Electron transfer via organic dyes for solar conversion

Review on natural dye sensitized solar cells: Operation, materials and methods

“…Usage of blackberry extract to sensitize TiO 2 was also reported by Olea et al [120] in 1997. The black berry extract sensitized TiO 2 was reported to exhibit an increased photocurrent response attributing to excess generation of photoelectrons due to light absorption by the extract.…”

“…Though research on natural sensitizers gained attention from the year 2004, anthocyanin pigment containing natural dye based DSSC was successfully fabricated and studied by two research groups in the year 1997 [120,124]. An efficiency of about 1.02% was achieved by them by employing the extracts of blackberries, sesbania grandiflora and hibiscus rosasinesis flowers to fabricate DSSCs.…”

Dye-modified ZnO nanohybrids: optical properties of the potential solar cell nanocomposites

“…1c for ZnO-zobo. Zobo contains cyaniding-3-glucoside, which is a member of anthocyanin isolated natural dye that is equally found in blackberries [21] and red cabbage [22]. Uniformly distributed anthocyanin-dyed ZnO as seen in a well-dispersed image (Fig.…”

Advances in Liquid‐Electrolyte and Solid‐State Dye‐Sensitized Solar Cells

“…Examples of dyes that function well in DSCs are ruthenium complexes, [25] squaraines, [26] porphyrins, [27] perylenes, [28] pentacene, [29] cyanines, [30,31] coumarin, [32] and even dye extracted from black berry juice. [33] Not only does this enable the colors to be tuned to the solar spectrum to enhance light harvesting, but it also adds appeal for incorporation into the built environment. In Fig [20,21]; Process 2: Hole transfer from the oxidized dye to the organic hole-transporter (between 0.3-1 ns) [22]; Process 3: Competition with recapture of injected electrons by the oxidized dye (few hundred microseconds) [23]; Process 4: Recombination of electrons in the TiO 2 and holes in the hole-transporter (micro-to milliseconds) [24].…”