Supplementary Information for Optimizing Graphene Content In

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Supplementary Information for Optimizing Graphene Content In

Electronic Supplementary Material (ESI) for Nanoscale. This journal is © The Royal Society of Chemistry 2019 Supplementary Information for Optimizing Graphene Content in NiSe/Graphene Nanohybrid Counter Electrode on Boosting Photovoltaic Performance of Dye-sensitized Solar Cells Vignesh Murugadoss,a,b Jing Lin,c Hu Liu,d Xianmin Mai,f e,* b, * a,* Tao Ding, Zhanhu Guo , Subramania Angaiah aElectro-Materials Research Laboratory, Centre for Nanoscience and Technology, Pondicherry University, Puducherry - 605 014, India. bIntegrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996 USA cSchool of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China d Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China e College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China f School of Urban Planning and Architecture, Southwest Minzu University, Chengdu 610041, China *Corresponding Author E-mail: [email protected] or [email protected] (Z. G.) Or [email protected] (S. A.) S-1 NiSe/GN1.00 ) u . a NiSe/GN0.75 ( y t i NiSe/GN0.50 s n e t NiSe/GN0.25 n I NiSe 200 300 400 500 600 700 800 900 Wavenumber (cm-1) Fig. S1 Enlarged version of NiSe and NiSe/GNx (x=0.25 to 1.00) nanohybrids in the region between 150 cm-1 and 800 cm-1. 1.5 1.0 ) 2 - m c . A 0.5 m ( y t i s 0.0 n e D t n -0.5 e r r u C -1.0 Pt -1.5 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Potential (V) Vs Ag/AgCl Fig. S2 CV curves of Pt at the scan rate of 50mV s-1 up to 10 cycles. S-2 Table S1 Statistical data for the photovoltaic parameters of DSSCs fabricated with platinum counter electrode. -2 DSSC Jsc (mA/cm ) Voc (V) FF ƞ (%) 1 15.24 0.723 0.683 7.53 2 15.11 0.728 0.678 7.46 3 15.18 0.740 0.684 7.68 Average 15.177 0.7303 0.6817 7.5567 Deviation 0.0651 0.0087 0.0032 0.1124 Table S2 Statistical data for the photovoltaic parameters of DSSCs fabricated with NiSe counter electrode. -2 DSSC Jsc (mA/cm ) Voc (V) FF ƞ (%) 1 14.34 0.752 0.660 7.12 2 14.12 0.761 0.669 7.18 3 14.05 0.748 0.669 7.03 Average 14.17 0.7537 0.666 7.11 Deviation 0.1513 0.0066 0.0052 0.0755 Table S3 Statistical data for the photovoltaic parameters of DSSCs fabricated with NiSe/GN0.50 electrode. -2 DSSC Jsc (mA/cm ) Voc (V) FF ƞ (%) 1 16.73 0.751 0.687 8.62 2 16.53 0.739 0.686 8.38 3 16.67 0.743 0.679 8.41 Average 16.6433 0.74433 0.684 8.47 Deviation 0.1026 0.0061 0.0044 0.1308 S-3.

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