Ion beam analysis at cryogenic temperatures for polymer light emitting diodes

Abstract

The application of ion beam analysis on polymer light emitting diodes became possible by the development of a set-up which allows measurements at cryogenic temperatures (10–30 K). The set-up is equipped with a sample holder which combines compatibility with a load-lock, necessary for introduction of samples under controlled conditions, and a good thermal contact. A number of examples are reviewed in which interface stability and oxidation effects in poly-LEDs are studied with Rutherford backscattering spectrometry and elastic recoil detection.