Facile synthesis and optical properties of colloidal silica microspheres encapsulating a quantum dot layer.
We present colloidal silica microspheres encapsulating a homogeneous quantum dot layer at radial equidistance from the centre by utilizing electrostatic interaction between surface-engineered silica microspheres and QDs. The microspheres show dramatically enhanced optical absorption and emission with an appropriate silica shell thickness.
Cho
Myungje
M
Nano-Materials Center, Korea Institute of Science and Technology, P. O. Box 131, Cheongryang, Seoul 130-650, Korea.
Lim
Kipil
K
Woo
Kyoungja
K
D003102:Colloids / Q000138:chemical synthesis / Q000737:chemistry; D008863:Microspheres; D036103:Nanotechnology / Q000191:economics / Q000379:methods*; D045663:Quantum Dots; D012822:Silicon Dioxide / Q000138:chemical synthesis / Q000737:chemistry*; D013053:Spectrophotometry
D003102:Colloids; D012822:Silicon Dioxide