651818
Gold etchant, standard
Synonym(s):
Antistrumin, Potassium monoiodide
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About This Item
Solubility:
H2O: miscible
composition
volatiles, 50-80%
Quality Level
bp
100 °C (lit.), 100 °C/1 atm
solubility
H2O: miscible
density
1.2924 g/mL at 25 °C (lit.)
SMILES string
[K+].[I-]
InChI
1S/HI.K/h1H;/q;+1/p-1
InChI key
NLKNQRATVPKPDG-UHFFFAOYSA-M
General description
Gold etchant is a combination of potassium iodide and iodine as complexing agents synthesized by electrochemically oxidizing gold.
Etching readily controlled with minimum undercutting. Room temperature operated. Cyanide-free for standard applications. Etch rate of 28 angstrom/sec @ 25 °C.
Application
Gold etchant is a selective general-purpose etchant for gold, compatible with negative and positive photoresists. It is used to etch out gold (Au) electrodes prior to scanning electron microscopy (SEM) imaging for morphological study and metal layer for the preparation of nanoelectrodes array. Gold etchant can also be used in metal assisted chemical etching (MACE) for the fabrication of p-n junction silicon nanopillar based solar cells.
signalword
Danger
target_organs
Thyroid
Storage Class
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
ppe
Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)
hcodes
Hazard Classifications
Eye Irrit. 2 - Repr. 1B - STOT RE 2
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Protocols
Photoresist kit offers pre-weighed chemical components for lithographic processes, with separate etchants for various substrate choices.
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Technical Bulletins
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Park H, et al.
Journal of Material Chemistry C, 3(10), 2366-2370 (2015)
Cyanide-and thiourea-free electrochemical etching of gold for microelectronics applications.
Hu Z and Ritzdorf T
Journal of the Electrochemical Society, 154(10), D543-D549 (2007)
High performance nanopillars array silicon solar cells.
Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP), 117(10), 1-5 (2013)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 651818-2.5L | 04065274193533 |
| 651818-500ML | 04061832732640 |