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首页> 外文期刊>RSC Advances >Tunable luminescence and energy transfer properties of Bi3+ and Mn4+ co-doped Ca14Al10Zn6O35 phosphors for agricultural applications
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Tunable luminescence and energy transfer properties of Bi3+ and Mn4+ co-doped Ca14Al10Zn6O35 phosphors for agricultural applications

机译：Bi 3 + 和Mn 4 + 共掺杂的Ca 14 Al 10 Zn的可调发光和能量转移性质用于农业的 6 O 35 荧光粉

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摘要

A series of Bi3+ and Mn4+ co-activated Ca14Al10Zn6O35 (CAZO) phosphors were synthesized using a solid state sintering method. The phase and morphologies of the CAZO based phosphors were confirmed using powder X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. A novel phosphor CAZO:Bi3+ emits bright blue light under near-ultraviolet (NUV) excitation and its luminescence properties were characterized by diffuse reflectance and photoluminescence spectra. Tunable luminescence from blue to red was observed in Bi3+ and Mn4+ co-activated CAZO, which is attributed to energy transfer from Bi3+ to Mn4+. The energy transfer mechanism has been characterized by the decay times of the Bi3+ emission, which changes with the concentration of Mn4+. The energy transfer efficiency from Bi3+ to Mn4+ increases linearly with increasing the concentration of Mn4+. The as-obtained phosphor has a potential application in agricultural industry because the blue and red lights excited by NUV light emitting diodes (LEDs) are helpful for the improvement of photosynthesis.
机译：一系列Bi 3 + 和Mn 4 + 共同激活的Ca 14 < / sub> Al 10 Zn 6 O 35 （small）（CAZO）荧光粉。分别使用粉末X射线衍射（XRD）和扫描电子显微镜（SEM）确认了CAZO基磷光体的相和形貌。一种新型的荧光粉CAZO：Bi 3 + 在近紫外（NUV）激发下发出明亮的蓝光，并通过漫反射和光致发光光谱表征其发光特性。在Bi 3 + 和Mn 4 + 共激活的CAZO中观察到从蓝色到红色的可调发光。归因于能量从Bi 3 + 转移到Mn 4 + 。 Bi 3 + 发射的衰减时间表征了能量传递机理，该衰减时间随Mn 4 + 。 Bi 3 + 到Mn 4 + 的能量转移效率随着Mn 4 + 。如此获得的磷光体在农业工业中具有潜在的应用，因为NUV发光二极管（LED）激发的蓝光和红光有助于改善光合作用。

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