A red phosphor, K2SiF6:Mn4+, was prepared by the hydrothermal method. The as-obtained K2SiF6 confirmed as cubic phase. In K2SiF6:Mn4+ strongest excitation peak lies in 350 nm and emission 632 which is due to 2Eg→4A2g transition. optimum luminescence conditions were obtained changing Mn4+ doping concentration. Employing with blue chip commercial yellow phosphor fabricates a white-light LED. asob...

This application claims an invention which was disclosed in Provisional Application Number 60/108,100, filed November 12, 1998, entitled "Desktop Projector". The benefit under 35 USC §119(e) of the United States provisional application is hereby claimed.. 5 This application is also a continuation-in-part of Serial No. 09/323,651, filed June 1, 1999, which is also a PCT International Application...

A comprehensive investigation of a chromium-doped near-infrared fluoride phosphor with desired anti-thermal quenching behavior.

A new phosphor particle streak velocimetry (phosphor-PSV) diagnostic with high spatial resolution was recently demonstrated (Fan et al. in Opt Lett 46:641, 2021), where individual particles, excited by a short pulse laser, form streaks as results of their displacement the flow during relatively long luminescence decay. The local velocity is derived fitting each two-dimensional linearly-moving p...