The present embodiments relate to a dye for a dye-sensitized solar cell and a dye-sensitized solar cell prepared from the same. The user interface device, according to the invention, comprises a second control unit capable of storing data and of exchanging data andor signals with said first control unit. All of this information is then sent to a remote server via the Internet. The graphene touches directly the substrate, by removing the metal from the solid solution layer by supplying an etching gas. The flow of execution in a business process test can be defined by adding control elements to the test.