Self-assembled monolayers of octadecanoic acid on indium arsenide

Self-assembled monolayers (SAMs) of octadecanoic acid (ODA) on oxidized InAs were prepared and characterized, and their stability in ambient, solvents and against heating was investigated. Results confirm the formation of densely packed, well-ordered monolayers. Storage of ODA SAMs in ambient does n...

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Veröffentlicht in:	Surface science 2010-07, Vol.604 (13), p.1166-1172
Hauptverfasser:	Knoben, Wout, Brongersma, Sywert H., Crego-Calama, Mercedes
Format:	Artikel
Sprache:	eng
Schlagworte:	Carboxylic acid Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Degradation Exact sciences and technology Heating Indium arsenide Indium arsenides Monolayers Oxidation Physics Self-assembled monolayers Self-assembly Solvents Stability Thermal desorption X-ray photoelectron spectroscopy
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Beschreibung
Zusammenfassung:	Self-assembled monolayers (SAMs) of octadecanoic acid (ODA) on oxidized InAs were prepared and characterized, and their stability in ambient, solvents and against heating was investigated. Results confirm the formation of densely packed, well-ordered monolayers. Storage of ODA SAMs in ambient does not lead to any noticeable degradation for months. ODA can be rinsed off the surface by some organic solvents, but SAMs are stable in water. ODA SAMs are stable up to 120 °C in ambient, above which temperature ODA starts to desorb. Above 200 °C, oxidation of the InAs substrate occurs.
ISSN:	0039-6028 1879-2758
DOI:	10.1016/j.susc.2010.03.032