Modeling the optical constants of organic thin films: Application to 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA)

Research output: Contribution to journalResearch articleContributedpeer-review



We model the optical constants of 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) using a modified Lorentz oscillator model and compare our results to the conventional Lorentz oscillator model. It is found that an adjustable broadening function incorporated in the modified Lorentz oscillator model should be used instead of a Lorentzian broadening function in the conventional oscillator model for modeling successfully the optical constants of organic materials. We attribute this to the assumption that each absorption peak is composed of a large number of individual transitions closely spaced in energy.


Original languageEnglish
Pages (from-to)123-132
Number of pages10
JournalOptics communications
Issue number1
Publication statusPublished - 1 Sept 2000

External IDs

Scopus 0003698820