Qu Chang-nan, Changchun Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, developed a carbon red spot fluorescence quantum efficiency of 46% of carbon nano-dots, the highest international value. Related results recently published in "advanced materials." Luminescent carbon nano dots is a new type of nano luminescent material that has emerged in recent ten years, arousing wide attention in the world. The bottleneck in the development of this field is the lack of means to regulate the emission band gap of carbon nano dots and the method to enhance the fluorescence quantum efficiency. Currently, carbon nanodots have achieved more efficient luminescence in the blue and green bands, but in the long wavelength band of the visible region, especially in the orange to red band, there is a lack of highly efficient luminescent carbon nanodots. Qu Songnan research group to further develop the regulation of carbon nanodots luminous bandgap method, by regulating the degree of polycondensation of urea and citric acid assembly to DMF solvent solvent heat reaction, so that the carbon nanodots absorption band expanded to green In the optical band, fluorescence emission of carbon nanofluorescence was achieved at a fluorescence quantum efficiency of 46% in the orange red band through further metal cation passivation surface defect state treatment. Researchers to the carbon nano-point and starch complex, developed based on the carbon nano dot orange-red phosphor, and in order to achieve based on carbon nano-point warm white LED lighting devices. Skived Fin Heat Sink,Skived Fin,Skived Heat Sinks,Skiving Heat Sink Suzhou Wint Electric Co., Ltd , https://www.winforthermal.com