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.

Enhanced photoluminescence by excitation energy transfer in thin films consisting of fluorescent conjugated polymer and porphyrin

2018 ◽  
Vol 653 ◽  
pp. 136-142 ◽  
Author(s):  
Hitoshi Mizuno ◽  
Shunsuke Nasu ◽  
Koichiro Kitamura ◽  
Tamao Aoki-Matsumoto ◽  
Akihisa Fujita ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Excitation Energy ◽  
Conjugated Polymer ◽  
Excitation Energy Transfer ◽  
Enhanced Photoluminescence

Photoluminescence and Energy Transfer of Ce3+ and Tb3+ Co-Doped Ba5(PO4)3Cl Phosphor for Light-Emitting Diodes

2013 ◽  
Vol 401-403 ◽  
pp. 796-799 ◽  
Author(s):  
Jia Yue Sun ◽  
Dian Peng Cui ◽  
Bing Xue ◽  
Guang Chao Sun
Keyword(s):  
Energy Transfer ◽  
Single Phase ◽  
Uv Light ◽  
Green Light ◽  
Emission Spectra ◽  
Solid State Reaction Method ◽  
X Ray Diffraction ◽  
Light Emitting ◽  
Effective Energy Transfer ◽  
Light Excitation

Single-phase Ba5(PO4)3Cl:Ce3+,Tb3+ (BPCl:Ce3+,Tb3+) samples have been synthesized via solid-state reaction method. The phase structure and luminescence properties are characterized using powder X-ray diffraction (XRD), photoluminescence excitation and emission spectra. Effective energy transfer occurs from Ce3+ to Tb3+ due to the observed spectral overlap between the emission band of Ce3+ and the excitation band of Tb3+. Ce3+/Tb3+-codoped Ba5(PO4)3Cl shows more intense yellowish-green light compared to that of Tb3+-doped sample under UV light excitation.

Luminescence and energy transfer properties of Gd2P4O13:Tm3+, Dy3+ phosphor with UV light excitation

Optik ◽  
2018 ◽  
Vol 175 ◽  
pp. 304-311
Author(s):  
Jiyou Wang ◽  
Xiang Xiang Liu ◽  
Yue Liu ◽  
Hongmei Liu ◽  
Jin Xiang Deng
Keyword(s):  
Energy Transfer ◽  
Uv Light ◽  
Light Excitation ◽  
Transfer Properties

Rhodamine-based ratiometric fluorescent probes based on excitation energy transfer mechanisms: construction and applications in ratiometric sensing

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 50732-50760 ◽  
Author(s):  
Ruiqi Zhang ◽  
Fanyong Yan ◽  
Yicun Huang ◽  
Depeng Kong ◽  
Qianghua Ye ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Fluorescent Probes ◽  
Excitation Energy Transfer ◽  
Ratiometric Sensing ◽  
Transfer Mechanisms

Rhodamine is a convenient platform for the construction of “OFF–ON” ratiometric excitation energy transfer fluorescent probes.

Possible Mechanism of the 30–100 Picoseconds Fast and Efficient Photoluminescence From nc-Si/a-SiO2Doped with Transition Metals

1996 ◽  
Vol 452 ◽  
Author(s):  
S. Veprek ◽  
Th. Wirschem ◽  
J. Dian ◽  
S. Perná ◽  
R. Merica ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Transition Metals ◽  
Comparative Study ◽  
Silicon Nanocrystals ◽  
Light Emission ◽  
Uv Light ◽  
Charge Carriers ◽  
Radiative Center ◽  
Insight Into

AbstractThe nc-Si/a-SiO2composite thin films doped with tungsten show very fast and efficient photoluminescence (PL). In order to obtain insight into the PL mechanism we have performed a comparative study with other metals. The results lend support to the suggested mechanism which includes the photogeneration of charge carriers due to efficient absorption of the excitation UV light in the silicon nanocrystals followed by energy transfer to the Wn+radiative center from which the light emission occurs.

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

Excitation energy transfer mechanisms in allophycocyanin (I)

1999 ◽  
Vol 44 (11) ◽  
pp. 1003-1008
Author(s):  
Jingmin Zhang ◽  
Xiguang Zheng ◽  
Fuli Zhao ◽  
Hezhou Wang ◽  
Jianping Zhang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Excitation Energy Transfer ◽  
Transfer Mechanisms

Eu2+ → Tb3+ → Eu3+ energy transfer in Ca6La2Na2(PO4)6F2:Eu, Tb phosphors

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33990-33997 ◽  
Author(s):  
Mubiao Xie ◽  
Guoxian Zhu ◽  
Dongyu Li ◽  
Rongkai Pan ◽  
Xionghui Fu
Keyword(s):  
Energy Transfer ◽  
Uv Light ◽  
Color Gamut ◽  
Light Excitation ◽  
Tunable Emission

Eu2+ → Tb3+ → Eu3+ energy transfer exist in CLPF host, and tunable emission with a large color gamut can be obtained under n-UV light excitation.

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