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ZJ987178617

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[求助] Synthesis and photoluminescence properties of hierarchical architectures of

We present a general hydrothermal method without any organic solvent or surfactant for the synthesisof YBO3:Eu3+nano- and micro-structures. The samples were of excellent quality with uniform, welldispersed, self-assembled and self-purified YBO3:Eu3+. Single crystal nanoflakes gathered together toevolve into a hierarchical architecture with eight different types of three dimensional morphologies.Strong photoluminescence spectra were obtained at 592, 611 and 627 nm at excitations wavelengths 254and 363 nm. The emission spectra are associated with the transitions from the excited5D0level to the7FJ(J ¼ 1, 2, 3, 4) levels of Eu3+activators. YBO3:Eu3+prepared using ethanol solvent exhibited thehighest chromaticity values yet reported.
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jiangguofeng

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RXMCDM: 金币+1 2014-05-08 11:27:53
ZJ987178617: 金币+11, 翻译EPI+1, 很完美 2014-05-19 08:46:49
分层体系结构的合成和光致发光特性
我们提出一种通用的水热法,不使用任何有机溶剂或表面活性剂,合成YBO3:Eu3+纳米和微米结构。样品是一种具有质量均匀、分散良好、自组装和自净化特性的YBO3:Eu3+。,单晶纳米片集聚一起逐步发展成一种具有八个不同类型三维形貌的分层体系结构。以254和363 nm激发波长,于592、611和627 nm处得到强光致发光光谱。这种发射光谱与Eu3+活性度由激发的5D0水平向7FJ(J & frac 14; 1, 2, 3, 4)水平的过渡有联系。还有过使用乙醇溶剂制备YBO3:Eu3+时出现色值最高的报导。
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