Polymer electrolyte liquid crystal mixtures as phase-dependent thermoelectric materials

Suhana Mohd Said, Shahrir Razey Sahamir, Mohd Faizul Mohd Sabri, Muhammad Akmal Kamarudin, Kei Hayashi, Ahmad Zulazlan Shah Zulkifli, Takaki Nakajo, Masataka Kubouchi, Yuzuru Miyazaki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Organic thermoelectric materials have gained a trajectory in recent years given its advantages of processability, low cost and flexibility. In this paper, polymer electrolyte liquid crystal (PELC) mixtures composed of polyvinyl alcohol, potassium iodide, and 4-Cyano-4'-pentylbiphenyl (5CB) liquid crystal are fabricated, the 5CB acts as a ‘temperature switch’, i.e., a strong correlation between the thermoelectric properties and the transition from Ne-Iso transition of the 5CB, is observed. The electrical conductivity and Seebeck coefficient of the PELC mixtures both decrease above the Ne-Iso transition temperature. This thermoelectric behavior is discussed in terms of the carrier concentration, carrier mobility, and order-disorder transition.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalMolecular crystals and liquid crystals
Volume642
Issue number1
DOIs
Publication statusPublished - 2017 Jan 2

Keywords

  • Liquid crystal
  • Order-disorder transition
  • Organic thermoelectric
  • Polymer electrolyte

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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