N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The presence of interface dipoles in self-assembled monolayers (SAMs) gives rise to electric-field effects at the device interfaces. SAMs of spiropyran derivatives can be used as photoactive interface dipole layer in field-effect transistors be...
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th-cmuir.6653943832-401142017-09-28T04:05:18Z N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping Suda M. Takashina N. Namuangruk S. Kungwan N. Sakurai H. Yamamoto H. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The presence of interface dipoles in self-assembled monolayers (SAMs) gives rise to electric-field effects at the device interfaces. SAMs of spiropyran derivatives can be used as photoactive interface dipole layer in field-effect transistors because the photochromism of spiropyrans involves a large dipole moment switching. Recently, light-induced p-type superconductivity in an organic Mott insulator, κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Br (κ-Br: BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene) has been realized, thanks to the hole carriers induced by significant interface dipole variation in the spiropyran-SAM. This report explores the converse situation by designing a new type of spiropyran monolayer in which light-induced electron-doping into κ-Br and accompanying n-type superconducting transition have been observed. These results open new possibilities for novel electronics utilizing a photoactive SAMs, which can design not only the magnitude but also the direction of photoinduced electric-fields at the device interfaces. 2017-09-28T04:05:18Z 2017-09-28T04:05:18Z 33 Journal 09359648 2-s2.0-85021434465 10.1002/adma.201606833 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85021434465&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/40114 |
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© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The presence of interface dipoles in self-assembled monolayers (SAMs) gives rise to electric-field effects at the device interfaces. SAMs of spiropyran derivatives can be used as photoactive interface dipole layer in field-effect transistors because the photochromism of spiropyrans involves a large dipole moment switching. Recently, light-induced p-type superconductivity in an organic Mott insulator, κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Br (κ-Br: BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene) has been realized, thanks to the hole carriers induced by significant interface dipole variation in the spiropyran-SAM. This report explores the converse situation by designing a new type of spiropyran monolayer in which light-induced electron-doping into κ-Br and accompanying n-type superconducting transition have been observed. These results open new possibilities for novel electronics utilizing a photoactive SAMs, which can design not only the magnitude but also the direction of photoinduced electric-fields at the device interfaces. |
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author |
Suda M. Takashina N. Namuangruk S. Kungwan N. Sakurai H. Yamamoto H. |
spellingShingle |
Suda M. Takashina N. Namuangruk S. Kungwan N. Sakurai H. Yamamoto H. N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping |
author_facet |
Suda M. Takashina N. Namuangruk S. Kungwan N. Sakurai H. Yamamoto H. |
author_sort |
Suda M. |
title |
N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping |
title_short |
N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping |
title_full |
N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping |
title_fullStr |
N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping |
title_full_unstemmed |
N-Type Superconductivity in an Organic Mott Insulator Induced by Light-Driven Electron-Doping |
title_sort |
n-type superconductivity in an organic mott insulator induced by light-driven electron-doping |
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2017 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85021434465&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/40114 |
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