Efficient iodine-free dye-sensitized solar cells employing truxene-based organic dyes

Abstract

Two new truxene-based organic sensitizers (M15 and M16) featuring high extinction coefficients were synthesized for dye-sensitized solar cells employing cobalt electrolyte. The M16-sensitized device displays a 7.6% efficiency at an irradiation of AM1.5 full sunlight.

Molecular engineering of carbazole-fluorene sensitizers for high open-circuit voltage DSSCs: Synthesis and performance comparison with iodine and cobalt electrolytes

“…corresponding overall photovoltaic data are given in Table 2. is higher than many of those reported for triarylamine [23,[29][30] or truxene [31,32] dyes in the presence of cobalt-based electrolyte and very close to that described for the C220 dye [33] which is one of the most efficient organic dyes reported so far in DSSCs. However, for each dye, the current density of thin-film devices including cobalt-based electrolytes remained lower than those measured for devices fabricated with Z960 electrolyte.…”

A cascaded QSAR model for efficient prediction of overall power conversion efficiency of all-organic dye-sensitized solar cells

“…Five descriptors (11,13,14,16,18) calculated by 631G are retained by more than four feature selection methods for J SC . Likewise, eight descriptors (4,9,13,16,19,24,26,31) for V OC , seven descriptors (3,4,7,12,13,16,26) for FF, and ten descriptors (4,6,7,9,14,15,18,20,24,25) for PCE are also retained by more than four feature selection methods. Although the selected descriptors based on STO and 631G are different, the most important molecular descriptors, such as descriptors (18) for J SC , (4,16,24) for V OC , (3,16) for FF and (9) for PCE are retained by most of the feature selection methods for both 631G and STO calculations.…”

High electro-catalytic counter electrode based on three-dimensional conductive grid for dye-sensitized solar cell

“…So far, the best cell conversion efficiency is 12.3% [1]. In addition to the reduction of recombination loss in photoanode [2][3][4], the extensive absorption of visible light [5][6][7], the electro-catalytic ability of counter electrode (CE) [8,9] is also very important to increase the cell efficiency, because the regeneration rate of electrolyte in reduction state is decisive.…”