Implication of color of sensitizing dyes on transparency and efficiency of transparent dye-sensitized solar cells

Controlling the TiO2–Dye Nanomolecular Interactions for Improving the Photoconversion in Transparent Dye‐Sensitized Solar Cells

“…[ 24,25 ] It has been reported in our previous work that a 10 μm thick TiO 2 layer is the optimum value for better performance (efficiency and transparency) of devices and in this work, the same thickness of the TiO 2 was utilized. [ 7 ]…”

“…It is known that dye‐loading time also plays an important role in adsorbing sufficient and effective amounts of dye molecules to enhance the PCE of DSSCs. [ 7 ] Moreover, dye‐loading time is also responsible owing to the replacement of the weakly bound dye on TiO 2 nanoparticle by another having strong binding strength. [ 31 ] Therefore, after complete adsorption of the primary sensitizer (SQ‐140) on the TiO 2 layer, it was dipped in the solution of the secondary sensitizer (D‐131) for different time intervals to optimize the condition for sequential dye adsorption giving the best PCE.…”

“…Iodine‐based redox electrolyte consisted of iodine (50 mM), lithium iodide (100 mM), t‐butylpyridine (0.5 m ), and 1,2‐dimethyl‐3‐propyl‐imidazolium iodide (0.6 m ) in acetonitrile was filled in between the working and counter electrode to complete the DSSC. [ 7 ] For assembling the cells, a 25 μm thick hot melt spacer (Meltonix 1170‐25) was purchased from Solaronix and at the end for sealing properly, UV curable resin (TB3017B, ThreeBond, Japan) was used. For the measurement of absorption spectra in solution as well as in solid‐state for thin films adsorbed on transparent TiO 2 , a UV/visible–NIR spectrophotometer (JASCO V‐570) was used.…”

A promising small-sized near-infrared absorbing zwitterionic dye for DSSC and NLO applications: DFT and TD-DFT approaches

“…2,[35][36][37][38][39][40] Out of these, zwitterionic dyes showed broad range absorption ranging from the ultraviolet (UV) to visible (Vis) to near-infrared (NIR) region. [36][37][38][39][40][41][42][43][44][45] Squarylium dyes are one of the examples of a zwitterionic class of dyes investigated extensively in DSSCs. [41][42][43][44][45] Again, these dyes use different metal-containing dyes as cocktail dye counterparts in the co-sensitization method.…”

“…[36][37][38][39][40][41][42][43][44][45] Squarylium dyes are one of the examples of a zwitterionic class of dyes investigated extensively in DSSCs. [41][42][43][44][45] Again, these dyes use different metal-containing dyes as cocktail dye counterparts in the co-sensitization method. 46 In contrast, quinonoid zwitterionic dyes reported by Siri et al also show comparatively better absorption properties [36][37][38][39][40] and can bind with TiO 2 through one of its oxygen atoms.…”