Near infrared luminescence properties of nanohybrid film prepared from LaPO4:Er3+/LaPO4 core/shell nanoparticles and silica-based resin

作者：Lim Mi Ae; Il Seok Sang^*; Chung Woon Jin; Hong Suk In

来源：Optical Materials, 2008, 31(2): 201-205.

DOI：10.1016/j.optmat.2008.03.009

• LaPO4:Er3+/LaPO4 core/shell nanoparticles
• Non-hydrolytic sol-gel
• Inorganic-organic nanohybrids
• Luminescent properties

LaPO4:Er3+ and LaPO4:Er3+/LaPO4 core/shell nanoparticles were synthesized in a high-boiling mixture solution of tributyl phosphate, trihexylamine and diphenylether. LaPO4:Er3+ nanoparticles of a spherical shape with a mean diameter of 5.0 nm were formed, while LaPO4:Er3+/LaPO4 core/shell nanoparticles resulted in an increase of the average size of nanoparticles (9.0 nm). The homogeneous inorganic-organic nanohybrid materials including LaPO4:Er3+ and LaPO4:Er3+/LaPO4 core/shell nanoparticles were prepared by dispersing the nanoparticles into the silica-based resin, which was synthesized by non-hydrolytic sol-gel method from (3-glycidyloxypropyl) trimethoxysilane (GPS), diphenylsilanediol (DPSD) and phenyltrimethoxysilane (FITS). The highly visible transparent films of crack-free thick thickness were fabricated by a single step spin-coating from the nanohybrid materials. The films containing LaPO4:Er3+/LaPO4 core/ shell particles showed the enhanced emission intensity and lifetime compared to those with LaPO4:Er3+.

• 出版日期2008-12