GDOES combines a glow discharge (GD) from a plasma with an optical emission spectrometer (OES). This is an analytical technique that provides both the surface and depth profile of the bulk elemental composition of solid materials and layers quickly, and with high sensitivity to all elements.
A typical GD-ES instrument includes:
• A Glow Discharge source that creates a plasma used to sputter a sample and excite sputtered species
• An Optical Emission Spectrometer that collect the light, separated by wavelength, and measures the intensities
GD-OES can measure all elements from Hydrogen to Uranium, including Oxygen, Nitrogen, Carbon, Chlorine, Deuterium and is widely used for bulk analysis of metallic samples.
Under optimized conditions the crater shape on the sample, resulting from the sputtering, is flat allowing for depth profiling analysis with high depth resolution. GD-OES can be used for the characterization of coatings.
The capability of a technique to perform depth profiling from the first nanometer down to 150 μm deep into the materials can be of utmost importance for many applications including most advanced materials: lithium battery electrodes, photovoltaic cells, metals involving inorganic and organic coatings, heat sensitive materials, etc.
The GDOES in AEP Core has 36 PMT detectors and can measure 36 periodic table elements.
The list is the elements that can be detected with GDOES in AEP Core.
Capabilities
Ultra Fast Elemental Depth Profile Analysis
Tens on nm/second (but optical signals can be collected faster)
Thick & Thin films - from top surface down to 150μm with possibly nanometric depth resolution
Thickness real time measurement with DiP
Pulsed RF plasma source sputtering suitable for all multilayered solid materials
Synchronized acquisition with the pulses.
Applications
Films with metal and metal oxide particles
Electrodes of Li-ion batteries
Magnetron sputtering deposition
Organic and organic/inorganic multilayered materials
Mobile phone screen cover
Electroplated coating
Perovskite solar cells
Usage
Submit a service request in iLab.
Meet AEP Core representative to create appropriate recipe for the samples.
Measure the samples with GDOES.
- Emission Spectroscopy
| Service | ASU rate | Nonprofit/other academic rate | Private/ Industry | Notes |
|---|---|---|---|---|
| Automatic Film Applicator | $36/hour | $50/hour | Please contact AEPCore@asu.edu |
