Campus Units
Chemistry, Ames Laboratory
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
9-17-2020
Journal or Book Title
Journal of The American Society for Mass Spectrometry
DOI
10.1021/jasms.0c00153
Abstract
Organic light emitting devices (OLEDs), especially in a screen display format, present unique and interesting substrates for Laser Desorption/Ionization - Mass Spectrometry Imaging (LDI-MSI) analysis. These devices contain many compounds that inherently absorb light energy and do not require an additional matrix to induce desorption and ionization. OLED screens have lateral features with dimensions that are tens of microns in magnitude and depth features that are tens to hundreds of nanometers thick. Monitoring the chemical composition of these features is essential, as contamination and degradation can impact device lifetime. This work demonstrates the capability of LDI-MSI to obtain lateral and partial depth resolved information of multicolored OLED displays and suggests the application to other mixed organic electronics with minimal sample preparation. This was realized when analyzing two different manufactured OLEDs, in an active-matrix display format, with-out the need to remove the cathode. By utilizing low laser energy and high lateral spatial resolution imaging (10 µm), depth profiling can be observed while maintaining laterally resolved information resulting in a three-dimensional MSI approach that would complement existing OLED characterization methods.
Copyright Owner
American Chemical Society
Copyright Date
2020
Language
en
File Format
application/pdf
Recommended Citation
Paulson, Andrew E.; Forsman, Trevor T.; and Lee, Young Jin, "Three-Dimensional Profiling of OLED by Laser Desorption Ionization-Mass Spectrometry Imaging" (2020). Chemistry Publications. 1255.
https://lib.dr.iastate.edu/chem_pubs/1255
Comments
This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in Journal of The American Society for Mass Spectrometry, copyright © American Chemical Society after peer review. To access the final edited and published work see DOI: 10.1021/jasms.0c00153 Posted with permission.