Commercially available teas as possible dyes for dye-sensitized solar cells

Electrospinning a Dye-Sensitized Solar Cell

“…Here, the process was different-TiO 2 nanoparticles and dye were mixed in the solution allowing for adsorption of dye molecules on the TiO 2 nanoparticles, and the TiO 2 was fixed by embedding it in the polymer matrix instead of sintering. The reddish color visible in Figure 1c, and even clearer recognizable by eye, indicates indeed that the dyes have retained their original color in the solution, which is more pink than lilac [29]. This is different from an earlier experiment in which pure PAN nanofiber mats were dip-coated in a TiO 2 solution and afterwards dyed without a sintering step-in the latter study a strong bathochromic shift during dyeing was observed [30].…”

“…Generally, this process leads to fully conductive nanofiber mats which would produce a short-circuit if put together in the form of a DSSC [31]. However, Reference [29] also indicates that the conductivity of nonconductive PAN nanofiber mats dip-coated in PEDOT:PSS significantly depends on the number of dip-coating cycles, suggesting that a thin layer of a not too highly viscous PEDOT:PSS may sink inside the nanofiber mat and in this way possibly reduce conductivity along the upper surface. This idea is supported by the finding that the additional PAN nanofibers on top of the PAN/graphite nanofiber mat strongly protrude from the fabric, as visible in Figure 1b.…”

Performance of the dye‐sensitized solar cells fabricated using natural dyes from Ixora coccinea flowers and Cymbopogon schoenanthus leaves as sensitizers

“…These advancements also open an opportunity to design a more environmental friendly, inexpensive, biocompatible, yet lighter solar cell. 1,2 The DSSCs are a complex system which can directly convert the solar energy to electricity by sensitizing the wideband gap semiconductors. 3 The DSSC has the advantage over common silicon solar cell that they can be produced from cost-effective, nontoxic materials, thus making DSSC as the most suitable choice for dominance due to its easiness in preparation besides low in cost.…”

“…The transparent tape acts as spacer for controlling the TiO 2 film thickness. Furthermore, the TiO 2 paste was evenly spread on a cm 2…”

“…Nowadays, the innovation of solar cells led to replacing the traditional inorganic, silicon‐based solar cell by the third‐generation photovoltaic cells like the dye‐sensitized solar cells (DSSCs). These advancements also open an opportunity to design a more environmental friendly, inexpensive, biocompatible, yet lighter solar cell . The DSSCs are a complex system which can directly convert the solar energy to electricity by sensitizing the wide‐band gap semiconductors .…”