L’invention concerne une nouvelle cellule Graetzel (ou DSSC: une cellule solaire sensibilisée par un colorant) dotée d’un système de remplissage à la fois de. WOLFBAUER G ET AL: “A channel flow cell system specifically designed to test the efficiency of redox shuttles in dye sensitized solar cells”, SOLAR ENERGY. In , chemist Michael Graetzel of the Swiss Federal Institute of Technology in Lausanne invented so-called dye-sensitized solar cells.
|Published (Last):||6 February 2015|
|PDF File Size:||14.20 Mb|
|ePub File Size:||5.25 Mb|
|Price:||Free* [*Free Regsitration Required]|
Northwestern University researchers announced  a solution to a primary problem of DSSCs, that of difficulties in using and containing the liquid electrolyte and the consequent relatively short useful life of the device.
Researchers have found that using dyes comprising a perylenemonoimide PMI as the acceptor and an oligothiophene coupled to triphenylamine as the donor greatly improve the performance of p-DSC by reducing charge recombination rate following dye-sensitized hole injection.
Wayne Campbell at Massey UniversityNew Zealand, has experimented with a wide variety of organic dyes based on porphyrin. Houseplant with hint of rabbit purifies indoor air Dec. On top is a transparent anode made of fluoride-doped tin dioxide SnO 2: A1 Designated state s: A group of researchers at Georgia Tech made dye-sensitized solar cells with a higher effective surface area by wrapping the cells around a quartz optical fiber.
During the last 5—10 years, a new kind of DSSC has been developed — the solid state dye-sensitized solar cell.
Inchemist Michael Graetzel of the Swiss Federal Institute of Technology in Lausanne invented so-called dye-sensitized solar cells DSSCs that work best in dim light and are cheaper than the graezel semiconductors.
Retrieved on 26 July This reaction occurs quite quickly compared to the time that it takes for the injected electron to recombine with the oxidized dye molecule, preventing this recombination reaction that would effectively short-circuit the solar cell.
HU Free format text: MC Free format text: That means slow-moving holes have less distance to travel before reaching the negative electrode. SK Free format text: These devices cellkle collect light at the tips, but future fiber cells could be made to absorb light along the entire length of the fiber, which would require a coating that is conductive as well as transparent.
The first successful solid-hybrid dye-sensitized solar cells were reported. FI Free format text: The use of the amphiphilic Z dye in conjunction with the polymer gel electrolyte in DSC achieved an energy conversion efficiency of 6. Dyesol Director Gordon Thompson said, “The materials developed during this joint collaboration have the potential to significantly advance the commercialisation of DSC in a range of applications where performance and stability are essential requirements.
Diffusion of the oxidized form of the shuttle to the counter electrode completes the circuit. The solar cells could one day lead to device covers that continually recharge gadgets without ever having to plug them in.
This makes DSSCs attractive as a replacement for existing technologies in “low density” applications like rooftop solar collectors, where the mechanical robustness and light weight of the glass-less collector is a major advantage. The wide spectral response results in the dye having a deep brown-black color, and is referred to simply as “black dye”.
A standard tandem cell consists of one n-DSC and one p-DSC in a simple sandwich configuration with an intermediate electrolyte layer. RO Free format text: In theory, given low rates of production, the high-energy electron in the grartzel could re-combine with its own hole, giving off a photon or other form of energy which does not result in current being generated.
The cutoff is so low they are even being proposed for indoor use, collecting energy for small devices from the lights in the house.
ES Free format text: Over the last decade an extensive research program has been carried out to address these concerns. In general terms the types of celllue suitable for rooftop deployment have not changed significantly in efficiency, although costs have dropped somewhat due to increased supply.