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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 O-FTO and NT-Ti with the same film thickness. Thickness is 24 μm.
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Figure 5: J-V curves of DSSCs based on O-FTO and NT-Ti with the same film thickness. Thickness is 24 μm.

Mentions: Figure 5 shows the J-V curves of DSSCs based on O-FTO and NT-Ti with the same film thickness (approximately 24 μm) measured under AM 1.5 G illumination (100 mW/cm2). The O-FTO-based DSSC was front-side illuminated, and the NT-Ti-based one was backside illuminated. It clearly shows that the Jsc (6.99 mA/cm2) and Voc (0.64V) of the back-illumination mode are significantly smaller than that of the front illumination mode (10.65 mA/cm2 and 0.70 V). The efficiency of O-FTO-based DSSC is 5.32%, which is much higher than the NT-Ti one of 3.04%. That is possibly because the counter electrode (Pt) and the electrolyte (I¯/I3¯) attenuate the incident light intensity for the backside illumination mode, and also, a rutile phase was easy to be formed at the interface between the barrier layer and Ti substrate when annealed at high temperature, which may have a bad effect on charge collection [24].


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 O-FTO and NT-Ti with the same film thickness. Thickness is 24 μm.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 5: J-V curves of DSSCs based on O-FTO and NT-Ti with the same film thickness. Thickness is 24 μm.
Mentions: Figure 5 shows the J-V curves of DSSCs based on O-FTO and NT-Ti with the same film thickness (approximately 24 μm) measured under AM 1.5 G illumination (100 mW/cm2). The O-FTO-based DSSC was front-side illuminated, and the NT-Ti-based one was backside illuminated. It clearly shows that the Jsc (6.99 mA/cm2) and Voc (0.64V) of the back-illumination mode are significantly smaller than that of the front illumination mode (10.65 mA/cm2 and 0.70 V). The efficiency of O-FTO-based DSSC is 5.32%, which is much higher than the NT-Ti one of 3.04%. That is possibly because the counter electrode (Pt) and the electrolyte (I¯/I3¯) attenuate the incident light intensity for the backside illumination mode, and also, a rutile phase was easy to be formed at the interface between the barrier layer and Ti substrate when annealed at high temperature, which may have a bad effect on charge collection [24].

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