光致變色金屬錯合物與智慧型染料敏化太陽能電池之應用(2/2)

Photochromic materials are smart compounds capable of changing color upon photoexcitation.Numerous photoswitchable organic and inorganic molecules have been developed for various applications. However, the photochromic organic compounds devoted to photovoltaic (PV) devices are rare. On the other hand, most of the metal complexes incorporating photoresponsive moieties or sulfoxide ligands were studied only in solution to focus on the photoinduced isomerization mechanism, quantum efficiency, optical properties and electron/energy transfer dynamics. Since the photochromic metal complexes for PV applications have never been reported, this project aims at designing and synthesizing a new family of photochromic ruthenium(II) and osmium(II) complexes for dye-sensitized solar cell (DSC) applications. The principal objective of the project is to demonstrate that the new family of photochromic metal complexes can advantageously replace conventional polypyridyl ruthenium(II)and osmium(II) dyes applied in DSCs to ultimately realize smart and semi-transparent PV devices displaying self-adjustable optical transmission with irradiation. Moreover, fundamental studies on the photochromism (isomerization rate, quantum efficiency, mechanism and the variation in optical properties) for the new photochromic metal complexes will be done, not only for presenting new scientific findings but also for providing new clues to the molecular design of photochromic metal complexes for various thin film applications.