A novel method to orient semiconducting polymer films

Tomas G Bäcklund, Henrik Sandberg, Ronald Österbacka (Corresponding Author), Henrik Stubb, Mika Torkkeli, Ritva Serimaa

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

We present a new technique for orienting polymer semiconductor thin films. In our technique, polymer chains are rigorously oriented without using any mechanical tools and with minimal risk of film contamination. The technique is based on the mechanical force resulting from the in‐plane shrinkage exerted by a shrinker (top layer) that is used to orient the semiconductor beneath an intermediate layer; the latter acting as a force mediator. The chain orientation is demonstrated by several techniques such as crossed‐polarizer microscopy, atomic force microscopy, grazing‐incidence X‐ray diffraction, and polarized absorption. The orientation geometry is controlled by the shrinking process and the shrinker area. The semiconductivity of the film only stems from the transistor device structures under study, and the method can therefore be generalized.
Original languageEnglish
Pages (from-to)1095-1099
Number of pages5
JournalAdvanced Functional Materials
Volume15
Issue number7
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Keywords

  • alignment
  • polymers
  • semiconductor

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    Bäcklund, T. G., Sandberg, H., Österbacka, R., Stubb, H., Torkkeli, M., & Serimaa, R. (2005). A novel method to orient semiconducting polymer films. Advanced Functional Materials, 15(7), 1095-1099. https://doi.org/10.1002/adfm.200400448