Efficient Luminescence Enhancement of Mg2TiO4:Mn4+ Red Phosphor by Incorporating Plasmonic Ag@SiO2 Nanoparticles

• DOI: 10.1021/acsami.9b05781
• Publication Date: 2019-05-10T19:06:13Z
• Authors: Leonid Dolgov; Junyu Hong; Lei Zhou; Xiaohui Li; Junhao Li; Vesna Djordjevic; Miroslav Dramicanin; Jianxin Shi; Mingmei Wu
• Keywords: Persistent luminescence

One of prospective ways for boosting efficiency luminescent materials is their combination with noble metal nanoparticles. Collective, so-called plasmon, oscillations surface electrons in a nanoparticle can resonantly interact incident or fluorescent light and cause an increase the absorption cross section radiative rate adjacent emitter. Plasmonic inorganic phosphors require gentle host crystallization at which added nanoparticles will not suffer from aggregation oxidation. The plasmonic Mg2TiO4:Mn4+ phosphor containing core@shell Ag@SiO2 prepared here by spare low-temperature annealing sol-gel precursor. It revealed that Mn4+ luminescence nonmonotonously depends on size concentration 40 70 nm silver demonstrated be up to 1.5 times when excitation supported localized plasmon resonance