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Your search keyword '"Selenium compounds -- Atomic properties"' showing total 6 results
Start Over Descriptor "Selenium compounds -- Atomic properties" Topic selenium compounds -- optical properties
6 results on '"Selenium compounds -- Atomic properties"'

1. Photon counting statistics for blinking CdSe-ZnS quantum dots: A levy walk process

Author

Margolin, G., Protasenko, V., Kuno, M., and Barkai, E.

Subjects
Photons -- Atomic properties, Selenium compounds -- Atomic properties, Selenium compounds -- Optical properties, Zinc compounds -- Atomic properties, Zinc compounds -- Optical properties, Sulfur compounds -- Optical properties, Sulfur compounds -- Atomic properties, Chemicals, plastics and rubber industries
Abstract

Photon statistics of blinking CdSe-ZnS nanocrystals interacting with a continuous wave laser field is analyzed showing that the process is described by a ballistic Levy walk. It is shown that Mandels Q parameter, describing the fluctuations of the photon counts is increasing with time eve in the limit of long time.

Published
2006

2. Optical and electron paramagnetic spectroscopies of diffusion-doped Co(super 2+): ZnSe

Author

Ming Luo, Garces, N.C., Giles, N.C., Roy, Utpal N., Cui, Yunlong, and Burger, Arnold

Subjects
Diffusion -- Research, Zinc compounds -- Atomic properties, Zinc compounds -- Optical properties, Selenium compounds -- Atomic properties, Selenium compounds -- Optical properties, Physics
Abstract

The efficacy of diffusing cobalt into window-grade polycrystalline ZnSe during high-temperature anneals is studied. Absorption, photoluminescence (PL), time-resolved PL, and electron paramagnetic resonance (EPR) are used to characterize samples with cobalt concentrations ranging from 10(super17) to 10(super19) cm(super -3).

Published
2006

3. Interfacial layer formation between Cu(In, Ga)Se2 and In(sub x)S(sub y) layers

Author

Abou-Ras, D., Kostroz, G., and Tiwari, A.N.

Subjects
Solar batteries -- Design and construction, Solar cells -- Design and construction, Indium -- Optical properties, Indium -- Atomic properties, Selenium compounds -- Optical properties, Selenium compounds -- Atomic properties, Copper compounds -- Optical properties, Copper compounds -- Atomic properties, Physics
Abstract

Experimental results and possible explanations will be presented on how substrate temperature and air annealing influence the interface between Cu(In, Ga)Se2 (CIGS) and powder evaporated In(sub x)S(sub y). These interfaces are studied by means of bright-field and high-resolution transmission electron microscopy.

Published
2005

4. Ultrafast shift and injection currents observed in wurtzite semiconductors via emitted terahertz radiation

Author

Laman, N., Bieler, M., and van Driel, H.M.

Subjects
Selenium compounds -- Optical properties, Selenium compounds -- Atomic properties, Terahertz radiation -- Research, Physics
Abstract

A systematic study of both shift and injection currents in the wurtzite semiconductors CdSe and CdS at 295 K is generated using above-band-gap femtosecond pulses and detected through the emitted terahertz radiation. The results have shown no temporal difference between the electro-optic (EO) terahertz traces from shift and injection currents in CdS, implying the momentum scattering time in all experiments is less than 100 fs.

Published
2005

5. Optically active seleninate esters: Isolation, absolute configuration, racemization, mechanism, and transformation into chiral selenoxide

Author

Nakashima, Yusuke, Shimizu, Toshio, Hirabayashi, Kazunori, Iwasaki, Fujiko, Yamasaki, Mikio, and Kamigata, Nobumasa

Subjects
Selenium compounds -- Atomic properties, Selenium compounds -- Optical properties, Esters -- Atomic properties, Esters -- Optical properties, Biological sciences, Chemistry
Abstract

Optically active seleninate esters are obtained by chromatographic resolution on an optically active column. The reaction of the optically active seleninate ester and the sulfinate ester having bulky substituents with Grignard reagents is found to proceed with the retention of stereochemistry to give an optically active selenoxide and sulfoxides, respectively.

Published
2005

6. Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes

Author

Sykora, Milan, Petruska, Melissa A., Alstrum-Acevedo, James, Bezel, Ilya, Meyer, Thomas J., and Klimov, Victor I.

Subjects
Charge transfer -- Research, Selenium compounds -- Optical properties, Selenium compounds -- Atomic properties, Chemistry
Abstract

The photoinduced charge transfer (CT) between CdSe nanocrystal quantum dots (NQDs) and a series of Ru-polypyridine complexes in solution are studied. It is shown that mixing of NQDs and Ru-polypyridine complexes results in formation of electronically coupled assemblies and the photoexcitation of these assemblies has led to the oxidation of the adsorbed complex through efficient hole transfer from the NQD.

Published
2006

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