Polar liquid molecule induced transport property modulation at LaAlO3/SrTiO3heterointerface

K. Au, D. F. Li, N. Y. Chan, Jiyan Dai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)


Application of LaAlO3/SrTiO3interfacial two-dimensional electron gas (2DEG) as a polar molecule sensor is demonstrated. The sensing mechanism is due to the formation of a metal-semiconductor Schottky junction when the center of LaAlO3surface is covered with polar molecules such as water. These results also evidence the existence of a polarization field inside the LaAlO3layer. KGaA, Weinheim.
Original languageEnglish
Pages (from-to)2598-2602
Number of pages5
JournalAdvanced Materials
Issue number19
Publication statusPublished - 15 May 2012


  • interface
  • LaAlO /SrTiO 3 3
  • polar molecule sensor
  • two-dimensional electron gas

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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