An LED luminaire has a dye-sensitized solar cell for converting light emitted from a light source to electric energy and uses the converted electric energy. For example, in one embodiment, a method of embedding auxiliary information in data is provided. The coating material has chemical compounds or ligands with functional groups or moieties with conjugated electrons and moieties for imparting solubility to coated fluorescent nanocrystals in aqueous solutions. These more demanding, wider isolation trenches are lined with a high quality grown oxide as part of the process for achieving the desired result of high quality isolation. The existing transponder in the aircraft can be removed thereby leaving an opening in the aircraft and the transponder installed in the opening.