NOVELTY - The method involves injecting solutions comprising different dyes along with cosorbents through holes in electrodes optionally under vacuum. An electrolyte is injected or pumped through the holes in the electrodes. The holes are sealed in the electrodes with glue or with thermoplastic polymer. An external connection is provided between the electrodes for electron transport. Dyeing is carried out between sealed electrodes at temperature ranging between 10 to 70 degrees Celsius and completed in 10 minutes, where dye solutions are introduced between the sealed electrodes.    USE - Method for preparing dye sensitized solar cells i.e. tandem solar cells, with multiple dyes such as ruthenium bipyridyl complexes, ruthenium terpyridyl complexes, coumarins, phthalocyamines, squaraines, indolines or triarylamine dyes (all claimed).    ADVANTAGE - The method enables reducing the amount of time necessary to dye the metal oxide. The method enables reducing the amount of time necessary to prepare dye sensitized solar cells. The method enables preparing solar panels in an effective manner. The method enables rapidly sensitizing the metal oxide with more than one dye in order to extend the spectral response of the device as widely as possible across the electromagnetic spectrum. The method enables adding cosorbents to prevent dye aggregation and/or to improve the open circuit voltage by reducing recombination processes and/or varying the metal oxide conduction band edge to higher or lower potentials and/or to enhance electron lifetime in the titanium oxide and/or to help buffer the dye solution, which aids chemisorption of the dye. The method enables providing dye-sensitized solar cells that can offer long-term stability.    DETAILED DESCRIPTION - The cosorbents are selected from tertiary butyl pyridine and/or a pH buffer and/or chenodeoxycholic acid. INDEPENDENT CLAIMS are also included for the following:    (1) a solar panel comprising dye sensitized solar cells    (2) a dye for increasing light absorbance across electromagnetic spectrum of dye sensitized solar cells.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a cocktail dyed solar cell using two different dyes.