Emission Spectra and Relaxation Mechanism of b State O2in Low Temperature Ar Solids

Abstract The spectral data for a novel fungal metabolite, moniliformin (potassium salt of 1-hydroxycyclobut- 1-ene-3,4-dione), are reported. The corrected ambient temperature fluorescence excitation and emission spectra are given and the quantum efficiency is calculated to be 5.32 × 10舓3. The uncorrected low temperature phosphorescence emission spectrum and lifetime are also reported. Other physical data are given to support spectral evidence that the molecule exists as a dimer in aqueous solutions.

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Room temperature and low-temperature absorption and emission spectra of some polypyridylruthenium(II) 3.2.1 complexes

Journal of Molecular Structure ◽

10.1016/s0022-2860(00)00779-1 ◽

2001 ◽

Vol 565-566 ◽

pp. 79-82 ◽

Cited By ~ 1

Author(s):

M.I Silva ◽

H.D Burrows ◽

S.J Formosinho ◽

M.da G Miguel

Keyword(s):

Low Temperature ◽

Room Temperature ◽

Emission Spectra ◽

Absorption And Emission ◽

Absorption And Emission Spectra

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Relaxation mechanism of low temperature SiGe/Si(001) buffer layers

Solid-State Electronics ◽

10.1016/j.sse.2004.02.011 ◽

2004 ◽

Vol 48 (8) ◽

pp. 1279-1284 ◽

Cited By ~ 14

Author(s):

Lili Vescan ◽

Susanne Wickenhäuser

Keyword(s):

Low Temperature ◽

Relaxation Mechanism ◽

Buffer Layers

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The effect of electron irradiation on the low‐temperature emission spectra from Ge‐doped Ga0.60Al0.40As grown by liquid phase epitaxy

Applied Physics Letters ◽

10.1063/1.92207 ◽

1981 ◽

Vol 38 (11) ◽

pp. 881-883 ◽

Cited By ~ 1

Author(s):

V. Swaminathan ◽

L. C. Kimerling ◽

W. R. Wagner

Keyword(s):

Liquid Phase ◽

Low Temperature ◽

Electron Irradiation ◽

Liquid Phase Epitaxy ◽

Emission Spectra

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Study of Ultraviolet Emission Spectra in ZnO Thin Films

Journal of Spectroscopy ◽

10.1155/2013/797232 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 13

Author(s):

Y. M. Lu ◽

X. P. Li ◽

P. J. Cao ◽

S. C. Su ◽

F. Jia ◽

...

Keyword(s):

Thin Films ◽

Low Temperature ◽

Free Exciton ◽

Emission Spectra ◽

Low Energy ◽

Zno Thin Films ◽

Ultraviolet Emission ◽

Exciton Transition ◽

Pl Spectra ◽

Uv Emission

Photoluminescence (PL) of ZnO thin films prepared on c-Al2O3substrates by pulsed laser deposition (PLD) are investigated. For all samples, roomtemperature (RT) spectra show a strong band-edge ultraviolet (UV) emission with a pronounced low-energy band tail. The origin of this UV emission is analyzed by the temperature dependence of PL spectra. The result shows that the UV emission at RT contains different recombination processes. At low temperature donor-bound exciton (D0X) emission plays a major role in PL spectra, while the free exciton transition (FX) gradually dominates the spectrum with increasing temperatures. It notes that at low temperature an emission band (FA) appears in low energy side of D0X and FX and can survive up to RT. Further confirmation shows that the origin of the band FA can be attributed to the transitions of conduction band electrons to acceptors (e, A0), in which the acceptor binding energy is estimated to be approximately 121 meV. It is concluded that at room temperature UV emission originates from the corporate contributions of the free exciton and free electrons-to-acceptor transitions.

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