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Fourier-transform infrared and photoluminescence spectroscopies of self-assembled monolayers of long-chain thiols on (001) GaAs
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10.1063/1.2178659
/content/aip/journal/jap/99/5/10.1063/1.2178659
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/5/10.1063/1.2178659
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Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of the chemical structure of thiols investigated in this work: 1-hexadecanethiol (HDT), 16-mercaptohexadecanoic acid (MHDA), 11-mercaptoundecanoic acid (MUDA), 1-undecanethiol (UDT), 11-mercapto-1-undecanol (MUDO), and cysteamine (CYS).

Image of FIG. 2.
FIG. 2.

Configuration of the attenuated total reflection measurements.

Image of FIG. 3.
FIG. 3.

ATR-FTIR spectroscopy of a (001) GaAs reference sample obtained with a freshly cleaned Ge prism.

Image of FIG. 4.
FIG. 4.

ATR-FTIR spectroscopy of SAMs of various length chain thiols on (001) GaAs: (a) , (b) , (c) , (d) , and (e) .

Image of FIG. 5.
FIG. 5.

Schematic diagram illustrating the strength of the interaction between the dipolar moment of symmetrical methylene stretching vibration and the electric field vector of the evanescent wave at the GaAs-thiol interface.

Image of FIG. 6.
FIG. 6.

Anticipated orientations of alkyl chains in SAMs of various thiols deposited on (001) GaAs.

Image of FIG. 7.
FIG. 7.

Photoluminescence spectra of freshly etched (001) GaAs and samples covered with SAMs of different thiols.

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/content/aip/journal/jap/99/5/10.1063/1.2178659
2006-03-10
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fourier-transform infrared and photoluminescence spectroscopies of self-assembled monolayers of long-chain thiols on (001) GaAs
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/5/10.1063/1.2178659
10.1063/1.2178659
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