Worm-like mesoporous TiO2 thin films templated using comb copolymer for dye-sensitized solar cells with polymer electrolyte

New D–π–A dyes incorporating dithieno[3,2-b:2′,3′-d]pyrrole (DTP)-based π-spacers for efficient dye-sensitized solar cells

“…In order to further study the relationship between dye structures and device performances, the charge density (d n ) at open circuit and the electron lifetime (s) as a function of charge density were measured by controlled intensity modulated photovoltage spectroscopy (IMVS). [38][39][40] The results indicate that the introduction of 10-phenyl-10H-phenothiazine and truxene onto DTP spacers of JW1 and JW2 is benet to enhance the photovoltaic performances of DSSCs by more efficiently reduce electron recombination, as compared to the introduction of 4hexyloxyphenyl onto DTP spacers of JW3. As shown in Fig.…”

Substrate-independent three-dimensional polymer nanosheets induced by solution casting

“…[8][9][10][11][12][13] The structure of inorganic materials has been controlled via a range of methods, such as hydrothermal, electrochemical, template mediated calcination, solvothermal, microwave, and exfoliation. [14][15][16][17][18][19] The resulting single and multi-dimensional structures have fascinating properties, and consequently, several studies have been conducted with the goal of synthesizing structures with larger specic surface area, superior activity, and higher porosity. Nanostructured materials with high aspect-ratio have garnered great attention lately, which are ultrathin materials with high crystal growth and stacked layers.…”

In Situ Formation of Continuous Charge Transfer Pathways for Highly Efficient, Solvent-Free, Polymer Electrolyte-Based Dye-Sensitized Solar Cells

“…Consequently, the average coil size of the PEO and PVDF is approximately 49 and 27 nm, respectively. It is obvious that the infiltration of these polymers is difficult, because the average pore size of TiO 2 films in typical DSSCs is always less than 25 nm. − Therefore, it is challenging to infiltrate a polymer electrolyte from top (outside surface) to bottom (TiO 2 /substrate interface) of the porous films. − Considering the fact that the light intensity incident on the bottom region is much higher than that on the top region of the TiO 2 film, the inaccessibility of electrolytes to the bottom TiO 2 region has an absolutely detrimental effect on the overall photovoltaic performance of the DSSCs. , To facilitate infiltration, a couple of methods have been proposed to increase the pore size in the traditional nanoporous films, such as plasma treatment, , hybrid structures, − microbeads fabricated by wet chemistry, − and colloidal crystal template. − By manipulating the microstructures of the TiO 2 films, the filling ratio has been improved. , However, a further improvement of the infiltration effect is still necessary.…”