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Quantum dot-sensitized solar cells having 3D-TiO2 flower-like structures on the surface of titania nanorods with CuS counter electrode.

Buatong N, Tang IM, Pon-On W - Nanoscale Res Lett (2015)

Bottom Line: Using CuS as the counter electrode instead of Pt offers the best performance and leads to an increase in the conversion efficiency (η).The efficiency of the CdS/CdSe/ZnS QD-loaded FTiR assembling CuS counter electrode cell improved from η = 2.715% (Voc = 0.692 V, Jsc = 5.896 mA/cm(2), FF = 0.665) to η = 0.703% (Voc = 0.665 V, Jsc = 2.108 mA/cm(2), FF = 0.501) for the QD-loaded FTiR assembling Pt counter electrode cell.These studies reveal a synergistically beneficial effect on the solar-to-current conversion of these QD-sensitized solar cells when a CuS counter electrode is used instead of the usual Pt counter electrode.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao Chatuchak, Bangkok, 10900 Thailand.

ABSTRACT
The photovoltaic performance of a quantum dot (QD)-sensitized solar cell consisting of CdS/CdSe/ZnS QDs loaded onto the surface of the three-dimensional (3D) flower-like TiO2 structure grown on an array (1D) of TiO2 nanorods (FTiR) is studied. The flower-like structure on the rod-shaped titania was synthesized using a double-step hydrothermal process. The FTiR array exhibited a 3D/1D composite structure with a specific surface area of 81.87 m(2)/g. Using CuS as the counter electrode instead of Pt offers the best performance and leads to an increase in the conversion efficiency (η). The efficiency of the CdS/CdSe/ZnS QD-loaded FTiR assembling CuS counter electrode cell improved from η = 2.715% (Voc = 0.692 V, Jsc = 5.896 mA/cm(2), FF = 0.665) to η = 0.703% (Voc = 0.665 V, Jsc = 2.108 mA/cm(2), FF = 0.501) for the QD-loaded FTiR assembling Pt counter electrode cell. These studies reveal a synergistically beneficial effect on the solar-to-current conversion of these QD-sensitized solar cells when a CuS counter electrode is used instead of the usual Pt counter electrode.

No MeSH data available.


The photocurrent-voltage (J-V) curves of the assembled QDSSCs. The photocurrent-voltage (J-V) curves of the assembled QDSSCs having the FTiR photoelectrodes performance on the CuS and Pt counter electrode.
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Fig8: The photocurrent-voltage (J-V) curves of the assembled QDSSCs. The photocurrent-voltage (J-V) curves of the assembled QDSSCs having the FTiR photoelectrodes performance on the CuS and Pt counter electrode.

Mentions: Figure 8 shows the photocurrent-voltage (J-V) curves of the assembled QDSSCs having the Pt and CuS photoelectrodes when measured under an illumination of 1 sun (AM 1.5, 100 mW cm−2). The performance parameters of the solar cells, including open circuit potential (Voc), short circuit current (Jsc), fill factor (FF), and power conversion efficiency (η) can be seen in Figure 8. It is evident that the performance parameters of the solar cells have been greatly improved by using the CuS counter as the electrode when compared to that with the Pt electrode.Figure 8


Quantum dot-sensitized solar cells having 3D-TiO2 flower-like structures on the surface of titania nanorods with CuS counter electrode.

Buatong N, Tang IM, Pon-On W - Nanoscale Res Lett (2015)

The photocurrent-voltage (J-V) curves of the assembled QDSSCs. The photocurrent-voltage (J-V) curves of the assembled QDSSCs having the FTiR photoelectrodes performance on the CuS and Pt counter electrode.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385307&req=5

Fig8: The photocurrent-voltage (J-V) curves of the assembled QDSSCs. The photocurrent-voltage (J-V) curves of the assembled QDSSCs having the FTiR photoelectrodes performance on the CuS and Pt counter electrode.
Mentions: Figure 8 shows the photocurrent-voltage (J-V) curves of the assembled QDSSCs having the Pt and CuS photoelectrodes when measured under an illumination of 1 sun (AM 1.5, 100 mW cm−2). The performance parameters of the solar cells, including open circuit potential (Voc), short circuit current (Jsc), fill factor (FF), and power conversion efficiency (η) can be seen in Figure 8. It is evident that the performance parameters of the solar cells have been greatly improved by using the CuS counter as the electrode when compared to that with the Pt electrode.Figure 8

Bottom Line: Using CuS as the counter electrode instead of Pt offers the best performance and leads to an increase in the conversion efficiency (η).The efficiency of the CdS/CdSe/ZnS QD-loaded FTiR assembling CuS counter electrode cell improved from η = 2.715% (Voc = 0.692 V, Jsc = 5.896 mA/cm(2), FF = 0.665) to η = 0.703% (Voc = 0.665 V, Jsc = 2.108 mA/cm(2), FF = 0.501) for the QD-loaded FTiR assembling Pt counter electrode cell.These studies reveal a synergistically beneficial effect on the solar-to-current conversion of these QD-sensitized solar cells when a CuS counter electrode is used instead of the usual Pt counter electrode.

View Article: PubMed Central - PubMed

Affiliation: Department of Physics, Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao Chatuchak, Bangkok, 10900 Thailand.

ABSTRACT
The photovoltaic performance of a quantum dot (QD)-sensitized solar cell consisting of CdS/CdSe/ZnS QDs loaded onto the surface of the three-dimensional (3D) flower-like TiO2 structure grown on an array (1D) of TiO2 nanorods (FTiR) is studied. The flower-like structure on the rod-shaped titania was synthesized using a double-step hydrothermal process. The FTiR array exhibited a 3D/1D composite structure with a specific surface area of 81.87 m(2)/g. Using CuS as the counter electrode instead of Pt offers the best performance and leads to an increase in the conversion efficiency (η). The efficiency of the CdS/CdSe/ZnS QD-loaded FTiR assembling CuS counter electrode cell improved from η = 2.715% (Voc = 0.692 V, Jsc = 5.896 mA/cm(2), FF = 0.665) to η = 0.703% (Voc = 0.665 V, Jsc = 2.108 mA/cm(2), FF = 0.501) for the QD-loaded FTiR assembling Pt counter electrode cell. These studies reveal a synergistically beneficial effect on the solar-to-current conversion of these QD-sensitized solar cells when a CuS counter electrode is used instead of the usual Pt counter electrode.

No MeSH data available.