Analyses of energy transfer of Cr3+ and Nd3+ co-doped Y3Al5O12 ceramic powders at the 4T1 level of Cr3+ ion excitation

Abstract The concentration dependence of energy transfer from Cr3+ to Nd3+ at the 4T1 level excitation in Nd/Cr:YAG was investigated by the fluorescence decay curves of Cr3+ and Nd3+ for Nd/Cr:YAG and Cr:YAG ceramic powders in the Cr3+ concentration range of 0.1 to 6.0 mol%. The energy transfer process between Cr3+ and Nd3+ at the 4T1 level excitation is tried to explain using a rate equation that assumes energy transfer from the 2E–4T2 level to Nd3+ on the basis of dipole–dipole interactions, the same as the 4T2 level excitation. In conclusion, the energy excited to the 4T1 level will relax non-radiatively to the 2E–4T2 level and then transfer to Nd3+. It is presumed there will be no direct transfer from the 4T1 level to Nd3+. Our rate equations will be useful when simultaneously exciting the 4T1 and 4T2 levels of Cr3+ in Nd/Cr:YAG using broadband pumping sources.

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Polarization-assisted energy transfer process to improve mid-infrared luminescence by tuning nano-structure in Dy3+/Er3+ co-doped borate glass ceramics system

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2019.02.320 ◽

2019 ◽

Vol 788 ◽

pp. 972-977 ◽

Cited By ~ 1

Author(s):

Wenqing Xie ◽

Gongxun Bai ◽

Yangjian Cai ◽

Ying Tian ◽

Feifei Huang ◽

...

Keyword(s):

Energy Transfer ◽

Transfer Process ◽

Borate Glass ◽

Energy Transfer Process ◽

Glass Ceramics ◽

Nano Structure ◽

Mid Infrared ◽

Infrared Luminescence ◽

Co Doped

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Luminescence properties and energy transfer of Ce3+/Tb3+ co-doped Ca6Ba(PO4)4O phosphor for near-UV pumped light-emitting diodes

Journal of Materials Chemistry C ◽

10.1039/c5tc00358j ◽

2015 ◽

Vol 3 (16) ◽

pp. 4197-4204 ◽

Cited By ~ 53

Author(s):

Mingyue Chen ◽

Zhiguo Xia ◽

Quanlin Liu

Keyword(s):

Energy Transfer ◽

Transfer Process ◽

Light Emitting Diodes ◽

Energy Transfer Process ◽

Luminescence Properties ◽

Light Emitting ◽

Co Doped

The energy transfer process from Ce3+ to Tb3+ in Ca6Ba(PO4)4O and its mechanisms have been studied.

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Energy transfer process of Nd3+/Ho3+ co-doped fluoride halide glasses with anion substituted multi-wavelength tunable mid infrared luminescence

Journal of Rare Earths ◽

10.1016/j.jre.2020.10.004 ◽

2020 ◽

Author(s):

Hao Yin ◽

Xiaosong Zhang ◽

Lan Li ◽

Jiajia Zhang ◽

Zhaowei Zhang ◽

...

Keyword(s):

Energy Transfer ◽

Transfer Process ◽

Energy Transfer Process ◽

Mid Infrared ◽

Wavelength Tunable ◽

Infrared Luminescence ◽

Multi Wavelength ◽

Co Doped

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Resonant excitation of Er3+ by the energy transfer from Si nanocrystals

MRS Proceedings ◽

10.1557/proc-638-f14.28.1 ◽

2000 ◽

Vol 638 ◽

Author(s):

Kei Watanabe ◽

Minoru Fujii ◽

Shinji Hayashi

Keyword(s):

Energy Transfer ◽

Transfer Process ◽

Quantum Confinement ◽

Energy Transfer Process ◽

Exciton Energy ◽

Si Nanocrystals ◽

Wide Range ◽

Exciton Recombination ◽

Average Size ◽

Co Doped

AbstractPhotoluminescence (PL) of SiO2 films co-doped with Si nanocrystals (nc-Si) and Er was studied. The average size of nc-Si was changed in a wide range in order to tune the exciton energy of nc-Si to the energy separations between the discrete electronic states of Er3+. PL from exciton recombination in nc-Si and the intra-4f shell transition of Er3+ were observed simultaneously. At low temperatures, periodic features were observed in the PL spectrum of nc-Si. The period agreed well with the optical phonon energy of Si. The appearance of the phonon structures implies that nc-Si which satisfy the energy conservation rule during the energy transfer process can resonantly excite Er3+. The effects of the quantum confinement of excitons in nc-Si on the energy transfer process are discussed.

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