Peer-Reviewed Journal Details
Mandatory Fields
Collins, G.; Aureau, D.; Holmes, J. D.; Etcheberry, A.; O’Dwyer, C.
2014
December
Langmuir
Germanium oxide removal by citric acid and thiol passivation from citric acid terminated Ge(100)
Published
WOS: 26 ()
Optional Fields
30
47
14123
14127
Many applications of germanium (Ge) are underpinned by effective oxide removal and surface passivation. This important surface treatment step often requires H−X (X = Cl, Br, I) or HF etchants. Here, we show that aqueous citric acid solutions are effective in the removal of GeOx. The stability of citric acid treated Ge(100) is compared to HF and HCl treated surfaces and analyzed by Xray photoelectron spectroscopy. Further Ge surface passivation was investigated by thiolation using alkane monothiols and dithiols. The organic passivation layers show good stability with no oxide regrowth observed after 3 days of ambient exposure.
Washington, DC, USA
http://pubs.acs.org/journal/langd5
10.1021/la503819z
Grant Details