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Nitrogen-Reduced Graphene Oxide Modification for Improving Energy Conversion Efficiency of Dye-Sensitized Solar Cells
Zhonghua Xiang,Xing Zhou,Dapeng Cao *
State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029
*Correspondence author
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Funding: Doctoral Program from MOE of China (No.20100010110001), Outstanding Talent Funding from BUCT(No.RC1301), National Scientific Research Funding (No.ZZ1304), National NSF of China(No.91334203, 21274011), National 863 Programs (No.2013AA031901)
Opened online:31 March 2014
Accepted by: none
Citation: Zhonghua Xiang,Xing Zhou,Dapeng Cao.Nitrogen-Reduced Graphene Oxide Modification for Improving Energy Conversion Efficiency of Dye-Sensitized Solar Cells[OL]. [31 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4589749
 
 
As potential third generation photovoltaic cells, the dye-sensitized solar cells (DSSCs) have attracted extensive research interests and have become one of hot topics in current research. In this work, a series of the DSSCs based on the TiO2 photoanodes modified by graphene oxide (GO) and nitrogen reduced graphene oxide (N-rGO) were fabricated. Results indicated that N-rGO is a better TiO2 photoanode modifier of the DSSC, compared to GO. With the increase of addition amount of N-rGO, the open circuit voltage increases, while both the short circuit current and power conversion efficiency (PCE) of the DSSCs exhibit a maximum at the content of 0.2 wt% N-rGO. In particular, the maximum PCE of the DSSCs reaches 7.19% in this work, which gains a 13.23% enhancement compared to the PCE of 6.42% of conventional TiO2 DSSCs. The enhancement of the PCE of the DSSCs with N-rGO was mainly attributed to the reduction of electron recombination and the increase of electron transfer efficiency after incorporating N-rGO into TiO2 photoanodes.
Keywords:Dye sensitized solar cells; Nitrogen reduced graphene oxide; Graphene oxide; TiO2 photanodes
 
 
 

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