Gold cleaning methods for electrochemical detection applications
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Gold cleaning methods for electrochemical detection applications. / Fischer, Lee M.; Tenje, Maria; Heiskanen, Arto R.; Masuda, Noriyuki; Castillo Leon, Jaime; Bentien, Anders; Emnéus, Jenny; Jakobsen, Mogens H.; Boisen, Anja.
I: Microelectronic Engineering, Vol. 86, Nr. 4-6, 2009, s. 1282-1285.Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift
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T1 - Gold cleaning methods for electrochemical detection applications
AU - Fischer, Lee M.
AU - Tenje, Maria
AU - Heiskanen, Arto R.
AU - Masuda, Noriyuki
AU - Castillo Leon, Jaime
AU - Bentien, Anders
AU - Emnéus, Jenny
AU - Jakobsen, Mogens H.
AU - Boisen, Anja
N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Biomedical Engineering (011200011), Analytical Chemistry (S/LTH) (011001004)
PY - 2009
Y1 - 2009
N2 - This work investigates methods for obtaining reliably clean gold film surfaces. Nine gold cleaning methods are investigated here: UV ozone photoreactor; potassium hydroxide–hydrogen peroxide; potassium hydroxide potential sweep; sulfuric acid hydrogen peroxide; sulfuric acid potential cycling; hydrochloric acid potential cycling; dimethylamine borane reducing agent solutions at 25 and 65 °C; and a dilute form of Aqua Regia. Peak-current potential-differences obtained from cyclic voltammetry and charge transfer resistance obtained from electrochemical impedance spectroscopy, as well as X-ray photo-electron spectroscopy are used to characterize surface cleanliness. A low peak-current potential-difference and charge transfer resistance indicates a cleaner surface, as does a higher percentage of elemental gold on the electrode surface. The potassium hydroxide potential sweep method is found to leave the gold surface the cleanest overall.
AB - This work investigates methods for obtaining reliably clean gold film surfaces. Nine gold cleaning methods are investigated here: UV ozone photoreactor; potassium hydroxide–hydrogen peroxide; potassium hydroxide potential sweep; sulfuric acid hydrogen peroxide; sulfuric acid potential cycling; hydrochloric acid potential cycling; dimethylamine borane reducing agent solutions at 25 and 65 °C; and a dilute form of Aqua Regia. Peak-current potential-differences obtained from cyclic voltammetry and charge transfer resistance obtained from electrochemical impedance spectroscopy, as well as X-ray photo-electron spectroscopy are used to characterize surface cleanliness. A low peak-current potential-difference and charge transfer resistance indicates a cleaner surface, as does a higher percentage of elemental gold on the electrode surface. The potassium hydroxide potential sweep method is found to leave the gold surface the cleanest overall.
U2 - 10.1016/j.mee.2008.11.045
DO - 10.1016/j.mee.2008.11.045
M3 - Article
VL - 86
SP - 1282
EP - 1285
JO - Microelectronic Engineering
JF - Microelectronic Engineering
SN - 1873-5568
IS - 4-6
ER -