Co-sensitization of natural and low-cost dyes for efficient panchromatic light-harvesting using dye-sensitized solar cells

Efficiency and stability improvement of natural dye‐sensitized solar cells using the electrospun composite of TiO 2 nanofibres doped by the bio‐Ca nanoparticles

“…This superiority could be due to the higher BET surface area and the relatively smaller average diameter observed for bio‐Ca‐doped TiO 2 nanofibres, which improved dye‐loading and electrolyte accessibility on the semiconductor surface and channeled electron transport respectively. In addition, the appropriate LUMO and HOMO levels of the treated cocktail could positively affect the photoexcitation process, electron injection, and dye regeneration, thereby ensuring high DSSCs performance 4 . Besides, the high photocatalytic activity of the anatase phase degrades the natural pigments used in DSSCs.…”

“…In addition, the appropriate LUMO and HOMO levels of the treated cocktail could positively affect the photoexcitation process, electron injection, and dye regeneration, thereby ensuring high DSSCs performance. 4 Besides, the high photocatalytic activity of the anatase phase degrades the natural pigments used in DSSCs. Sunlight exposure activates the photocatalytic activity of the TiO 2 anatase phase, whereby produces free electrons on the TiO 2 surface.…”

“…Then, a facile and effective single‐step approach was employed to fabricate efficient TiO 2 nanofibres‐based DSSCs without the nanofibre layers undergoing multiple cracks upon sintering. Co‐sensitization was successfully employed as an efficient method to boost the light absorption ability of natural dye‐sensitized solar cells (NDSSCs) by combining two judiciously selected pigments with complementary absorption 4 . Besides, the natural dyes were extracted employing microwave and under optimum conditions presented previously 3,4 .…”

Influence of the pH of anthocyanins on the efficiency of dye sensitized solar cells

“…With chlorophyl alone as a sensitizer, the solar cell efficiency was 0.7%. Golshan and colleagues investigated the effect of cosensitization in dye-sensitized solar cells using dye extracts from Malva verticillate and Syzygium cumini [ 14 ]. The solar cells obtained had efficiencies of 0.05% and 0.03% for Malva verticillate and Syzygium cumini, respectively.…”

An optimal molecule-matching co-sensitization system for the improvement of photovoltaic performances of DSSCs

“…2 Among various photovoltaic technologies (i.e., dye-sensitized solar cells (DSSCs), organic solar cells (OSC), perovskite solar cells (PSCs) and quantum dot solar cells (QDSC)), DSSCs have become an effective alternative to dominant silicon-based solar cells due to the flexibility in molecular design, ease of fabrication and low production costs. [3][4][5] Typical DSSCs are generally composed of three components, namely dye-sensitized mesoporous metal oxides (e.g., TiO 2 , ZnO or SnO 2 ) as the working electrode, precious metal platinum as the counter electrode and redox electrolyte. 6,7 Here, sensitizers, including dyes and co-sensitizers, play vital roles in harvesting sunlight and injecting photoexcited electrons into the conduction band (CB) of metal oxides.…”