X. Wang, X. Wang, T. Jin, Q. Wu, X. Chai, J. Li, J. Hu
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引用次数: 0
摘要
采用简便的高温固相法制备了一系列新型 Dy3+：采用简便的高温固相法制备了一系列新型 NaGdGeO4 荧光粉。利用基于 DFT 的第一性原理对其电子结构进行了研究。这些荧光粉保持了稳定的相结构，并在激发波长为 347 nm 时发出强烈的黄色光。它具有极佳的热稳定性（416 K 时的室温发射强度为 77%）。此外，还分别讨论了其他一些发光特性，如水平寿命（338 µs）、IQE（40.86%）和 CCT（3179 K）。这些结果表明，它可以用作一种有价值的 LED 黄色荧光粉。
A novel strongly yellow-emitting Dy3+: NaGdGeO4 phosphor with excellent thermal stability
A series of novel Dy3+: NaGdGeO4 phosphors were prepared by a facile high-temperature solid-phase method. Its electronic structures were investigated using first-principles based on DFT. These phosphors kept stable phase structure and displayed strongly yellow emission under the excited wavelength of 347 nm. It presented excellent thermal stability (77% of room temperature emission intensity at 416 K). In addition, some other luminescent properties like the level lifetime (338 µs), IQE (40.86%) and CCT (3179 K) were discussed respectively. These results showed it could be used as a kind of valuable yellow phosphor for LED.
期刊介绍：
Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.
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