Results 321 to 330 of about 240,081 (351)
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Solid-State Electronics, 1978
Abstract The photoluminescence spectra of CuGaSe2 have been investigated at 76 K in the range 0.65 3 4 m grating monochromator. The luminescence observed consisted of a rather sharp structure near the energy gap, plus two broad peaks at considerably smaller energies.
Mario P. Vecchi, J. Ramos, W. Giriat
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Abstract The photoluminescence spectra of CuGaSe2 have been investigated at 76 K in the range 0.65 3 4 m grating monochromator. The luminescence observed consisted of a rather sharp structure near the energy gap, plus two broad peaks at considerably smaller energies.
Mario P. Vecchi, J. Ramos, W. Giriat
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Journal of Luminescence, 1970
Abstract The luminescence of n-type InP single crystals grown from an In-solution is investigated. The electron concentration range is 10 16 -10 19 cm -3 . Weakly doped crystals exhibit two major emission bands at helium temperature, one (containing 4 emission lines) near 1.416 eV, a second at 1.38 eV.
H.J. Queisser +3 more
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Abstract The luminescence of n-type InP single crystals grown from an In-solution is investigated. The electron concentration range is 10 16 -10 19 cm -3 . Weakly doped crystals exhibit two major emission bands at helium temperature, one (containing 4 emission lines) near 1.416 eV, a second at 1.38 eV.
H.J. Queisser +3 more
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Photoluminescence of superlattices
Superlattices and Microstructures, 1991Abstract In the luminescence spectra of Si:H SIN x :H superlattices with a decrease of the width d of a-Si:H layers, at d less than ≈ 4 nm, not only a line n ω 1 , caused by the transitions between tail-states, is shifted towards higher energies, but also a line n ω 2 , caused by the transitions from deep level ...
A.E. Yunovich, Gen Chun, V.E. Kaznacheev
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Il Nuovo Cimento B Series 11, 1974
The photoluminescence of a large number of pure and doped single crystals of GaSe has been investigated in the temperature range from 4.2 to 300 °K with excitation intensities varying between 4·10−5 and 3·102 kW cm−2. The excitation was produced by the green line of a frequency doubled Nd: YAG laser.
J. P. Voitchovsky, A. Mercier
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The photoluminescence of a large number of pure and doped single crystals of GaSe has been investigated in the temperature range from 4.2 to 300 °K with excitation intensities varying between 4·10−5 and 3·102 kW cm−2. The excitation was produced by the green line of a frequency doubled Nd: YAG laser.
J. P. Voitchovsky, A. Mercier
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Principles of Photoluminescence
2011Luminescence is the spontaneous emission of light from the excited electronic states of physical systems. e emission is preceded by the process of excitation, which may be produced by a variety of agents. Ifit is achieved by the absorption of light it is called photoluminescence, if by the action of an electric £eld electroluminescence, if by a ...
John Collins, Baldassare Di Bartolo
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Journal of Applied Physics, 1976
The photoluminescence of ZnTe has been monitored at 4.2 °K as a function of isochronal annealing in an argon atmosphere. Prior to annealing, all as-grown samples exhibited a strong bound-exciton line at 5220 Å (I1) and two distinct edge-emission series, the first at 5318 Å (A1 series) and the second at 5543 Å (B series).
W. R. Woody, J. M. Meese
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The photoluminescence of ZnTe has been monitored at 4.2 °K as a function of isochronal annealing in an argon atmosphere. Prior to annealing, all as-grown samples exhibited a strong bound-exciton line at 5220 Å (I1) and two distinct edge-emission series, the first at 5318 Å (A1 series) and the second at 5543 Å (B series).
W. R. Woody, J. M. Meese
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Photoluminescent Glasses and Their Applications
2019Glass materials are very attractive for the development of eco-friendly, engineer safe, and fully recyclable smart materials. Photoluminescent glass applies these unique properties to photonics, lighting, and photovoltaics by applying light down-conversion from UV to visible or near-infrared light, suitable for devices, smart windows, and LEDs, among ...
Laia, César A. T., Ruivo, Andreia
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Photoluminescence of photonic polaritons
Physical Review B, 2010In this paper, we study both experimentally and theoretically the photoluminescence PL properties of a monolithic organic based optical device constituted by two coupled MCs. The PL spectra from this coupled structure display two narrow peaks despite only one cavity b contains an active layer weakly coupled to the cavity mode. The presence of two peaks
A. Ridolfo +4 more
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Electro-photoluminescence in organics
Chemical Physics Letters, 2007We report a successful observation of the electro-photoluminescence (EL-PL) in thin, exciplex emitting, organic, solid films. The increasing electric field applied to injecting electrodes tends to reduce the total light emission because of the dissociation of emissive exciplex states and their precursors, and, at the same time, the radiative ...
Kalinowski J +4 more
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The Photoluminescence of Flames
Physical Review, 1923Effect of light on the intensity of the flame spectra of Li, Na, Ca, and Sr.---The salted flame of an air-hydrogen blast lamp was illuminated with the full light from a tungsten lamp, a carbon arc, a mercury arc and an iron spark, and the intensity of the bands or lines emitted, as determined by a photometric balance method in connection with a ...
H. L. Howes, E. L. Nichols
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