Epitaxial growth and optical characterization of InAs/InGaAsP/InP self-assembled quantum dots

2001 ◽  
Vol 78 (9) ◽  
pp. 1171-1173 ◽  
Author(s):  
Weon G. Jeong ◽  
P. Daniel Dapkus ◽  
U. H. Lee ◽  
J. S. Yim ◽  
D. Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Epitaxial Growth ◽  
Optical Characterization ◽  
Self Assembled

Structural and optical characterization of self-assembled InAs-GaAs quantum dots grown on high index surfaces

1997 ◽  
Vol 28 (8-10) ◽  
pp. 933-938 ◽  
Author(s):  
M. Henini ◽  
S. Sanguinetti ◽  
L. Brusaferri ◽  
E. Grilli ◽  
M. Guzzi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Characterization ◽  
High Index ◽  
Self Assembled

Structural and optical characterization of InAs/InGaAs self‐assembled quantum dots grown on (311)BGaAs

1996 ◽  
Vol 80 (6) ◽  
pp. 3466-3470 ◽  
Author(s):  
Kenichi Nishi ◽  
Richard Mirin ◽  
Devin Leonard ◽  
Gilberto Medeiros‐Ribeiro ◽  
Pierre M. Petroff ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Characterization ◽  
Self Assembled

Optical characterization of thermally annealed self-assembled ZnCdSe quantum dots

2007 ◽  
Vol 4 (9) ◽  
pp. 3280-3288
Author(s):  
E. Margapoti ◽  
L. Worschech ◽  
S. Mahapatra ◽  
T. Slobodskyy ◽  
A. Tribu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Characterization ◽  
Self Assembled

Molecular beam epitaxial growth of InAs self-assembled quantum dots with light-emission at 1.3μm

2000 ◽  
Vol 208 (1-4) ◽  
pp. 93-99 ◽  
Author(s):  
Y Nakata ◽  
K Mukai ◽  
M Sugawara ◽  
K Ohtsubo ◽  
H Ishikawa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Epitaxial Growth ◽  
Molecular Beam ◽  
Light Emission ◽  
Molecular Beam Epitaxial ◽  
Self Assembled ◽  
Molecular Beam Epitaxial Growth

Deep level transient spectroscopy characterization of InAs self-assembled quantum dots

2001 ◽  
Vol 89 (2) ◽  
pp. 1172-1174 ◽  
Author(s):  
V. V. Ilchenko ◽  
S. D. Lin ◽  
C. P. Lee ◽  
O. V. Tretyak
Keyword(s):  
Quantum Dots ◽  
Deep Level Transient Spectroscopy ◽  
Deep Level ◽  
Self Assembled ◽  
Transient Spectroscopy

L-cysteine functionalized graphene quantum dots for sub-ppb detection of As (III)

2021 ◽  
Author(s):  
Md. Farhan Naseh ◽  
Neelam Singh ◽  
Jamilur R. Ansari ◽  
Ashavani Kumar ◽  
Tapan Sarkar ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Quantum Dots ◽  
Room Temperature ◽  
Graphene Quantum Dots ◽  
Optical Characterization ◽  
Functionalized Graphene ◽  
Transmission Electron ◽  
Sensitivity And Selectivity ◽  
Structural Characterizations

Abstract Here, we report functionalized graphene quantum dots (GQDs) for the optical detection of arsenic at room temperature. GQDs with the fluorescence of three fundamental colors (red, green, and blue) were synthesized and functionally capped with L-cysteine (L-cys) to impart selectively towards As (III) by exploiting the affinity of L-cys towards arsenite. The optical characterization of GQDs was carried out using UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy, and fluorescence spectrometry and the structural characterizations were performed using transmission electron microscopy. The fluorescence results showed instantaneous quenching in intensity when the GQDs came in contact with As (III) for all test concentrations over a range from 0.025 ppb to 25 ppb, which covers the permissible limit of arsenic in drinking water. The experimental results suggested excellent sensitivity and selectivity towards As (III).

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