Substrate-Induced and Thin-Film Phases: Polymorphism of Organic Materials on Surfaces

Andrew Owen Fletcher Jones, Basab Chattopadhyay, Yves H. Geerts, Roland Resel

Research output: Contribution to journalArticleResearchpeer-review

Abstract

An increase or modification of structural order in the vicinity of a solid substrate is known for a wide range of materials. For molecular materials crystallizing on a solid surface it has been observed that new polymorphic forms may exist near the interface with the substrate, which have structures different to those observed in the bulk. Such phases are termed as substrate-induced phases (SIPs). The presence of an SIP in a compound or a class of materials can be of crucial significance in terms of their physical properties. However, the factors that drive such a process are not clearly understood or studied in depth. In this feature article, we review the current state of understanding concerning SIPs, giving examples of systems where SIPs have been observed, discussing their origins, and which questions remain to be answered. The role of the substrate in controlling the growth and subsequent structural order has been discussed in detail and the impact of polymorphism on organic electronic device properties has been addressed. Finally, the origin of SIPs has been correlated with their crystal structures and the differences with respect to the bulk structure are highlighted.

Original languageEnglish
Pages (from-to)2233-2255
JournalAdvanced functional materials
Volume26
Issue number14
DOIs
Publication statusPublished - 2016

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polymorphism
organic materials
Polymorphism
Thin films
Substrates
thin films
solid surfaces
Physical properties
physical properties
Crystal structure
crystal structure
electronics

Keywords

  • Organic electronics
  • Organic thin films
  • Pentacene
  • Polymorphism
  • Substrate-induced phase

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Substrate-Induced and Thin-Film Phases : Polymorphism of Organic Materials on Surfaces. / Jones, Andrew Owen Fletcher; Chattopadhyay, Basab; Geerts, Yves H.; Resel, Roland.

In: Advanced functional materials, Vol. 26, No. 14, 2016, p. 2233-2255.

Research output: Contribution to journalArticleResearchpeer-review

Jones, Andrew Owen Fletcher ; Chattopadhyay, Basab ; Geerts, Yves H. ; Resel, Roland. / Substrate-Induced and Thin-Film Phases : Polymorphism of Organic Materials on Surfaces. In: Advanced functional materials. 2016 ; Vol. 26, No. 14. pp. 2233-2255.
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