一般財団法人材料科学技術振興財団　MST List of Products and Services

Applications of carbon materials, such as graphene in electron emission devices and hydrogen storage in carbon nanotubes, are increasing in vacuum environments. Therefore, evaluating the outgassing from carbon materials in vacuum is an important point for the future applications of these materials. This case study introduces an example of outgassing analysis from graphene using TDS (Thermal Desorption Spectroscopy), which can evaluate outgassing from samples in a vacuum.

By measuring the sample, it is possible to evaluate the crystal structure through the combination of results obtained and simulations. This document introduces a case study in which the crystal structure is discussed by comparing the results obtained from HAADF-STEM and EDX measurements on polycrystalline neodymium magnets with simulated images using the respective measurement conditions. The combination of measurement results and computational simulation results allows for a deeper understanding of the crystal structure.

Perovskite solar cells have excellent conversion efficiency in a film form and can be manufactured at low cost, leading to active research and development towards practical application. TOF-SIMS (Time-of-Flight Secondary Ion Mass Spectrometry) is effective for component analysis of the HTM layer (hole transport layer), evaluation of main components, dopants, and the depth distribution of impurities. This document presents a case study of depth analysis from the HTM layer to the perovskite layer. Measurement method: TOF-SIMS Product field: Solar cells Analysis purpose: Identification, distribution evaluation For more details, please download the document or contact us.

Perovskite solar cells are composed of various types of organic materials depending on their purpose and role. This document presents an example of qualitative analysis of organic materials using LC/MS. By utilizing high-resolution MS spectra and MS/MS spectra, we were able to identify hole transport materials and additives in the hole transport layer. It is also possible to quantify the identified materials by comparing between samples or using standard samples. Measurement method: LC/MS Product field: Solar cells Analysis purpose: Composition evaluation and identification For more details, please download the document or contact us.

Environmental Testing Evaluates the resistance of electronic components and devices when subjected to environmental stress. Reliability Evaluation Testing Assesses items related to the reliability and safety of the product.

In HAXPES, hard X-rays (Ga radiation) are used for excitation, which results in different positions of the Auger peaks compared to the Al and Mg radiation typically used in standard XPS measurements. Therefore, even in samples where the photoelectron peaks and Auger peaks overlap in Al and Mg measurements, this overlap can be avoided in Ga measurements, allowing for a detailed evaluation of the bonding states. This document presents the spectra of Kovar (an alloy of Fe, Ni, and Co) and GaN measured using Ga radiation (equipped with HAXPES) and Al and Mg radiation (equipped with XPS).

High-resolution HAADF-STEM images reflect the atomic arrangement of crystals, and by simulating STEM images corresponding to various crystal orientations, they help in accurately understanding the relative orientations between crystal grains and the observed images in polycrystalline materials. This document presents a case where STEM images were simulated from the crystal orientation information obtained by the EBSD method for the crystal grains in a polycrystalline neodymium magnet, and compares them with actual high-resolution HAADF-STEM images.

Perovskite solar cells are expected to be the next generation of solar cells due to their lightweight and flexible characteristics. They contain organic structures, halogens, and metals, and the variations in their composition and crystallinity lead to changes in their properties, which is considered one of the challenges in the research and development of perovskite solar cells. In this study, we evaluated the differences in photoluminescence (PL) spectra and luminescence lifetimes between the normal and abnormal areas of perovskite solar cells subjected to high-temperature and high-humidity testing using PL measurement and fluorescence lifetime measurement devices.