Optimizing room temperature binder free TiO ₂ paste for high efficiency flexible polymer dye sensitized solar cells

Abstract

Binder free TiO2 paste is prepared using tert-butyl alcohol in dilute acidic conditions at room temperature for flexible polymer dye sensitized solar cells (DSSC). The present paper reports the detailed studies carried out to elucidate the importance of stirring times during the paste preparation on the final device performance. The maximum conversion efficiency of 4.2 % was obtained for flexible DSSCs fabricated on ITO/PEN substrates using TiO2 paste prepared from an optimum stirring time of 8 hours. The effect of optimum stirring times on the device characteristics has been understood in terms of the detailed morphology and surface area measurements.

TiO2-Graphene Quantum Dots Nanocomposites for Photocatalysis in Energy and Biomedical Applications

“…Moreover, the cascaded energy levels between N-GQDs and N-719 facilitate electron transfer from lowest unoccupied molecular orbital (LUMO) energy into the conduction band of TiO 2 , resulting in higher DSSC performance. [96,102,[143][144][145][146]. The enhancement is due to the improved light absorption intensity and efficient charge separation offered by GQD nanoparticles.…”

Chemical sintering by chlorinated carbon compounds for flexible photoanodes of dye-sensitized photovoltaic cells

“…5,6 Therefore, it is essential to develop an effective strategy to prepare well-interconnected m-TiO 2 lms with high mechanical strength and strong adhesion to the substrate under low-temperature sintering conditions for high-efficiency exible photoanodes. Various methods have been suggested for the fabrication of exible TiO 2 photoanodes under low-temperature processing conditions such as electrophoretic deposition, [7][8][9] spray deposition, [10][11][12][13][14] chemical vapor deposition, 15 pulsed laser annealing, 16 light annealing, 17,18 heat sink assisted annealing, 19,20 mechanical compression, [21][22][23][24] lioff transfer, 25,26 and chemical sintering. [27][28][29][30][31][32][33][34][35][36] Among these approaches, the chemical sintering method is shown to be more promising for the fabrication of low-temperature sintered exible TiO 2 photoanodes with a high thickness (>10 mm), strong adhesion, and improved interparticle connection.…”

Lithium Incorporation into TiO2 Photoanode for Performance Enhancement of Dye-Sensitized Solar Cells

“…The commercial capability of photovoltaic technology to replace current silicon solar cells depends on three crucial aspects: performance, cost, and lifetime. Dye-sensitized solar cells (DSSCs) are attractive photovoltaic devices that are analogous to silicon solar cells owing to their low cost, ease of fabrication, and relatively high power conversion efficiency (PCE). − A standard DSSC contains a photoanode, a dye, an electrolyte, and a counter electrode (CE). − TiO 2 , ZnO, SnO 2 , Nb 2 O 5 , and SrTiO 3 are extensively used as photoanodes in DSSCs. − Anatase mesoporous titanium oxide (TiO 2 ) on fluorine-doped tin oxide (FTO) glass substrates is the most widely used photoanode in DSSCs. Pt is used as a CE, and an iodide/tri-iodide (I – /I 3 – ) redox couple is mostly used as the liquid electrolyte in conventional DSSCs .…”