XPS Archives

Analysis of CIGS Thin Film PV

CIGS Thin Film PV performance reliability and uniformity as manufacturing is scaled up, can be optimized using materials characterization.

Ask the Experts: Auger, TOF-SIMS, XPS

Surface chemistry affects multiple properties including adhesion, wettability, appearance and cleanliness. Auger, TOF-SIMS and XPS are often used to understand chemistry in the top few nanometers of a sample surface.

Atomic Layer Deposition (ALD) Analysis

Atomic layer deposition analysis helps you meet ALD specifications for composition, thickness, and crystallinity.

This plot shows GDMS data acquired from eight LiFePO4 cathode samples from a range of suppliers.

Battery Technology

Battery materials characterization services includes analysis of raw materials, surface chemistry, composition, morphology and uniformity

Table 1 Concentration of Elements Detected on Failed Surfaces (in atom%)

Cause and Location of Delamination of Multi-layer Metal Foil by XPS

Laminate failure : Multi-layer laminate by analysis by XPS. Investigation details adhesive failure at a Ni2Mo-Cu interface due to monolayer contamination.

Characterization of Bioceramics for Surgical Implants: Part I – Precursor Qualification

This paper will demonstrate how analytical tools can be used for the quality control of hydroxyapatite and β-tricalcium phosphate powders

Coatings on glass

Investigation of the layer structure, identity and composition of an unknown coating system can be done in several ways.

Coffee & Conversations: Contamination Measurements

November 2, 2023
Please join us for coffee and conversations! Enjoy a cup of coffee and pastries as you get to know our technical experts.

Coffee & Conversations: Materials Identification

February 15, 2024
Please join us for coffee and conversations! Enjoy a cup of coffee and pastries as you get to know our technical experts.

Coffee and Conversations – Thin Film Characterization

May 15, 2024
Please join us for coffee and conversations! Enjoy a cup of coffee and pastries as you get to know our technical experts.

Survey scans below show a common hydrogel lens material (poly hydroxyethylmethacrylate (HEMA) without (Figure 1) and with (Figure 2) the incorporation of a hydrophilic polyvinylpyrrolidone (PVP) co-polymer. It is clear that XPS can detect PVP based on the nitrogen in the PVP-containing lens.

Contact Lenses: Understanding Surface Chemistry Critical to Optimizing Design

EAG Laboratories helps you understand contact lenses surface chemistry, critical to optimizing design and engineering optimal performance.

Essentials of Particulate Testing: USP <788> and AAMI TIR42

Essentials of Particulate Testing: USP <788> and AAMI TIR42 While there are many standards available for particulate testing, USP <788> and AAMI TIR42 are the

Evaluation of Cleaning Efficacy

The XPS surface analysis tool ensures evaluation of cleaning efficacy to monitor contamination efficiency.

Glass Delamination in Pharmaceutical Vials Related to Surface Chemical Changes

Application of SIMS, XPS/ESCA, SEM and ICP-MS to test for appearance of glass lamellae in parenteral pharmaceutical solutions, by EAG

How Clean is Your Reliability Chamber?

A concern with Stress testing of electronic devices is the potential contamination of devices by a poorly maintained or cleaned chamber.

Hydrogen, Carbon, Oxygen and Iron Contamination Measurements in ALD Films using XPS and SIMS

ALD for semiconductors can produce films that are high in H, C, O and metals. XPS and SIMS depth profile analysis for composition & purity.

Download "Structural and Chemical Characterization of Li-Ion Batteries"

Improving Performance and Safety of Lithium-Ion Batteries: Characterizing Materials and Interfaces

Battery characterization improves lithium-ion battery safety and performance using techniques such as SEM, TEM, XPS, GDMS, FTIR, ICP-OES, Raman and failure analysis

LED Analysis

LED characterization, from process control to failure analysis to construction analysis, EAG Laboratories supports your LED analysis needs.

Multiscale assessment on the quality of metal powder feedstocks for additive manufacturing

Additive manufacturing produces parts with geometric complexity, material composition gradient control, and lightweight structure design.

