Effect of BaF2 powder addition on the synthesis of YAG phosphor by mechanical method

Smart Powder Processing for Excellent Advanced Materials and Its Applications

“…To decrease the synthetic temperature of solid-state reaction, the addition of BaF 2 and YF 3 was usually used as fluxes. Therefore, the authors achieved the YAG:Ce 3+ nanoparticle synthesis by applying the one-pot mechanical synthesis from Y 2 O 3 , Al 2 O 3 and CeO 2 with BaF 2 (Kanai et al, 2017) and those with YF 3 (Kanai et al, 2018). This synthesis route is very promising as a novel energy saving process.…”

“…LiCoO 2 (Kondo et al, 2014) LiMnPO 4 (Yoshida et al, 2013) LiFePO 4 (Kozawa et al, 2014a; LiCoPO 4 (Matsuoka et al, 2017) LiNi 0.5 Mn 1.5 O 4 (Kozawa et al, 2014b; Li-ion battery La 0.8 Sr 0.2 MnO 3 (LSM) (Chaichanawong et al, 2006) La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (Xi et al, 2015) Fuel cell (SOFC) Y 2.97 Al 5 O 12 :Ce 3+ 0.03 (Kanai et al, 2017; Phosphor for LED starting material of LiFePO 4 cathode is designed as shown in Fig. 10 ( Kozawa et al, 2014a).…”

Rapid synthesis of YAG phosphor by facile mechanical method

“…[13][14][15][16] Furthermore, synthesis of YAG:Ce 3+ was also achieved with addition of BaF 2 or YF 3 powder as a flux. 17,18 However, after addition of such flux materials, washing processes using acids are required to remove the elements of the flux materials. Therefore, mechanical synthesis of YAG with no flux should be developed for further processing improvements.…”

“…8,9 Therefore, higher mechanical energy may be effective for achieving the synthesis of YAG without any fluxes. 17,18 The second approach was to select Al(OH) 3 as raw material. According to the reports of mechanochemical reaction, [19][20][21] metal hydroxides induce the acid-base reaction and the formation of Me-O-Me' bonding between the surfaces of metal hydroxides, and the other metal oxides.…”

The effect of BaF2 concentration and particle size distribution on the luminescence efficiency of YAG:Ce3+ phosphors

“…The usage of BaF 2 flux decreases of phosphor synthesis temperature, which as a result can significantly reduce power consumption and cost of phosphors production [18,19]. The addition of flux creates wetted microdomains, which will improve mass diffusion and accelerate solid-state reactions [20].…”