Direct Synthesis of K2SiF6:Mn4 Red Phosphor from Crushed Quartz Schist by Wet Chemical Etching

作者：Adachi Sadao^*; Takahashi Toru

来源：Electrochemical and Solid-State Letters, 2009, 12(2): J20-J23.

DOI：10.1149/1.3039192

• etching
• particle size
• phosphors
• photoluminescence
• potassium compounds
• silicon compounds

A simple method of synthesizing red phosphor K2SiF6:Mn4 is demonstrated. This method uses wet chemical etching of crushed quartz schist (QS) in a HF/KMnO4 solution. The synthesized phosphor has particle sizes of less than 10 mu m with porouslike morphology. The photoluminescence and photoluminescence excitation spectroscopy show no clear difference in the spectral feature between the crushed QS-synthesized phosphor and that from single-crystalline Si wafers.

• 出版日期2009