Nucleation and shape of 2D islands of DPh-DNTT thin-films prepared by vacuum evaporation

Yoshiaki Hattori, Yoshinari Kimura, Masatoshi Kitamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The growth mechanism of 2,9-diphenyl-dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DPh-DNTT) thin-films prepared by vacuum evaporation was investigated from a view point of the morphological crystallinity. In addition to atomic force microscopy, which is commonly used for imaging the morphology of surfaces, optical microscopy was positively used for the same purpose. The method allows quick and easy evaluation of the thin-film. In fact, an isolated, round, monolayer 2D island on the SiO2 substrate in initial stage and fractal-shape 2D islands on top surface of thin-film were observed. The nucleation density which depends on substrate temperature and surface treatment was investigated to clarified the growth mechanism.

Original languageEnglish
Title of host publication2019 Compound Semiconductor Week, CSW 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728100807
DOIs
Publication statusPublished - 2019 May
Externally publishedYes
Event2019 Compound Semiconductor Week, CSW 2019 - Nara, Japan
Duration: 2019 May 192019 May 23

Publication series

Name2019 Compound Semiconductor Week, CSW 2019 - Proceedings

Conference

Conference2019 Compound Semiconductor Week, CSW 2019
Country/TerritoryJapan
CityNara
Period19/5/1919/5/23

Keywords

  • 2D islands
  • DNTT
  • OTFT

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Atomic and Molecular Physics, and Optics

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