Energy transfer mechanisms in Er-Yb-Y disilicate thin films

2012 ◽  
Vol 100 (25) ◽  
pp. 251913 ◽  
Author(s):  
P. Cardile ◽  
M. Miritello ◽  
F. Priolo
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Transfer Mechanisms

Trapping and Luminescence Mechanism Studies in SrS:Eu2+, Sm3+ Thin Films at Various Temperatures

1992 ◽  
Vol 281 ◽  
Author(s):  
Susan Z. Hua ◽  
L. Salamanca-Riba ◽  
M. Wuttig ◽  
P. K. Soltani
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Excitation Energy ◽  
Uv Light ◽  
Electronic Transitions ◽  
Energy Bands ◽  
Excitation Energies ◽  
Light Excitation ◽  
Direct Inter ◽  
Transfer Mechanisms

ABSTRACTThe temperature dependence of photoluminescence in SrS singly and doubly doped with Eu2+, Sm3+ was studied with different excitation energies. Different energy transfer mechanisms, namely, phonon-assisted energy transfer and electron transfer through energy bands, depending on the excitation energy, are proposed to take place in SrS:Eu2+, Sm3+ thin films. We estimate that under UV light excitation 10% of Eu2+ emission originates from electronic transitions between Eu2+ and Sm3+ through the conduction and valance bands. In contrast, direct inter-ionic transitions take place for 2.84 eV excitation energy via a phonon assistance mechanism.

Luminescence Properties and energy transfer mechanism of Eu3+ and Tm3+ Co-doped AlN Thin Films

2021 ◽  
pp. 118082
Author(s):  
Hai Ma ◽  
Xiaodan Wang ◽  
Feifei Chen ◽  
Jiafan Chen ◽  
Xionghui Zeng ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Transfer Mechanism ◽  
Luminescence Properties ◽  
Energy Transfer Mechanism ◽  
Co Doped

scholarly journals Ultrafast Electron/Energy Transfer and Intersystem Crossing Mechanisms in BODIPY-Porphyrin Compounds

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 312
Author(s):  
Yusuf Tutel ◽  
Gökhan Sevinç ◽  
Betül Küçüköz ◽  
Elif Akhuseyin Yildiz ◽  
Ahmet Karatay ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Spectra ◽  
Visible Region ◽  
Energy Transfer Mechanism ◽  
Free Base ◽  
Pump Probe ◽  
Harvesting Efficiency ◽  
Probe Spectroscopy ◽  
Absorption Features ◽  
Transfer Mechanisms

Meso-substituted borondipyrromethene (BODIPY)-porphyrin compounds that include free base porphyrin with two different numbers of BODIPY groups (BDP-TTP and 3BDP-TTP) were designed and synthesized to analyze intramolecular energy transfer mechanisms of meso-substituted BODIPY-porphyrin dyads and the effect of the different numbers of BODIPY groups connected to free-base porphyrin on the energy transfer mechanism. Absorption spectra of BODIPY-porphyrin conjugates showed wide absorption features in the visible region, and that is highly valuable to increase light-harvesting efficiency. Fluorescence spectra of the studied compounds proved that BODIPY emission intensity decreased upon the photoexcitation of the BODIPY core, due to the energy transfer from BODIPY unit to porphyrin. In addition, ultrafast pump-probe spectroscopy measurements indicated that the energy transfer of the 3BDP-TTP compound (about 3 ps) is faster than the BDP-TTP compound (about 22 ps). Since the BODIPY core directly binds to the porphyrin unit, rapid energy transfer was seen for both compounds. Thus, the energy transfer rate increased with an increasing number of BODIPY moiety connected to free-base porphyrin.

scholarly journals Energy transfer mechanisms and resolvent analysis in the cylinder wake

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Bo Jin ◽  
Sean Symon ◽  
Simon J. Illingworth
Keyword(s):  
Energy Transfer ◽  
Cylinder Wake ◽  
Transfer Mechanisms

scholarly journals Influence of SiO2/TiO2 nanocomposites on dual resonance Förster energy transfer in ternary hybrid thin films

2021 ◽  
pp. 104142
Author(s):  
Bandar Ali Al-Asbahi ◽  
Saif M.H. Qaid ◽  
Hamid M. Ghaithan ◽  
Arwa Alhamedi Alanezi
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Förster Energy Transfer ◽  
Hybrid Thin Films ◽  
Dual Resonance

Collapse of the Förster energy transfer in doped p-hexaphenylene thin films undergoing crystallization

2008 ◽  
Vol 92 (20) ◽  
pp. 203301 ◽  
Author(s):  
G. Bardizza ◽  
R. Caniello ◽  
P. Milani ◽  
N. Casati ◽  
V. I. Srdanov
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Förster Energy Transfer
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