GaAs Quantum Dots

A. J. Nozik; H. Uchida; P. V. Kamat; C. Curtis

doi:10.1002/ijch.199300004

GaAs Quantum Dots

A. J. Nozik, H. Uchida, P. V. Kamat, C. Curtis

Chemistry and Nanoscience

Research output: Contribution to journal › Article › peer-review

16 Scopus Citations

Abstract

GaAs quantum dots have been prepared by reacting gallium acetylacetonate with trimethylsilylarsine in triethylene glycol ether at 216 K. The colloidal dispersion of GaAs nanocrystals has been characterized by transmission electron microscopy, electron diffraction, ultrafiltration, optical absorption and photoluminescence spectroscopy, and transient pump‐probe spectroscopy; the spectral data were also fitted to a model that accounts for the size‐dependent optical properties of a Gaussian distribution of particle sizes. Our results indicate that the spectral region above 470 nm can be assigned solely to GaAs nanocrystals having a mean diameter of 40.0 Å with a standard deviation of 9.7 Å. The origin of spectral features below 470 nm has not yet been determined conclusively.

Original language	American English
Pages (from-to)	15-20
Number of pages	6
Journal	Israel Journal of Chemistry
Volume	33
Issue number	1
DOIs	https://doi.org/10.1002/ijch.199300004 https://doi.org/10.1002/ijch.199300004
State	Published - 1993

NREL Publication Number

NREL/JA-453-5796

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@article{3b3b20b2423f4c34b1a12ccc3d4d3fa3,

title = "GaAs Quantum Dots",

abstract = "GaAs quantum dots have been prepared by reacting gallium acetylacetonate with trimethylsilylarsine in triethylene glycol ether at 216 K. The colloidal dispersion of GaAs nanocrystals has been characterized by transmission electron microscopy, electron diffraction, ultrafiltration, optical absorption and photoluminescence spectroscopy, and transient pump‐probe spectroscopy; the spectral data were also fitted to a model that accounts for the size‐dependent optical properties of a Gaussian distribution of particle sizes. Our results indicate that the spectral region above 470 nm can be assigned solely to GaAs nanocrystals having a mean diameter of 40.0 {\AA} with a standard deviation of 9.7 {\AA}. The origin of spectral features below 470 nm has not yet been determined conclusively.",

author = "Nozik, {A. J.} and H. Uchida and Kamat, {P. V.} and C. Curtis",

year = "1993",

doi = "10.1002/ijch.199300004",

language = "American English",

volume = "33",

pages = "15--20",

journal = "Israel Journal of Chemistry",

issn = "0021-2148",

publisher = "Wiley-Blackwell",

number = "1",

}

TY - JOUR

T1 - GaAs Quantum Dots

AU - Nozik, A. J.

AU - Uchida, H.

AU - Kamat, P. V.

AU - Curtis, C.

PY - 1993

Y1 - 1993

N2 - GaAs quantum dots have been prepared by reacting gallium acetylacetonate with trimethylsilylarsine in triethylene glycol ether at 216 K. The colloidal dispersion of GaAs nanocrystals has been characterized by transmission electron microscopy, electron diffraction, ultrafiltration, optical absorption and photoluminescence spectroscopy, and transient pump‐probe spectroscopy; the spectral data were also fitted to a model that accounts for the size‐dependent optical properties of a Gaussian distribution of particle sizes. Our results indicate that the spectral region above 470 nm can be assigned solely to GaAs nanocrystals having a mean diameter of 40.0 Å with a standard deviation of 9.7 Å. The origin of spectral features below 470 nm has not yet been determined conclusively.

AB - GaAs quantum dots have been prepared by reacting gallium acetylacetonate with trimethylsilylarsine in triethylene glycol ether at 216 K. The colloidal dispersion of GaAs nanocrystals has been characterized by transmission electron microscopy, electron diffraction, ultrafiltration, optical absorption and photoluminescence spectroscopy, and transient pump‐probe spectroscopy; the spectral data were also fitted to a model that accounts for the size‐dependent optical properties of a Gaussian distribution of particle sizes. Our results indicate that the spectral region above 470 nm can be assigned solely to GaAs nanocrystals having a mean diameter of 40.0 Å with a standard deviation of 9.7 Å. The origin of spectral features below 470 nm has not yet been determined conclusively.

UR - http://www.scopus.com/inward/record.url?scp=85005461694&partnerID=8YFLogxK

U2 - 10.1002/ijch.199300004

DO - 10.1002/ijch.199300004

M3 - Article

AN - SCOPUS:85005461694

SN - 0021-2148

VL - 33

SP - 15

EP - 20

JO - Israel Journal of Chemistry

JF - Israel Journal of Chemistry

IS - 1

ER -

GaAs Quantum Dots

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