Tandem Dye-Sensitized Solar Cells Based on TCO-less Back Contact Bottom Electrodes

Fabrication of Solid‐State Dye‐Sensitized Solar Cells by Controlled Evaporation of Solvents for Creation of Facile Charge Transport Pathway

“…Various recent efforts in the scientific community have been directed to the use of ruthenium-free organic dyes, the removal of expensive transparent conductive oxides, and low-cost Pt-free catalyst for the counter electrodes. [7][8][9][10][11][12][13] The development of dyes having a wide photon harvesting range suitable for power generation designed from the perspective of molecular engineering and the use of electrolytes consisting of redox pairs with deeper redox potentials led to the achieving over 12% efficiency of DSSCs, which exceeds the efficiency of amorphous silicon. [14][15][16][17] Among the various components of a DSSC, the electrolyte provides an important role in completing the DSSC's working cycle by transporting electrons reaching the counter electrode via the DOI: 10.1002/pssa.202300116 Solid-state dye-sensitized solar cells (ss-DSSCs) based on MK-2 dye-sensitized TiO 2 photoanode and the most commonly used I À /I 3 À redox electrolyte are successfully fabricated by the simple method of solidification of the injected liquid electrolyte under slow solvent evaporation.…”

Cylindrical transparent conductive oxide-free dye-sensitized solar cells with treated flat titanium sheet

“…Tachan and his group 19 reported the effectiveness of cylindrical architecture wherein the sealing areas can be reduced up to one-third as compared to similar flat solar cells. Our group has been also working in TCO-less DSSCs for the past 7 years 20 , 21 . Learning from the TCO-less structure, we fabricated a cylindrical TCO-less DSSCs with steel use stainless (SUS) mesh as a photoanode supporter which produced 11.94 mA/cm2 short circuit current density (Jsc) with 5.58% of photoconversion efficiency (PCE) under AM 1.5 simulated solar irradiation 22 .…”

“…Our group has been also working in TCO-less DSSCs for the past 7 years. 20,21 Learning from the TCO-less structure, we fabricated a cylindrical TCO-less DSSCs with steel use stainless (SUS) mesh as a photoanode supporter which produced 11.94 mA∕cm 2 short circuit current density (Jsc) with 5.58% of photoconversion efficiency (PCE) under AM 1.5 simulated solar irradiation. 22 Nevertheless, SUS mesh required its protection with sputtering Ti over it to retard the back electron transfer.…”