In situ real-time spectroscopic ellipsometry measurement for the investigation of molecular orientation in organic amorphous multilayer structures

Daisuke Yokoyama, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

To investigate molecular orientation in organic amorphous films, in situ real-time spectroscopic ellipsometry measurements were performed during vacuum deposition. Three materials with different molecular shapes were adopted to confirm the generality of the molecular orientation. In all three cases, more than 200 000 values for the ellipsometric parameters measured during deposition were well simulated simultaneously over the entire spectral range and measurement period using a simple model where the films possessed homogeneous optical anisotropy. This demonstrated the homogeneity of the molecular orientation in the direction of film thickness. The molecular orientation can be controlled by the substrate temperature even in multilayer structures. It is also demonstrated that a "multilayer structure" can be fabricated using only one material, where each layer has different optical and electrical properties.

Original languageEnglish
Article number123512
JournalJournal of Applied Physics
Volume107
Issue number12
DOIs
Publication statusPublished - Jun 15 2010

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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