High Efficient Pt Counter Electrode Prepared by One-step Thermal Decomposition for Dye-sensitized Solar Cell

doi:10.11901/1005.3093.2014.572

Chinese Journal of Materials Research

2015, Vol. 29

Issue (9): 656-662 DOI: 10.11901/1005.3093.2014.572

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High Efficient Pt Counter Electrode Prepared by One-step Thermal Decomposition for Dye-sensitized Solar Cell

Siqian LI,Jie HUANG,Jian XIE,Jun ZHANG,Cong YE(

),Hao WANG

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China

Cite this article:

Siqian LI,Jie HUANG,Jian XIE,Jun ZHANG,Cong YE,Hao WANG. High Efficient Pt Counter Electrode Prepared by One-step Thermal Decomposition for Dye-sensitized Solar Cell. Chinese Journal of Materials Research, 2015, 29(9): 656-662.

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Abstract

The Pt counter electrode was prepared on fluorine-doped tin oxide (FTO) glass by spin-coating and then thermal-decomposition of the precursor of H₂PtCl₆?6H₂O. The influence of the number of spin coating-annealing treatment on the amount of deposited platinum and light transmittance for the electrode, as well as the photovoltaic performance of dye sensitized solar cells assembled with the counter electrode was investigated. It was found that the optimal power conversion efficiency of 6.78% was obtained for cells assembled with Pt/FTO counter electrode after five spin coating-annealing treatments, which was higher than that of the cell assembled with the traditional counter electrode prepared by magnetron sputtering technique. Thereafter, the required concentration and volume of H₂PtCl₆?6H₂O precursor for the process could be further optimized in terms of the optimal number of spin coating-annealing and the amount of deposited platinum on the FTO glass counter electrode to ensure the best power conversion efficiency of dye sensitized solar cells. Furthermore, a novel Pt/FTO counter electrode was prepared by a one-step drop coating-annealing process, which exhibited high transmittance and low deposited platinum and then the power conversion efficiency could reach to 6.92% for cells assembled with such Pt/FTO counter electrode.

Key words: synthesizing and processing technics TiO₂ nanotube arrays Pt counter electrode dye-sensitized solar cell thermal decomposition photovoltaic performance

Received: 08 October 2014

Fund: *Supported by National Natural Science Foundation of China Nos. 11374090 & 51372075.

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	Siqian LI
	Jie HUANG
	Jian XIE
	Jun ZHANG
	Cong YE
	Hao WANG

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https://www.cjmr.org/EN/10.11901/1005.3093.2014.572 OR https://www.cjmr.org/EN/Y2015/V29/I9/656

Fig.1 XRD spectrum of Pt counter electrode on FTO glass

Fig.2 SEM images of FTO glass (a) and Pt counter electrode on FTO glass for 1 time (b), 3 (c), 5 (d), 7(e) and 9 (f) times spin coating/annealing, respectively

Fig.3 Light transmittance for different spin coating and annealing times

Fig.4 J-V curves of DSSCs based on different Pt counter electrodes

Table1 Photovoltaic performance of DSSCs based on different Pt/FTO counter electrodes

Fig.5 XRD spectrum (a), light transmittance (b), J-V curve of assembled DSSC (c) and planar view SEM image of Pt counter electrode prepared by one-step drop casting/annealing treatment

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