Journal of Materials Science

, Volume 48, Issue 7, pp 2797–2805 | Cite as

Electric-field thermopower modulation in SrTiO3-based field-effect transistors

Energy Materials & Thermoelectrics

Abstract

Electric-field thermopower modulation method is demonstrated in detail using SrTiO3-based field-effect transistor structure as an example. Using water-infiltrated nanoporous 12CaO·7Al2O3 glass “CAN” as the gate insulator, carrier electrons up to ~1015 cm−2 can accumulate within an extremely narrow 2D electron gas (~2 nm), leading to an unusually large enhancement of thermopower. Our electric field-effect approach should be applicable to fully verify the performance of thermoelectric materials with complicated crystal structures. This approach may accelerate the development of nanostructures of high performance thermoelectric materials.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.Graduate School of EngineeringNagoya UniversityNagoyaJapan
  2. 2.PRESTO, Japan Science and Technology AgencyTokyoJapan

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