Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7118645 | Materials Science in Semiconductor Processing | 2015 | 6 Pages |
Abstract
In this paper, Sr2MgSi2O7:Eu2+,Dy3+ (SMS) particles were first synthesized by sol-gel method and then modified with 3-aminopropyltriethoxysilane (APS) to improve their dispersibility and compatibility in the polylactic acid (PLA) matrix. The structure of pure SMS particles was analyzed by XRD and XPS. The properties of SMS particles before and after modification were characterized by FT-IR and SEM. PLA/SMS composite films containing 15Â wt% of SMS particles were prepared by spin coating on silicon wafer. Their morphology and luminescence properties were examined. It was found that the composite films can be excited by a broad band from 330Â nm to 425Â nm with the highest excitation intensity at 360Â nm. The fluorescent and phosphorescent emission bands of the composite films and SMS particles all have a major emission peak at 468Â nm. Decay curves of the composite films have a similar tendency with that of the pure SMS particles, except for the lower intensity.
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Authors
Xingxing Zhang, Zhufa Zhou, Feng Ye, Xu Liu, Qiru Li,