Auger Electron Spectroscopy for Quantitative Analysis

By identifying corrosive elements or organic impurities, elemental analysis technologies like Auger electron spectroscopy can provide qualitative information about a substance's composition. For regulatory compliance or specific material composition requirements, quantitative analysis is important. Software is used in Auger electron spectroscopy to compute element weights and percentages while taking into account sensitivity factors that account for variations in elemental behaviour. These sensitivity characteristics must be taken into consideration for accurate quantitative analysis.

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Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

Auger Electron Spectroscopy (AES) is an electron-based technique that is used for figuring out what an object is made of, down to the nanometre level, with an emphasis on what’s on the surface. AES is particularly good at determining what’s on the very top atomic layers of an object’s surface.

It’s done by directing a narrow beam of electrons at the object’s surface, causing Auger electrons to be ejected from the object. The key is that the energy level of these emitted electrons is related to what’s in the object’s material. By measuring the energy level and strength of these emitted electrons, you can determine not just what’s in the object’s material (qualitative), but how much of that material is present (quantitative).

Scope, Applications, and Benefits

Scope

Auger Electron Spectroscopy (AES) is an analytical technique used to determine the kinds of materials present on the surface of conductive or semiconductive materials. It does this by capturing Auger electrons emitted when the surface is bombarded by an electron stream. Auger Electron Spectroscopy is best used to analyse the very top surface of a material, which is 1 to 10 nanometres thick.

The most common applications of Auger Electron Spectroscopy include:

– Surface elemental composition
– Thin film composition
– Contamination detection
– Surface chemical composition
– Depth profiling

Applications

Semiconductor surface analysis
Thin film characterisation
Surface contamination analysis
Failure analysis of electronic components
Corrosion studies
Coating and interface analysis
Microelectronics manufacturing
Metallurgical surface evaluation

Benefits

Extremely surface-sensitive technique
High spatial resolution for micro-area analysis
Quantitative elemental composition measurement
Capability for depth profiling of thin layers
Detection of surface contamination and impurities
Non-destructive analysis for many materials
High sensitivity for trace elements on surfaces

Test Process

Sample Preparation

The sample surface is cleaned and placed in an ultra-high vacuum chamber.

Electron Beam Excitation

A focused electron beam is directed onto the sample surface.

Auger Electron Detection

Emitted Auger electrons are collected and their energies are analyzed.

Quantitative & Depth Analysis

Elemental composition is calculated, with optional depth profiling by sputtering.

Technical Specifications

Parameter	Details
Analysis Depth	1–10 nm (surface layers)
Spatial Resolution	Typically 10–100 nm
Detectable Elements	Most elements except hydrogen and helium
Analysis Type	Qualitative and quantitative elemental analysis
Sample Environment	Ultra-high vacuum (UHV) conditions
Output Data	Electron energy spectrum and elemental concentration

Instrumentation Used for Testing

Auger Electron Spectrometer
Electron gun (primary electron source)
Electron energy analyser
Ultra-high vacuum chamber
Ion sputter gun for depth profiling
Sample stage with positioning control
Surface cleaning system
Computer-based data acquisition software

Results and Deliverables

Surface elemental composition
Quantitative elemental concentration data
Auger electron energy spectrum
Surface contamination identification
Elemental depth profiling results
Thin film and coating composition analysis
Comparative surface analysis reports

Why Choose Infinita Lab for Auger Electron Spectroscopy?

Infinita Lab is a leading provider of Auger Electron Spectroscopy and streamlined material testing services, addressing the critical challenges faced by emerging businesses and established enterprises. With access to a vast network of over 2,000+ accredited partner labs across the United States, Infinita Lab ensures rapid, accurate, and cost-effective testing solutions. The company’s unique value proposition includes comprehensive project management, confidentiality assurance, and seamless communication through a Single Point of Contact (SPOC) model. By eliminating inefficiencies in traditional material testing workflows, Infinita Lab accelerates research and development (R&D) processes.

Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote

Frequently Asked Questions

AES provides both qualitative and quantitative information about the elemental composition of a material’s surface, including contamination, thin film composition, and elemental distribution.

AES is commonly used for metals, semiconductors, thin films, coatings, ceramics, and microelectronic components. It works best with conductive or semi-conductive materials.

AES is extremely surface sensitive and typically analyses only the top 1–10 nanometres of the material surface.

AES is widely used in semiconductor manufacturing, microelectronics, materials science, metallurgy, nanotechnology, and surface engineering industries.

Depth profiling involves removing surface layers using ion sputtering while repeatedly performing AES analysis to determine the composition of layered materials as a function of depth.