Edge Emission in Zinc Selenide Single Crystals

1961 ◽  
Vol 32 (10) ◽  
pp. 2250-2254 ◽  
Author(s):  
D. C. Reynolds ◽  
L. S. Pedrotti ◽  
O. W. Larson
Keyword(s):  
Single Crystals ◽  
Zinc Selenide ◽  
Edge Emission

A spectroscopic study of optical centers in diamond grown by microwave-assisted chemical vapor deposition

1990 ◽  
Vol 5 (11) ◽  
pp. 2507-2514 ◽  
Author(s):  
A. T. Collins ◽  
M. Kamo ◽  
Y. Sato
Keyword(s):  
Chemical Vapor Deposition ◽  
Radiation Damage ◽  
Single Crystals ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Cvd Diamond ◽  
Edge Emission ◽  
Microwave Assisted ◽  
Bright Blue ◽  
Methane Concentrations

Absorption and cathodoluminescence spectra have been recorded for single crystals of diamond and polycrystalline films of diamond, grown by microwave-assisted chemical vapor deposition (CVD) using methane and hydrogen. The investigation has been carried out to see to what extent the properties of CVD diamond are similar to those of conventional diamond, and to what extent they are unique. Studies have been made of the as-grown material, which has not been intentionally doped, and also samples that have been subjected to radiation damage and thermal annealing. The single crystals grown using methane concentrations of 0.5 to 1.0% exhibit bright blue “band A” emission and also intense edge emission, similar to the cathodoluminescence spectra of some natural type IIa diamonds. This implies that the crystals are relatively free from structural and chemical defects, a conclusion which is reinforced by the absence of any zero-phonon lines in the absorption spectra of crystals which have been subjected to radiation damage and annealing at 800 °C. Before radiation damage the spectrum does, however, reveal an absorption which increases progressively to higher energies, and which may be associated with sp2-bonded carbon. The Cathodoluminescence spectra after radiation damage indicate that the crystals contain some isolated nitrogen, and the detection of H3 luminescence, following thermal annealing at 800 °C, demonstrates for the first time that these samples contain small concentrations of nitrogen pairs. All of the polycrystalline films, grown using methane concentrations between 0.3 and 1.5%, have an absorption which increases progressively to higher energies, and which again is attributed to sp2-bonded carbon. This absorption is stronger in the films grown using higher methane concentrations. Films grown at a methane concentration of 0.3% also exhibit bright blue cathodoluminescence, although the edge emission is undetectably weak. The use of higher methane concentrations produces films with evidence in the cathodoluminescence spectra of nitrogen + vacancy and nitrogen + interstitial complexes, as well as optical centers unique to CVD diamond. One particular defect produces an emission and absorption line at 1.681 eV. By implanting conventional diamonds with 29Si ions it has been confirmed that this center involves silicon, and it has been shown that the 1.681 eV luminescence is relatively more intense in implanted diamonds which have a high concentration of isolated nitrogen.

Pair Spectra and "Edge Emission" in Zinc Selenide

1969 ◽  
Vol 178 (3) ◽  
pp. 1310-1318 ◽  
Author(s):  
P. J. Dean ◽  
J. L. Merz
Keyword(s):  
Zinc Selenide ◽  
Edge Emission

scholarly journals Diffusion layers of zinc selenide with a predominant edge emission

2009 ◽  
Vol 10 (4) ◽  
pp. 206
Author(s):  
V Makhniy ◽  
M Slyotov ◽  
I Tkachenko ◽  
A Slyotov ◽  
P Horley ◽  
...  
Keyword(s):  
Zinc Selenide ◽  
Edge Emission ◽  
Diffusion Layers

Spectroscopic evidence for surface hydronium (H3O+) ions on hydrated single crystals

1987 ◽  
Vol 65 (5) ◽  
pp. 924-927 ◽  
Author(s):  
Simona Bădilescu ◽  
Camille Sandorfy
Keyword(s):  
Single Crystals ◽  
Zinc Selenide ◽  
Silicon Germanium ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Pyridine Derivatives ◽  
Bending Vibration ◽  
Hydronium Ions ◽  
Hydronium Ion ◽  
Thallium Bromide

Evidence has been obtained by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) for the existence of hydronium ions on the surfaces of hydrated single crystals. The band near 1740 cm−1 due to the ν4 (e) bending vibration of the hydronium ion has been identified on silicon, germanium, thallium bromide iodide (KRS-5), and zinc selenide single crystals. The protonating capability of these hydronium ions was demonstrated with pyridine derivatives.

Laser radiation power meters and modulators based on zinc selenide single crystals

1994 ◽  
Author(s):  
Yuri A. Zagoruiko ◽  
Vitaliy K. Komar ◽  
V. P. Migal ◽  
O. N. Chugai
Keyword(s):  
Laser Radiation ◽  
Single Crystals ◽  
Zinc Selenide ◽  
Radiation Power ◽  
Laser Radiation Power

Band-edge emission of undoped and doped ZnO single crystals at room temperature

2002 ◽  
Vol 91 (6) ◽  
pp. 3658-3663 ◽  
Author(s):  
Naoki Ohashi ◽  
Takashi Sekiguchi ◽  
Kouichiroh Aoyama ◽  
Takeshi Ohgaki ◽  
Yoshihiro Terada ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Band Edge ◽  
Band Edge Emission ◽  
Edge Emission ◽  
Doped Zno

The temperature dependence of the edge emission of GaSe single crystals at high excitation levels

1974 ◽  
Vol 11 (3) ◽  
pp. 274-276 ◽  
Author(s):  
R. Baltramiejūnas ◽  
G. Guseinov ◽  
V. Narkevičius ◽  
V. Niunka ◽  
J. Vaitkus ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Single Crystals ◽  
High Excitation ◽  
Edge Emission

Stimulated radiation emitted from zinc selenide single crystals under streamer excitation conditions

1985 ◽  
Vol 15 (4) ◽  
pp. 475-477
Author(s):  
V V Zubritskiĭ ◽  
V A Zyul'kov ◽  
V S Chirvonyĭ ◽  
G P Yablonskiĭ ◽  
V P Gribkovskiĭ
Keyword(s):  
Single Crystals ◽  
Zinc Selenide ◽  
Stimulated Radiation ◽  
Excitation Conditions
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