oven for heat treatment under 450 o C.…”

Section: Methodsmentioning

confidence: 99%

Highly-ordered arrays of TiO2 thin film for dye-sensitized solar cells fabricated by anodic oxidation process

Chang

Kuo

Chou

2015

Int. J. Precis. Eng. Manuf.

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Highly ordered arrays of TiO 2 photoelectrode thin films of dye-sensitized solar cells (DSSCs) were fabricated by anodic oxidation method. This study analyzed the effects of electrolytes under similar NH 4 F concentrations but different reaction times in the anodic oxidation process on the photoelectric conversion efficiency of DSSC, open-circuit voltage decay, electron lifetime, and incident photon-to-electron conversion efficiency (IPCE) of the prepared DSSC. Experimental results show that the TiO 2 nanotube thin film prepared by anodic oxidation with an electrolyte with a NH 4 F concentration at 0.5 wt% and with a reaction time of 5 hr can be fabricated with a length of 17 µm and a photoelectric conversion efficiency of 4.87%, open-circuit voltage of 0.74 V, and short-circuit current density of 13.2 mA/cm 2 . Additionally, the same NH 4 F concentration but with a reaction time of 10 hr achieves a length of 22 µm and a photoelectric conversion efficiency of 6.58%, open-circuit voltage of 0.81 V, and short-circuit current density of 16.1 mA/cm 2 .

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Section: Methodsmentioning

confidence: 99%

Highly-ordered arrays of TiO2 thin film for dye-sensitized solar cells fabricated by anodic oxidation process

Chang

Kuo

Chou

2015

Int. J. Precis. Eng. Manuf.

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“…The conversion efficiency is higher than that for back-illuminated DSSCs. (15)(16)(17)(18)(19) The open-circuit voltage decreased from 0.67 to 0.64 V as lengths of nanotubes increased from 21 to 28 μm. This voltage decrease may be due to the I 3 − anion in diffusing to the counter electrode, which in turn leads to a decrease in the reduction reaction and a lower open-circuit voltage.…”

Section: Assembling and Characterizing The Dsscsmentioning

confidence: 99%

Fabrication of Open-End TiO2 Nanotubes Attached to Front-Illuminated Dye-Sensitized Solar Cells

2016

Sensors and Materials

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In this study, we used secondary anodization to prepare open-end TiO 2 nanotube arrays and then transferred them to fluorine-doped tin oxide (FTO) glass attached to front-illuminated dye-sensitized solar cells (DSSCs). X-ray diffraction (XRD) patterns found that TiO 2 nanotubes form the anatase phase when the annealing temperature is greater than 280 °C. The best annealing temperature for TiO 2 nanotubes is 450 °C. From field-emission scanning electron microscopy (FE-SEM) analysis, the lengths of TiO 2 nanotubes were 15, 21, and 28 μm when anodized for 2, 3, and 4 h, respectively. The conversion efficiency for different lengths of TiO 2 nanotube photoelectrodes was 4.82, 5.08, and 4.85% for lengths of 15, 21, and 28 μm, respectively. From the results of electrochemistry impedance spectroscopy (EIS), the value of R k was 5.4, 5.5, and 5.4 Ω for lengths of TiO 2 nanotubes of 15, 21, and 28 μm, respectively. These results indicate that the electron recombination rates for different lengths of TiO 2 nanotubes are nearly identical. In addition, the value of R d ware 8.6, 7.2, and 8.5 Ω for lengths of TiO 2 nanotubes of 15, 21, and 28 μm, respectively. This result reveals that overlong TiO 2 nanotubes make it difficult for the I 3 − anion to diffuse to the counter electrode, resulting in an increase in diffusion transfer resistance R d and a decrease in conversion efficiency of the DSSCs. In general, the open-end TiO 2 nanotubes attached to front-illuminated DSSCs have a better conversion efficiency for DSSCs than those with backside illumination, and the best conversion efficiency for DSSCs is 5.08% when the length of the TiO 2 nanotubes is 21 μm.

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“…Recent studies have involved the fabrication of TiO2 anatase as nanoparticles [37][38], nanowires [34][35][36], nanotubes [37][38][39][40] and nanorods [41][42][43]. Taleb et.…”

Section: Titanium Dioxide (Tio2)mentioning

confidence: 99%

Recent improvements on TiO₂and ZnO nanostructure photoanode for dye sensitized solar cells: A brief review

et al. 2017

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Abstract. Dye sensitized solar cell (DSSC) is a promising candidate for a low cost solar harvesting technology as it promised a low manufacturing cost, ease of fabrication and reasonable conversion efficiency. Basic structure of DSSC consists of photoanode, dye, electrolyte and counter electrode. Photoanode plays an important role for a DSSC as it supports the dye molecules and helps in the electron transfer that will determine the energy conversion efficiency. This paper emphasizes the various improvements that had been done on the TiO2 and ZnO photoanode nanostructures synthesized through thermal method. For overall comparisons, ZnO nanoflowers photoanode had achieved the highest energy conversion efficiency of 4.7% due to its ability of internal light scattering that had increased the electron transportation rate. This has made ZnO as a potential candidate to replace TiO2 as a photoanode material in DSSC.

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Preparation, characterization, and application of titanium nano-tube array in dye-sensitized solar cells

Cited by 10 publications

References 15 publications

Highly-ordered arrays of TiO2 thin film for dye-sensitized solar cells fabricated by anodic oxidation process

Highly-ordered arrays of TiO2 thin film for dye-sensitized solar cells fabricated by anodic oxidation process

Fabrication of Open-End TiO2 Nanotubes Attached to Front-Illuminated Dye-Sensitized Solar Cells

Recent improvements on TiO₂and ZnO nanostructure photoanode for dye sensitized solar cells: A brief review

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Preparation, characterization, and application of titanium nano-tube array in dye-sensitized solar cells

Cited by 10 publications

References 15 publications

Highly-ordered arrays of TiO2 thin film for dye-sensitized solar cells fabricated by anodic oxidation process

Highly-ordered arrays of TiO2 thin film for dye-sensitized solar cells fabricated by anodic oxidation process

Fabrication of Open-End TiO2 Nanotubes Attached to Front-Illuminated Dye-Sensitized Solar Cells

Recent improvements on TiO2and ZnO nanostructure photoanode for dye sensitized solar cells: A brief review

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Recent improvements on TiO₂and ZnO nanostructure photoanode for dye sensitized solar cells: A brief review