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High-efficiency dye-sensitized solar cells based on robust and both-end-open TiO2 nanotube membranes.

Lin J, Chen J, Chen X - Nanoscale Res Lett (2011)

Bottom Line: The high-quality TiO2 membranes used here were obtained by a self-detaching technique, with the superiorities of facile but reliable procedures.Compared with those DSSCs consisting of the bottom-closed membranes or attached to Ti substrate, the carefully assembled and front-side illuminated DSSCs showed an enhanced solar energy conversion efficiency as high as 5.32% of 24-μm-thick TiO2 nanotube membranes without further treatments.These results reveal that by facilitating high-quality membrane synthesis, this kind of DSSCs assembly with optimized tube configuration can have a fascinating future.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Physics, The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. xfchen@sjtu.edu.cn.

ABSTRACT
In the present work, dye-sensitized solar cells (DSSCs) were fabricated by incorporating transparent electrodes of ordered free-standing TiO2 nanotube (TNT) arrays with both ends open transferred onto fluorine-doped tin oxide (FTO) conductive glass. The high-quality TiO2 membranes used here were obtained by a self-detaching technique, with the superiorities of facile but reliable procedures. Afterwards, these TNT membranes can be easily transferred to FTO glass substrates by TiO2 nanoparticle paste without any crack. Compared with those DSSCs consisting of the bottom-closed membranes or attached to Ti substrate, the carefully assembled and front-side illuminated DSSCs showed an enhanced solar energy conversion efficiency as high as 5.32% of 24-μm-thick TiO2 nanotube membranes without further treatments. These results reveal that by facilitating high-quality membrane synthesis, this kind of DSSCs assembly with optimized tube configuration can have a fascinating future.

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FE-SEM images of self-detached free-standing TNT membranes. Cross-section view of TNT membranes with (a) 0.5 h and (b) 1 h of second-step anodization; the bottom view of membrane subjected to the thermal treatment at (c) 200°C and (d) 400°C.
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Figure 2: FE-SEM images of self-detached free-standing TNT membranes. Cross-section view of TNT membranes with (a) 0.5 h and (b) 1 h of second-step anodization; the bottom view of membrane subjected to the thermal treatment at (c) 200°C and (d) 400°C.

Mentions: Figure 2 gives the FE-SEM images of self-detached free-standing TNT membranes. Figure 2a, b shows the cross sections of TNT membranes whose durations of second-step anodization were 0.5 and 1 h, respectively. A tube length of 9.72 μm can be obtained in 0.5 h and 23.8 μm in 1 h. Figure 2c shows the bottom view of membrane subjected to the thermal treatment at 200°C. It can be seen that highly ordered TiO2 nanotube arrays are close-packed together with all the bottom ends open. Figure 2d shows the bottom view of membrane subjected to the thermal treatment at 400°C. Almost all the tube ends are closed.


High-efficiency dye-sensitized solar cells based on robust and both-end-open TiO2 nanotube membranes.

Lin J, Chen J, Chen X - Nanoscale Res Lett (2011)

FE-SEM images of self-detached free-standing TNT membranes. Cross-section view of TNT membranes with (a) 0.5 h and (b) 1 h of second-step anodization; the bottom view of membrane subjected to the thermal treatment at (c) 200°C and (d) 400°C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211988&req=5

Figure 2: FE-SEM images of self-detached free-standing TNT membranes. Cross-section view of TNT membranes with (a) 0.5 h and (b) 1 h of second-step anodization; the bottom view of membrane subjected to the thermal treatment at (c) 200°C and (d) 400°C.
Mentions: Figure 2 gives the FE-SEM images of self-detached free-standing TNT membranes. Figure 2a, b shows the cross sections of TNT membranes whose durations of second-step anodization were 0.5 and 1 h, respectively. A tube length of 9.72 μm can be obtained in 0.5 h and 23.8 μm in 1 h. Figure 2c shows the bottom view of membrane subjected to the thermal treatment at 200°C. It can be seen that highly ordered TiO2 nanotube arrays are close-packed together with all the bottom ends open. Figure 2d shows the bottom view of membrane subjected to the thermal treatment at 400°C. Almost all the tube ends are closed.

Bottom Line: The high-quality TiO2 membranes used here were obtained by a self-detaching technique, with the superiorities of facile but reliable procedures.Compared with those DSSCs consisting of the bottom-closed membranes or attached to Ti substrate, the carefully assembled and front-side illuminated DSSCs showed an enhanced solar energy conversion efficiency as high as 5.32% of 24-μm-thick TiO2 nanotube membranes without further treatments.These results reveal that by facilitating high-quality membrane synthesis, this kind of DSSCs assembly with optimized tube configuration can have a fascinating future.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Physics, The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China. xfchen@sjtu.edu.cn.

ABSTRACT
In the present work, dye-sensitized solar cells (DSSCs) were fabricated by incorporating transparent electrodes of ordered free-standing TiO2 nanotube (TNT) arrays with both ends open transferred onto fluorine-doped tin oxide (FTO) conductive glass. The high-quality TiO2 membranes used here were obtained by a self-detaching technique, with the superiorities of facile but reliable procedures. Afterwards, these TNT membranes can be easily transferred to FTO glass substrates by TiO2 nanoparticle paste without any crack. Compared with those DSSCs consisting of the bottom-closed membranes or attached to Ti substrate, the carefully assembled and front-side illuminated DSSCs showed an enhanced solar energy conversion efficiency as high as 5.32% of 24-μm-thick TiO2 nanotube membranes without further treatments. These results reveal that by facilitating high-quality membrane synthesis, this kind of DSSCs assembly with optimized tube configuration can have a fascinating future.

No MeSH data available.


Related in: MedlinePlus