Gold cleaning methods for electrochemical detection applications
Research output: Contribution to journal › Article
Abstract
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.
Details
| Authors | |
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| External organisations |
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| Research areas and keywords | Subject classification (UKÄ) – MANDATORY
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| Original language | English |
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| Pages (from-to) | 1282-1285 |
| Journal | Microelectronic Engineering |
| Volume | 86 |
| Issue number | 4-6 |
| Publication status | Published - 2009 |
| Publication category | Research |
| Peer-reviewed | Yes |
| Externally published | Yes |
Bibliographic note
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)
