TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The inorganic material is selected from a mineral, metal, oxide, sulfide, phosphate, and/or silicate. The inorganic material comprises or is constituted from a material selected from silica, mica, metal, metal oxide, metal sulfide, metal phosphosphate, metal manganate, matal carbonate, and metal titanate; and a material selected from aluminum, titanium, zirconium, iron, tin, gold, silver, copper, brass, cobalt, niobium, vanadium, tantalum and chromium, and any oxides and/or sulfides of it (preferably Ag2O, AlTiO3, BaTiO3, BiO3, CdO, CdFe2O4, Ce2O3, CuO, Cu2O, CuTiO3, FeO, Fe2O3, Fe3O4, FeOOH, FeTiO3, Ga2O3, HgO, Hg2Nb2O7, Hg2Ta2O7, In2O3, KNbO3, KTaO3, La2O3, LaTi2O7, LiNbO3, LiTaO3, MgTiO3, MnO, MnO2, MnTiO3, Nb2O5, Nd2O3, NiO, NiTiO3, PbO, PbFe12O19, PdO, Pr2O3, Sb2O3, Sm2O3, SnO, SnO2, SrTiO3, Ta2O5, Tb2O3, TiO2, Ti2O3, V2O5, WO3, Yb2O3, YFeO3, ZnO, ZnTiO3, ZrO2, Ag2S, AgAsS2, AgSbS2, As2S3, CdS, Ce2S3, CoS, CoS2, CoAsS, CuS, Cu2S, CuS2, Cu3AsS4, , CuFeS2, Cu5FeS4, CuInS2, CuIn5S8, Dy2S3, FeS, FeS2, Fe3S4, FeAsS, Gd2S3, HfS2, HgS, HgSb4S8, In2S3, La2S3, MnS, MnS2, MoS2, Nd2S3, NiS, NiS2, OsS2, PbS, Pb10Ag3, Sb11S28, Pb2As2S5, PbCuSbS3, Pb5Sn3Sb2S14, Pr2S3, PtS2, Rh2S3, RuS2, Sb2S3, Sm2S3, SnS, SnS2, Tb2S3, TiS2, TiAsS2, WS2, ZnS, ZnS2, Zn3In2S6 or ZrS2). Preferred Compound: The organic substituent of compound (I) is a hydrocarbon comprising 1-70 carbons and 0-50 non-metal heteroatoms; and where the organometallic substituent of compound (I) is a hydrocarbon comprising 1-70 carbons, 0-50 non-metal heteroatoms and 1-10 metal atoms. The compound (I) is selected from a sensitizing dye, a coadsorbent compound, and a ligand of a sensitizing dye. Preferred Definitions:    R1 and R2=aryl or alkyl (both optionally substituted), alkynyl (substituted with optionally substituted aryl, where aryl may comprise at least one heteroatom) (where substituents may be selected from alkyl, alkenyl, alkynyl, aryl, or amine which all comprise at least one heteroatom, and where amine may comprise at least one heteroatom in addition to the nitrogen atom of the amine group, where all of the alkyl, alkenyl, alkenyl, aryl or amine substituents may be substituted with at least one of alkyl, alkenyl, alkynyl, or aryl, which all optionally comprises at least one heteroatom) or alkenyl.    EXAMPLE - No suitable example is given.