Color modulation by selective excitation activated defects and complex cation distribution in Zn1−xMgxAl2O4 nanocrystals

Seawater contains high amounts of organic material and ions causing high salinity.The distribution of nutrients in the ocean is determined by ocean circulation, biological processes of uptake and mineralization, and subsequent regeneration of nutrients by migration of animals and by supply from the land.Topic related to sea water is important to discuss and to be a challenging with many researchers in Indonesia. In this paper, organic mater from sea water was learned in detail. The information contained of formulation history, justifi cation, distribution, advantages, and method of measure, type and effect to environment.Keywords: organic material, sea water, dissolved

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265 nm AlGaN-based deep-ultraviolet light-emitting diodes grown on AlN substrates studied by photoluminescence spectroscopy under ideal pulsed selective and non-selective excitation conditions

Applied Physics Express ◽

10.35848/1882-0786/abb86f ◽

2020 ◽

Vol 13 (10) ◽

pp. 102005 ◽

Cited By ~ 2

Author(s):

Ryota Ishii ◽

Akira Yoshikawa ◽

Kazuhiro Nagase ◽

Mitsuru Funato ◽

Yoichi Kawakami

Keyword(s):

Ultraviolet Light ◽

Light Emitting Diodes ◽

Selective Excitation ◽

Photoluminescence Spectroscopy ◽

Light Emitting ◽

Deep Ultraviolet ◽

Ultraviolet Light Emitting Diodes ◽

Excitation Conditions

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Coadsorption of bulky ions by surfactants. Monomolecular layers of tris(2,2'-bipyridyl)ruthenium(II) complex with sodium lauryl sulphate on glassy carbon, platinium, n-SnO2, and n-Si electrodes

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19842187 ◽

1984 ◽

Vol 49 (10) ◽

pp. 2187-2196 ◽

Cited By ~ 1

Author(s):

Jan Lasovský ◽

František Grambal ◽

Miroslav Rypka

Keyword(s):

Glassy Carbon ◽

Complex Cation ◽

Radiant Energy ◽

Electric Energy ◽

Sodium Lauryl Sulphate ◽

Surface Films ◽

Order Of Magnitude ◽

Monomolecular Layers ◽

Self Association ◽

Semiconductor Electrodes

The electrochemical and photochemical behaviour of tris(2,2'-bipyridyl)ruthenium(II) complex (I) on glassy carbon, platinium, n-SnO2, and n-Si electrodes in the presence of sodium lauryl sulphate (II) was investigated. The surfactant in low concentrations induces self-association of the complex cation and its accumulation in the electrode-solution interface. At the optimum concentrations of sodium lauryl sulphate (cII ~0.6 mmol l-1) and of the complex (cI < 0.1 mmol l-1), monomolecular layers composed of I, II counterions are formed on the electrodes. The formation of the surface films does not depend on the kind of the electrode and improves the sensitivity of the voltammetric determination of I by as much as an order of magnitude. For the semiconductor electrodes, the surface films enhance the efficiency of conversion of radiant energy into electric energy. The effect under study may participate in the photosynthesis of green plants.

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