Journal
NANOSCALE RESEARCH LETTERS
Volume 5, Issue 4, Pages 761-768Publisher
SPRINGEROPEN
DOI: 10.1007/s11671-010-9554-9
Keywords
Luminescence; Eu3+ doping; Cubic mesoporous; Thin film; Sol-gel
Funding
- MOST [2008DFA50340]
- MOE, China [20070730022]
- National Natural Science Foundation of China [50872046]
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Eu3+ ions-doped cubic mesoporous silica thin films with a thickness of about 205 nm were prepared on silicon and glass substrates using triblock copolymer as a structure-directing agent using sol-gel spin-coating and calcination processes. X-ray diffraction and transmission electron microscopy analysis show that the mesoporous silica thin films have a highly ordered body-centered cubic mesoporous structure. High Eu3+ ion loading and high temperature calcination do not destroy the ordered cubic mesoporous structure of the mesoporous silica thin films. Photoluminescence spectra show two characteristic emission peaks corresponding to the transitions of D-5(0)-F-7(1) and D-5(0)-F-7(2) of Eu3+ ions located in low symmetry sites in mesoporous silica thin films. With the Eu/Si molar ratio increasing to 3.41%, the luminescence intensity of the Eu3+ ions-doped mesoporous silica thin films increases linearly with increasing Eu3+ concentration.
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