| 초록 |
Optical amplificator have been used to compensate the losses in the optical signal transmission and processing. Today, there has been increasing demand for the very low cost optical amplifier. Sol-gel offers considerable potential both low cost manufacture, and for great flexibility in materials composition and structure. In addition, the sol-gel process is a very attractive method for producing porous materials with controlled structure. In this work, we present the potoluminescence properties of Er doped Al2O3/SiO2 films. Erbium doped alumina nano sol was prepared by Al(NO3)3·9H2O and Er(NO3)3·5H2O through hydrolysis and peptization, and then GPS(3-Glycidoxypropyltrimethoxysilane) was added into Er doped alumina nano sol for organic-inorganic hybridization. Er doped Al2O3/SiO2 film was obtained by spin coating, dip coating and thermal treatment from 300℃∼1200℃, and there were crack-free after thermal treatment. The thickness of film was measured SEM, and the porosity of film was characterized by BET and TGA. The crystal phase of Er doped Al2O3/SiO2 were determined by XRD. Finally, the photoluminescence properties of Er doped Al2O3/SiO2 films will be discuss with the consideration of porosity and crystallity. |
