Study on Preparation of RGB Tricolor Up-Conversion Fluorescent Powder
For producing RGB tricolor luminescence, three kinds of components of rare-earth ions is chosen, which are Er3+ doping, Er3+-Yb3+ co-doping and Tm3+-Yb3+ co-doping, respectively. Three kinds of rare-earth doped up-conversion fluoride material are prepared based on high temperature solid-state method. Under being excited by 980nm laser, three materials emit red, green and blue light, whose peak wavelengths are 660nm, 550nm and 480nm, respectively. Through analysis of luminescence process, it can be concluded that red and green luminescence are belong to two-photon absorption transversion, and blue luminescence is three-photon absorption transversion.
Z.S. Liu, L.P. Xu, X.D. Liang, Z.H. Wang and H.M. Zhang
C. H. Niu et al., "Study on Preparation of RGB Tricolor Up-Conversion Fluorescent Powder", Advanced Materials Research, Vol. 1015, pp. 566-569, 2014