Oleophobic Coatings on Cellphone Screens

One of our surface analysis techniques, TOF-SIMS, can be used to characterize the surface coatings on screens and to compare the thickness of the coatings using depth profiles.

Particle Analysis Services

Particle analysis helps with black speck analysis, contamination identification, particulate analysis, identification of unknown materials.

Pigmented contact lenses

The contact lens market has expanded beyond its original goal of vision correction to include products with decorative qualities.

In this example, XPS is used to quantify the amount of a COX inhibitor (Indomethacin, C19H16ClNO4) spray dried with a triblock co-polymer of polyethylene glycol –polypropylene glycol- polyethylene glycol (Poloxamer 407) and sodium carboxymethyl cellulose (CMC).

Quantification of Active Pharmaceutical Ingredients by XPS

API Quantification on the Surface of Pharmaceuticals can be done by X-ray Photoelectron Spectroscopy (XPS) from EAG Laboratories.

Figure 1 Schematic of PE-EAA – PE laminate showing failure location.

Root Cause Determination of Adhesion Failure in Medical Device Packaging

XPS and TOF-SIMS to solve adhesive failure of a polyethylene-ethylene acrylic acid (co-polymer) heat seal to polyethylene in a medical device.

Self-assembled Monolayers

Self-Assembled Monolayers (SAMs) are used in molecular recognition, surface engineering, micro-contact printing and molecular electronics.

The schematic of a common Si solar cell structure above illustrates some of the ways that surface analysis can help. Note that cell structures with efficiencies in the 20% range have key differences.

Silicon Wafer PV – Application Discussion

Silicon wafer solar cells and the analytical techniques used to investigate failures, bulk defects and other materials characterization.

SIMS Characterization of Atomic Layer Deposition in Electronic Applications

Atomic Layer Deposition technology aids in the demand for computational advancement in the microelectronics industry.

Structural and Chemical Characterization of Li-ion Batteries

Structural and Chemical Characterization of Li-ion Batteries help to understand why batteries fail leading to safer products and improvements.

The schematic of the α-Si thin film PV (generic name for all the combined films) illustrates some of the ways surface analysis can help.

Surface Analysis of α-Si, µc-Si Thin Film PV

Surface analysis lab techniques on α-Si thin film PV, microcrystalline Si, nanocrystalline Si, amorphous SiGe, & microcrystalline SiC

Surface Analysis on 3D Printed Titanium

For 3D printed products, XPS can provide composition and bonding information for the top 5-10nm sample surfaces. Oftentimes, surface contamination/oxide thickness would affect the appearance (as well as performance when applicable) of the material, and XPS could help identify the source and/or cause.

Surface Analysis Webinar

In this webinar we introduce analytical techniques used by EAG for surface analysis – XPS, Auger and TOF-SIMS

Figure 1 X-ray Photoelectron spectra of untreated and plasma treated polystyrene showing evidence of O and N on the treated film

Surface and Interface Characterization of Polymers

Analytical tools to understand chemical properties of polymers for adhesion, printability, barrier performance, appearance and strength

Surface Characterization of Antibacterial Coated Sutures

Antibacterial coated sutures reduce the occurrence of surgical site infections. Triclosan has been used in coatings on poliglecaprone.

Surface Characterization of Antibacterial Coated Sutures

Cold stage analysis has been shown to be effective for samples that are not solids at room temperature or that have components that are volatile in a vacuum system, such as the antibacterial coated sutures.

Surface Chemistry and Composition in Battery Manufacturing

Measuring the chemical state of the battery components such as the cathode, anode, separator, electrolyte, contact layers and additives, at various stages of cycling, provides vital information about the electrochemical processes that occur during battery use.

contamination control on compound semiconductor

Surface Contamination on Compound Semiconductors

Contamination control and defect reduction are critical issues in the manufacturing process of compound semiconductor devices which can impact the performance of the end product. We can provide valuable insights to identify contaminants and characterize materials throughout the product lifecycle.

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