Synthesis and characterization of AgGaS2 nanoparticles: a study of growth and fluorescence

2018 ◽  
Vol 54 (1) ◽  
pp. 62-65 ◽  
Author(s):  
Sky Paderick ◽  
Matthew Kessler ◽  
Tyler J. Hurlburt ◽  
Steven M. Hughes
Keyword(s):  
Band Gap ◽  
Synthesis And Characterization ◽  
Trap State ◽  
Gallium Sulfide ◽  
Sulfide Nanocrystals

Silver gallium sulfide nanocrystals demonstrate tunability for trap-state emission (650 nm) or band gap fluorescence (460 nm).

Synthesis and Characterization of an Anthracene-Based Low Band Gap Polymer for Photovoltaic Devices

2014 ◽  
Vol 14 (8) ◽  
pp. 6422-6426 ◽  
Author(s):  
In Hwan Jung ◽  
Hoyeon Kim ◽  
Wonho Lee ◽  
Byung Jun Jung ◽  
Han Young Woo ◽  
...  
Keyword(s):  
Band Gap ◽  
Synthesis And Characterization ◽  
Photovoltaic Devices ◽  
Low Band Gap ◽  
Low Band Gap Polymer

Synthesis and characterization of a low band gap polymer based on cyclopentadithiophene and thieno[3,4-b]thiophene

2018 ◽  
Vol 191 (1) ◽  
pp. 111-115
Author(s):  
Chuan-Tao Gu ◽  
Ya-Wei Miao ◽  
Yao-Wei Zhu ◽  
Meng Qiu ◽  
Hai-Lin Cong ◽  
...  
Keyword(s):  
Band Gap ◽  
Synthesis And Characterization ◽  
Low Band Gap ◽  
Low Band Gap Polymer

scholarly journals Green Synthesis and Characterization of Gallium(III) Sulphide (α-Ga2S3) Nanoparicles at Room Temperature

Nano Hybrids ◽  
2014 ◽  
Vol 6 ◽  
pp. 37-46 ◽  
Author(s):  
Tansir Ahamad ◽  
Saad M. Alshehri
Keyword(s):  
Green Synthesis ◽  
Band Gap ◽  
Raman Spectra ◽  
Room Temperature ◽  
Optical Band Gap ◽  
Blue Shift ◽  
Synthesis And Characterization ◽  
Spectroscopic Techniques ◽  
Sodium Thiosulphate

Two different batches of Gallium (III) sulphide nanocrystals, (α-Ga2S3)1 and (α-Ga2S3)2 were synthesized at room temperature by the reaction of Gallium (III) chloride with sodium thiosulphate in water for 10 and 20 min respectively. The resultant nanoparticles were characterized by different spectroscopic techniques. TEM micrographs showed well-defined, close to hexagonal particles, and the lattice fringes in the HRTEM images confirmed their nanocrystalline nature. The sizes of (α-Ga2S3)1 and (α-Ga2S3)2 were 12 and 35 nm respectively with similar morphologies. Optical band gap energies (3.43 eV/3.41 eV) and photoluminescence peaks 635/641 nm (red shift) and 414/420 nm (blue shift) of the synthesized α-Ga2S3 nanocrystals suggest that they may be promising photocatalysts. Raman spectra for the α-Ga2S3, shows very sharp bands at 119, 135 and 148 cm-1 due to Ga-S2 scissoring.

Synthesis and characterization of a mixture of CoFe2O4 and MgFe2O4 from layered double hydroxides: Band gap energy and magnetic responses

2014 ◽  
Vol 369 ◽  
pp. 249-259 ◽  
Author(s):  
Ulises A. Agú ◽  
Marcos I. Oliva ◽  
Sergio G. Marchetti ◽  
Angélica C. Heredia ◽  
Sandra G. Casuscelli ◽  
...  
Keyword(s):  
Band Gap ◽  
Layered Double Hydroxides ◽  
Band Gap Energy ◽  
Synthesis And Characterization ◽  
Gap Energy ◽  
Double Hydroxides

Synthesis and Characterization of Nanoparticulate Sols of TiO2 Doped with Erbium (III) for Photoinduced Applications

2012 ◽  
Vol 1442 ◽  
Author(s):  
M. Borlaf ◽  
R. Moreno ◽  
M. T. Colomer
Keyword(s):  
Band Gap ◽  
Isoelectric Point ◽  
Direct Evidence ◽  
Sol Gel ◽  
Common Method ◽  
Synthesis And Characterization ◽  
Major Phase ◽  
Point Increase

ABSTRACTColloidal sol-gel is a common method used for the preparation of stable and homogeneous nanoparticulate sols. In this work, TiO2 and Er3+ doped-TiO2 sols (1, 2 and 3 mole % Er3+) have been prepared. The peptization time, viscosity and isoelectric point increase at higher Er3+ concentration indicating that erbium (III) delays the peptization process, increases the viscosity and adsorbs onto the surface of the TiO2 nanoparticles. When the sols of TiO2 are doped with Er3+ lower values of the band gap are obtained. After drying, in all cases, anatase was obtained as major phase although traces of brookite are also detected. The microstructure was observed by TEM and shows direct evidence that the xerogels are polycrystalline.

Synthesis and Characterization of Poly{1,2-bis(2-seleninyl)ethene}, a Novel Electrically Conductive Polymer with Diminished Band Gap

1998 ◽  
Vol 31 (4) ◽  
pp. 1221-1228 ◽  
Author(s):  
S. C. Ng ◽  
H. S. O. Chan ◽  
T. T. Ong ◽  
K. Kumura ◽  
Y. Mazaki ◽  
...  
Keyword(s):  
Band Gap ◽  
Conductive Polymer ◽  
Synthesis And Characterization ◽  
Electrically Conductive
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