Solar Energy Materials and Solar Cells, volume 108, pages 252-255

Guided assembly of quantum dots through selective laser heating

Casey M Clegg 1
Haeyeon Yang 1
1
 
Nanoscience and Nanoengineering Department, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
Publication typeJournal Article
Publication date2013-01-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor6.9
ISSN09270248, 18790248
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Abstract
We report the self-assembly of InGaAs quantum dots (QDs) grouped along lines on semiconductor surfaces. Nanoscale spatial thermal modulations were created in-situ on strained-but-flat InGaAs surfaces in a Molecular Beam Epitaxy (MBE) growth chamber by employing interferential irradiations of high power laser pulses. As-irradiated surfaces were examined using an attached ultra-high vacuum Scanning Tunneling Microscope (STM). STM images indicate that the irradiation induces self-assembly of QDs. The average size of laser-induced QDs is smaller while their density is larger than that of QDs formed by the typical Stranski–Krastanov (S–K) growth mode. Furthermore, the dot density is modulated sinusoidally with a periodicity commensurate with that of the interference, which suggests that the placement of QDs can be controlled on the scale of the optical wavelength used.

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Clegg C. M., Yang H. Guided assembly of quantum dots through selective laser heating // Solar Energy Materials and Solar Cells. 2013. Vol. 108. pp. 252-255.
GOST all authors (up to 50) Copy
Clegg C. M., Yang H. Guided assembly of quantum dots through selective laser heating // Solar Energy Materials and Solar Cells. 2013. Vol. 108. pp. 252-255.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.solmat.2012.09.011
UR - https://doi.org/10.1016/j.solmat.2012.09.011
TI - Guided assembly of quantum dots through selective laser heating
T2 - Solar Energy Materials and Solar Cells
AU - Clegg, Casey M
AU - Yang, Haeyeon
PY - 2013
DA - 2013/01/01 00:00:00
PB - Elsevier
SP - 252-255
VL - 108
SN - 0927-0248
SN - 1879-0248
ER -
BibTex
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BibTex Copy
@article{2013_Clegg,
author = {Casey M Clegg and Haeyeon Yang},
title = {Guided assembly of quantum dots through selective laser heating},
journal = {Solar Energy Materials and Solar Cells},
year = {2013},
volume = {108},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016/j.solmat.2012.09.011},
pages = {252--255},
doi = {10.1016/j.solmat.2012.09.011}
}
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