Application of cyclodextrin inclusion compound in dye sensitized solar cell materials

At present, ruthenium polypyridyl organometallic complex is widely used as dye photosensitizer, but its synthesis is complex, it is difficult to synthesize near-infrared absorption products, and the price is expensive. Organic dyes have become an important direction in the research and development of photosensitizers, and cyanogen dyes are one of the most potential organic dyes. Wang Liqiu et al. Synthesized a new photosensitizer n-p-carboxybenzyltrimethylindocyanine dye. When the dye was added into the aqueous solution containing α - CD, the cavity of α - CD would bind with the dye molecules to a certain extent, which affected the light absorption and emission of the dye molecules. The absorption intensity of the dye molecules increased in the 200-300 nm region, and decreased in the 500-600 nm region, The existence of α - CD increases the viscosity of the solution and the rigidity of the dye molecules, which is conducive to the energy release of the extranuclear electrons in the form of light, thus greatly improving the fluorescence emission intensity of the dye.