TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Parameters: Fluorescent composite particles have a diameter of 50-500 nm and are preferably spherical or non-spherical nanoparticles of less than or equal to 500 nm in diameter. Preferred Compositions: The chromophore is covalently bound inside the inorganic oxide matrix. Inorganic oxide matrix contains silica, titania, ceria, yttria, zirconia, alumina, antimony oxide, boron oxide, tin oxide, and/or zinc oxide, preferably silica. Mass ratio of silica to chromophore is 40-100. Chromophore is an inorganic dye. Solar energy conversion device contains a device selected from III-V or II-VI PN junction device, copper-indium-gallium-selenium (CIGS) thin film device, organic sensitizer device, organic thin film device, or cadmium sulfide/cadmium telluride (CdS/CdTe) thin film device, amorphous silicon solar cell, microcrystalline silicon solar cell, polycrystalline silicon solar cell, or crystalline silicon solar cell. Preferred Process: The chromophore is embedded into an inorganic matrix using a sol gel method.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The composition contains greater than or equal to 1 chromophores. The chromophore is an organic dye, such as perylene derivative dye, benzotriazole derivative dye, diazaborinine, or benzothiadiazole derivative dye. The chromophore contains a structure of formula (I). The chromophore contains a structure of formulae (IIa)-(IIb). The chromophore is represented by formula D1-Het-(L1-Het)i-D2 (III). The chromophore is represented by formulae Het2-Ao-Het2 (IV-a) or (IV-b). The chromophore is represented by formulae Het3-Ra-Het3 (V-a) or (V-b). The chromophore is represented by formula (VI). Wavelength conversion film further contains adhesion promoter, stabilizer, crosslinking co-agent, crosslinking agent, UV absorber, antioxidant, plasticizer, solar absorber, and/or additional fluorescent chromophores.R1-R3=optionally substituted alkyl or aryl;R=alkyl, alkenyl, cycloalkyl, heteroalkyl, aryl, heteroaryl, alkoxyalkyl, heteroalkenyl, arylalkyl, heteroaryl, cycloalkenyl, cycloheteroalkyl, cycloheteroalkenyl, NH2, amido, cyclic amido, cyclic imido, alkoxy, COOH, carbonyl, ether, ketone, sulfone, and/or sulfonamide, each of which is optionally substituted, or R is optionally substituted polycyclic ring system with each ring being cycloalkyl, aryl, heterocycloalkyl, or heteroaryl;R4-R6=R, or R4 and R5, or R4 and R6, or R5 and R6, or R4 and R5 and R6, together form an optionally substituted ring or optionally substituted polycyclic ring system with each ring being cycloalkyl, aryl, heterocyclalkyl, or heteroaryl;L=alkyl, heteroalkyl, alkylene, heteroalkylene, alkynylene, arylene, and/or heteroarylene, each of which is optionally substituted;Het=group of formula (T1);i=0-100;X=-N(Ao)-, -O-, -S-, -Se-, and/or -Te-;Z=-N(Ra)-, -O-, -S-, -Se-, and/or -Te-;Ao=H or optionally substituted groups of alkyl, alkenyl, heteroalkyl, aryl, heteroaryl, NH2, amido, cyclic amido, cyclic imido, alkoxy, acyl, COOH, and/or carbonyl;Ra-Re=H or optionally substituted groups of alkyl, alkoxyalkyl, alkenyl, heteroalkyl, heteroalkenyl, aryl, arylalkyl, heteroaryl, cycloalkyl, cycloalkenyl, cycloheteroalkyl, cycloheteroalkenyl, NH2, amido, cyclic amido, cyclic imido, alkoxy, COOH, and/or carbonyl, or Ra and Rb, or Rb and Rc, or Ra and Rc, or Rd and Re, together form optionally substituted ring or optionally substituted polycyclic ring system with each ring being cycloalkyl, aryl, heterocyclyl, or heteroaryl;D1-D4=H, optionally substituted groups of alkoxy, aryloxy, acyloxy, alkyl, aryl, heteroaryl, NH2, amido, cyclic amido, and/or cyclic imido, -aryl-NR'R'', -aryl-aryl-NR'R'', and/or -heteroaryl-heteroaryl-R';R',R''=optionally substituted alkyl, alkenyl, or aryl provided that D1 and D2 are not both H and are not optionally substituted thiophene or furan;L1=optionally substituted groups of alkyl, aryl, and/or heteroaryl, NH2, amido, imido, optionally substituted alkoxy, acyl, and/or COOH provided that L1 is not optionally substituted thiophen or furan;Het2=formula (T2);D=optionally substituted Ph or aromatic heterocyclic system; andR1-R3,R4'-R6'=optionally substituted Ph, naphthyl, or heterocyclic system.    TECHNOLOGY FOCUS - POLYMERS - Preferred Compositions: Optically transparent polymer is selected from ionomer, thermoplastic polyurethane, thermoplastic polyolefin, polymethyl methacrylate, polyvinyl butyral, polydimethyl silicon, ethylene vinyl acetate, ethylene methyl methacrylate, ethylene propylene diene monomer, polyethylene, and/or modified polyethylene. Optically transparent polymer contains one host polymer, a host polymer and a co-polymer, or multiple polymers. Polymer matrix contains 0.01-3 wt.% fluorescent composite particles and 0.01-3 wt.% chromophore. The polymer matrix may be crosslinked. Preferred Parameters: Polymer matrix has refractive index of 1.4-1.7.