We dissolved the sensitizer Palladium (II) tetraphenylporphyrin (PdTPP) and emitter 9, 10-Diphenylanthracene (DPA) in toluene and prepared O/W microemulsion with water and Tween 20. Moreover, the O/W microemulsion were embedded into Polydimethylsiloxane (PDMS) resin to fabricate solid-state Triplet-triplet annihilation up-conversion (TTA-UC) materials. Under the simulation of a semiconductor laser (532 nm, 70 mW cm-2), PDMS TTA-UC materials revealed strong blue emission. The efficiency of solid-state TTA-UC can be 22% in the maximum. In the application measurement, three-electrode system obtained photoelectric current of 0.9 μA irradiated by UC emission from PDMS TTA-UC, which demonstrated that the photoelectric current was derived from the UC emission irradiation and ZnCdS membrane. In another case, remarkable degradation phenomenon of rhodamine B was observed under the condition of irradiation of UC emission from PDMS TTA-UC materials and existence of Pt/WO3. The maximum of the photo-catalysis efficiency can be 82.3%.