CHEMISTRY OF HNO3 ON GE(100)

Citation
A. Avoyan et al., CHEMISTRY OF HNO3 ON GE(100), JOURNAL OF PHYSICAL CHEMISTRY B, 102(26), 1998, pp. 5069-5076
Citations number
26
Categorie Soggetti
Chemistry Physical
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
102
Issue
26
Year of publication
1998
Pages
5069 - 5076
Database
ISI
SICI code
1089-5647(1998)102:26<5069:>2.0.ZU;2-H
Abstract
We describe here the initial bonding geometry and decomposition mechan ism of HNO3 on Ge(100). A combination of high-resolution electron ener gy loss spectroscopy, Auger electron spectroscopy, and temperature pro grammed desorption experiments have been used to shed light on the det ails of this complex but technologically important system. It was foun d that HNO3 adsorbs molecularly at 190 K in a predominantly bidentate bonding configuration. When the substrate is warmed to 425 K, the mole cule decomposes. In a process that involves two adjacent HNO3 adsorbat es, H2O and NO desorb while O remains on the surface. Further heating above 600 K causes the O to desorb as GeO.