期刊
RSC ADVANCES
卷 7, 期 24, 页码 14868-14875出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra01285c
关键词
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资金
- National Natural Science Foundation of China [51572200, 51102185, U1301242]
- National Natural Science Foundation of Zhejiang Province [Y16E020041]
- Public Industrial Technology Research Projects of Zhejiang Province [2015C31142]
- Research Fund for the Doctoral Program of Higher Education of China [20130171130001]
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Chinese Academy of Sciences [2008DP173016]
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 asobtained 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.
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