Fluorescence Properties of P-doped Si Composite Microparticles

Light-emitting diodes (LEDs) have been used as the cleanest light source in the world because they have benefi cial features such as lower power consumption, high luminescence effi ciency, and a prolonged emission lifetime. However, a serious issue must be confronted:these commercially available fl uorescence materials contain rare metals. In order to overcome such an issue, we have developed phosphorus (P)doped silicon (Si) composite microparticles (P/Si-MPs) as novel fl uorescence materials. The MPs have excellent advantages, such as higheffi ciency fl uorescence and long-term photostability;surface oxidation can also control the fl uorescence color. In this paper, we suggest a new synthetic approach and discuss the fl uorescence properties of P/Si-MPs.