Type

Journal Article

Authors

Colm O'Dwyer
Arnaud Etcheberry
Justin D. Holmes
Damien Aureau
Gillian Collins

Subjects

Chemistry

Topics
ge 111 oxide citric acid ftir germanium surface treatment xps fourier transform infrared spectroscopy ge nanowires stability silicon nanoparticles x ray photoelectron spectroscopy removal surface functionalization passivation

Germanium oxide removal by citric acid and thiol passivation from citric acid-terminated Ge(100). (2014)

Abstract 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 X-ray 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.
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Full list of authors on original publication

Colm O'Dwyer, Arnaud Etcheberry, Justin D. Holmes, Damien Aureau, Gillian Collins

Experts in our system

1
Colm O'Dwyer
University College Cork
Total Publications: 121
 
2
Justin D. Holmes
University College Cork
Total Publications: 182
 
3
Gillian Collins
University College Cork
Total Publications: 22