Synthesis, structure and characterization of novel metal-organic single crystal: Dibromobis(L-proline)zinc(II)

2013 ◽  
Author(s):  
G. Venkatesan ◽  
G. Anandha Babu ◽  
P. Ramasamy
Keyword(s):  
Single Crystal ◽  
Organic Single Crystal ◽  
Metal Organic

Synthesis, structure and characterization of novel metal–organic single crystal: Dibromobis(l-proline)zinc(II)

2013 ◽  
Vol 1033 ◽  
pp. 121-126 ◽  
Author(s):  
G. Venkatesan ◽  
G. Anandha Babu ◽  
P. Ramasamy ◽  
A. Chandramohan
Keyword(s):  
Single Crystal ◽  
Organic Single Crystal ◽  
Metal Organic

Charge Collection Characterization of Polycrystalline n-GaAs Layers for Solar Cells

1981 ◽  
Vol 5 ◽  
Author(s):  
O. Paz ◽  
K. N. Bhat ◽  
J. M. Borrego
Keyword(s):  
Solar Cells ◽  
Single Crystal ◽  
Grain Boundaries ◽  
Random Distribution ◽  
Charge Collection ◽  
Typical Cell ◽  
Metal Organic ◽  
Organic Process ◽  
Excitation Volume

ABSTRACTN–type Ga-As polycrystalline layers, grown on Mo substrates by the metal-organic process were investigated using the SEM. Micrographs of charge collection contrast indicate a fairly random distribution of high collection (bright) grains. In a typical cell about 1/3 of its area is bright, with nonuniformities in collection current within and between grains. These results correlate well with Isc measurements, and some of the variations betweencells is explained in terms of insufficient doping of the grain boundaries.Reducing the penetrating depth of the carriers' excitation volume results in lowering of the collection current. The measurements were normalized for changes in beam and EBIC current by a comparison with a single crystal cell of the same geometry. This degradation is explained in terms of contamination or damage of the layer close to the surface during growth.

Growth and characterization of an efficient semi organic single crystal: Sodium hydrogen oxalate monohydrate

2018 ◽  
Vol 56 (6) ◽  
pp. 2673-2683 ◽  
Author(s):  
C. Rathika Thaya Kumari ◽  
M. Nageshwari ◽  
S. Sudha ◽  
M. Lydia Caroline
Keyword(s):  
Single Crystal ◽  
Sodium Hydrogen ◽  
Organic Single Crystal

Studies on growth and characterization of nicotinium tartrate single crystal: An efficient organic nonlinear optical material

2017 ◽  
Vol 26 (01) ◽  
pp. 1750004 ◽  
Author(s):  
A. Alexandar ◽  
A. Lakshmanan ◽  
S. Sakthy Priya ◽  
P. Surendran ◽  
P. Rameshkumar ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spectrum Analysis ◽  
Nonlinear Optical ◽  
Frequency Conversion ◽  
Grown Crystal ◽  
Structural Information ◽  
Visible Region ◽  
Solution Technique ◽  
Organic Single Crystal

Organic single crystal of nicotinium tartrate (NT), an efficient nonlinear optical (NLO) material for frequency conversion, has been grown at a constant temperature at 40[Formula: see text]C within a period of 20 days by slow evaporation solution technique (SEST). Structural information and lattice dimensions were determined using powder X-ray diffractometer (PXRD) analysis. The functional groups and vibrational frequencies were identified using FTIR spectrum analysis with the range of 4000–450[Formula: see text]cm[Formula: see text]. Mechanical properties of the grown crystal were studied using Vickers microhardness tester. The optical properties of grown crystal were investigated using UV–Vis NIR spectrum analysis and it is confirmed that the crystal has very low absorption in the entire visible region. The dislocations and defects were studied by photoluminescence spectrum. The crystal has single stage melting, which was observed at 180[Formula: see text]C and there was no decomposition before its melting point. Piezoelectric, photoconductivity and chemical etching analysis have also been performed on the grown NT single crystals and the observed results were discussed. Nonlinear optical property of the material was measured using the powder Kurtz–Perry technique.

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