Charge Generation in a Dye-Sensitized Solid-State Cell under Different Modes of Illumination

Preparation and Characterization of Nanocrystalline CuS Thin Films for Dye-Sensitized Solar cells

“…The power conversion value for similar type of dye-substituted photovoltaic device in presence of C 60 [38], for dye-sensitized ZnS cell [39], is low when compared with our value reported here. However, photo properties of this device are not comparable with other sensitized solid-state devices [40][41][42]. Poor performance of this may be due to inefficient charge separation at the photo electrode-electrolyte interface, or the photo-generated electrons may leak out into the electrolyte instead of flowing through the external circuit results in low fill factor.…”

Progress in dye‐sensitized solid state solar cells

“…In addition, current generation also could be expected via band gap excitation of semiconductor in this type of cells, where dye molecules act as a mediator for electrons [9]. De-excitation of excited dye molecules to their ground state, recombination of photogenerated carriers mediated by traps at the interface becomes major loss mechanism of NDP type cells.…”

“…The absorption of visible light by these wide-band gap semiconductors is rather poor and requires a colored pigment (or dye) at least attached to one semiconductor film to enhance the absorption in the visible range. Several natural pigments (cyanidin, tannin, red sandal wood, ascorbic acid) [5][6][7][8], synthesized dyes (metal centered ruthenium dyes, pyrogallol red, mercurochrome, indoline dyes) [9][10][11][12], conjugated polymers [poly[2-methoxy-5(2-ethyl-hexyloxy)-p-phenylene vinylenel (MEH-PPV), poly(3-thio-phenylene acetic acid)] [13,14] and low band gap semiconductor (selenium) [15] have been identified as suitable sensitizers for fabricating NDP type solar cells. The used sensitizers and pigments have their own chromophores together with hydroxyl or carboxylic groups that helps to bond on the oxide semiconductors.…”

Optical properties of Poly-[2-methoxy-5-(2-ethyl-hexyloxy)-phenylene vinylene and its application in photovoltaic cells

“…Meso-porous TiO 2 films with thickness of ~ 10 µm were prepared by applying a colloidal solution of hydrolyzed titanium isopropoxide which contains TiO 2 powder (P-25 Degussa, Japan) on preheated conducting glass plates (FTO) as descried elsewhere [6].…”

“…This result suggests that enrolment of MEH-PPV layer as an efficient electron donor in the regeneration of dye molecules. However, TiO 2 |N3|MEH-PPV|I 2 |graphite cell produces moderate photo-performance compared to other dye sensitized systems [6] and much higher performance than other solar cells composed of polymer hole-conducting layer [17]. Photo-properties of hetero-junctions made of polymer-TiO 2 composites or blends have been reported.…”