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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.

No MeSH data available.


Related in: MedlinePlus

J-V curves of DSSCs based on 24-μm O-FTO, 24-μm C-FTO, and 10-μm NP-FTO.
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Figure 4: J-V curves of DSSCs based on 24-μm O-FTO, 24-μm C-FTO, and 10-μm NP-FTO.

Mentions: The photocurrent-photovoltage (J-V) properties of DSSCs based on 24-μm O-FTO and 24-μm C-FTO as well as a 10-μm NP-FTO measured under AM 1.5 G illumination (100 mW/cm2) are displayed in Figure 4. For comparison, the NP-FTO-based DSSC exhibited a short-circuit photocurrent density (Jsc) of 8.04 mA/cm2, open circuit voltage (Voc) of 0.73V, fill factor (FF) of 0.64, and efficiency (η) of 3.75%. The C-FTO-based DSSC shows improved performance, with Jsc of 10.32 mA/cm2, Voc of 0.71V, FF of 0.62, and η of 4.52%. Efficiency increased by 20% compared to NP-FTO-based DSSC. With O-FTO as the photoanode, Jsc of the DSSC increased to 10.65 mA/cm2, with Voc of 0.70 V, FF of 0.70, and η of 5.32%. The fill factor also increased with the elimination of the barrier layer which reduced the series resistance [24]. Efficiency increased by 18% compared to C-FTO-based DSSC. The lower efficiency of C-FTO-based DSSCs was probably attributed to the presence of the barrier layer existed at the bottom side which may hinder solar light, active material, and electron transport and diffusion.


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)

J-V curves of DSSCs based on 24-μm O-FTO, 24-μm C-FTO, and 10-μm NP-FTO.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 4: J-V curves of DSSCs based on 24-μm O-FTO, 24-μm C-FTO, and 10-μm NP-FTO.
Mentions: The photocurrent-photovoltage (J-V) properties of DSSCs based on 24-μm O-FTO and 24-μm C-FTO as well as a 10-μm NP-FTO measured under AM 1.5 G illumination (100 mW/cm2) are displayed in Figure 4. For comparison, the NP-FTO-based DSSC exhibited a short-circuit photocurrent density (Jsc) of 8.04 mA/cm2, open circuit voltage (Voc) of 0.73V, fill factor (FF) of 0.64, and efficiency (η) of 3.75%. The C-FTO-based DSSC shows improved performance, with Jsc of 10.32 mA/cm2, Voc of 0.71V, FF of 0.62, and η of 4.52%. Efficiency increased by 20% compared to NP-FTO-based DSSC. With O-FTO as the photoanode, Jsc of the DSSC increased to 10.65 mA/cm2, with Voc of 0.70 V, FF of 0.70, and η of 5.32%. The fill factor also increased with the elimination of the barrier layer which reduced the series resistance [24]. Efficiency increased by 18% compared to C-FTO-based DSSC. The lower efficiency of C-FTO-based DSSCs was probably attributed to the presence of the barrier layer existed at the bottom side which may hinder solar light, active material, and electron transport and diffusion.

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