Spatially Resolved Functional Group Analysis of OLED Materials Using EELS and ToF-SIMS.

ABSTRACT: Electron energy-loss spectroscopy (EELS) is widely used in analyzing the electronic structure of inorganic materials at high spatial resolution. In this study, we use a monochromator to improve the energy resolution, allowing us to analyze the electronic structure of organic light-emitting diode (OLED) materials with greater precision. This study demonstrates the use of the energy-loss near-edge structure to map the nitrogen content of organic molecules and identify the distinct bonding characteristics of aromatic carbon and pyridinic nitrogen. Furthermore, we integrate EELS with time-of-flight secondary ion mass spectrometry for molecular mapping of three different bilayers composed of OLED materials. This approach allows us to successfully map functional groups in the by-layer OLED and m

SUBMITTER: Dae KS 

PROVIDER: S-EPMC11307249 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature