Graphene nanosheets@ZnO nanorods as three-dimensional high efficient counter electrodes for dye sensitized solar cells

Potential active materials for photo-supercapacitor: A review

“…Nevertheless, the conventional photoanodic materials of the working electrode could cause corrosion under light irradiation [2]. Therefore, the focus has been switched to the utilization of transition metals such as ZnO [33], TiO 2 , and SnO 2 , which are classified as wide band gap oxide metals, in an effort to address this limitation. However, TiO 2 is only sensitive to a photon wavelength of <385 nm, which is in the ultraviolet region [34].…”

In-situ Grown Hybrid Nanocarbon Composite for Dye Sensitized Solar Cells

“…The TiO 2 electrodes were fabricated by a screen-printing method and gradually sintered at 450 C for 10 min after each printing. Then, the TiO 2 photoanodes were immersed in 0.5 mM N719 dye solution in a mixture of acetonitrile and tertbutyl alcohol (volume ratio: 1:1) at room temperature for 24 h to complete the sensitizer uptake, as described in our previous report [15,16]. The dye-sensitized TiO 2 photoanodes were subsequently washed with acetonitrile and further sandwiched with the fabricated hybrid CNTs/graphene and Pt CEs, respectively.…”

“…Among these carbon materials, particularly, one dimensional (1D) carbon nanotubes (CNTs) and two dimensional (2D) graphene attract considerable interest for electrocatalytic applications in DSSCs due to their high electrochemical stability, low resistivity and high catalytic activity [3][4][5][11][12][13][14][15][16]. Besides, compared with the Pt catalytic layer, these carbon materials with high optically transparency could be used as the transparent CE for DSSCs.…”

Influence of monomer concentration during polymerization on performance and catalytic mechanism of resultant poly(3,4-ethylenedioxythiophene) counter electrodes for dye-sensitized solar cells

“…However, the high cost, abundance deficiency, and corrosion in triiodide solution make Pt unsuitable for commercial purpose of DSSCs [3]. Therefore, many functional materials have been investigated for Pt-free counter electrodes, such as carbon materials [4], conducting polymers [5][6][7][8][9][10][11][12][13], some metal-based inorganic compounds [14][15][16][17], and composite materials [18][19][20]. As a substituted polythiophene, poly(3,4-ethylenedioxythiophene) (PEDOT) has been widely studied due to its high conductivity, electrochemical stability, catalytic ability, and easy fabrication in large scale.…”