Luminescent properties of rare earth (Er, Yb) doped yttrium aluminium garnet thin films and bulk samples synthesised by an aqueous sol-gel technique

作者：Garskaite Edita; Lindgren Mikael; Einarsrud Mari Ann; Grande Tor^*

来源：Journal of the European Ceramic Society, 2010, 30(7): 1707-1715.

DOI：10.1016/j.jeurceramsoc.2010.01.001

• YAG
• Sol-gel process
• Films
• Optical properties

Yttrium aluminium garnet (YAG) powders and thin films deposited on silicon substrates were prepared by an aqueous sot-gel route using metal nitrates The sol-gel process resulted in an amorphous gel, and the thermal decomposition and successive crystallization were characterized by thermal analysis and X-ray diffraction Powders were prepared by heat treatment of the amorphous gel. while crack-free thin films of densely packed nano-crystalline particles were obtained on silicon substrates by dip-coating technique Photoluminescence (PL) properties as well as up-conversion (anti-stoke emission) of Er. Yb co-doped YAG phosphors were investigated Green (555 nm) and red (650 nm) photoluminescence up-conversion emissions arising due to (4)S(3/2) --> (4)I(15/2) and (4)F(9/2) --> (4)I(15/2) transitions, respectiv

• 出版日期2010-5