Flower-like YBO3∶Eu3+ thin films were prepared on the AAO template by a hydrothermal method and the effects of some processing variables, such as temperature and calcinated time, were investigated. The formation of Y...Flower-like YBO3∶Eu3+ thin films were prepared on the AAO template by a hydrothermal method and the effects of some processing variables, such as temperature and calcinated time, were investigated. The formation of YBO3∶Eu3+ thin films were confirmed by EDX, XRD and PL spectra. The PL spectra show that the characteristic emission of the YBO3∶Eu3+/AAO thin film is the 5D0 →7F1 transition.展开更多
Y1-xEuxBO3 nanophosphors were synthesized by a modified co-precipitation method. The structure of the obtained nanocrystals was determined by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. The...Y1-xEuxBO3 nanophosphors were synthesized by a modified co-precipitation method. The structure of the obtained nanocrystals was determined by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. The average crystallite size was calculated from the full-width at half-maximum （FWHM） of the diffraction peaks by the Scherrer equation. The average particles size was 25±10 nm. The spectroscopic properties of the Y1-xEuxBO3 nanoborates were characterized by excitation and emission spectra under UV and VUV excitation. In order to improve colour purity, the chromaticity coordinates were also calculated.展开更多
文摘Flower-like YBO3∶Eu3+ thin films were prepared on the AAO template by a hydrothermal method and the effects of some processing variables, such as temperature and calcinated time, were investigated. The formation of YBO3∶Eu3+ thin films were confirmed by EDX, XRD and PL spectra. The PL spectra show that the characteristic emission of the YBO3∶Eu3+/AAO thin film is the 5D0 →7F1 transition.
基金Project supported by the Polish Ministry of Science and Higher Education (N N204 089838)the Estonian Science Foundation (grant 8893)the European Community Research Infrastructure Action under the FP6 Structuring the European Research Area Programme (through the Integrated Infrastructure Initiative Integrating Activity on Synchrotron and Free Electron Laser Science)
文摘Y1-xEuxBO3 nanophosphors were synthesized by a modified co-precipitation method. The structure of the obtained nanocrystals was determined by X-ray diffraction （XRD） and transmission electron microscopy （TEM）. The average crystallite size was calculated from the full-width at half-maximum （FWHM） of the diffraction peaks by the Scherrer equation. The average particles size was 25±10 nm. The spectroscopic properties of the Y1-xEuxBO3 nanoborates were characterized by excitation and emission spectra under UV and VUV excitation. In order to improve colour purity, the chromaticity coordinates were also calculated.
