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Modulating Photoluminescence of Monolayer Molybdenum Disulfide by Metal-Insulator Phase Transition in Active Substrates.
Hou, Jiwei; Wang, Xi; Fu, Deyi; Ko, Changhyun; Chen, Yabin; Sun, Yufei; Lee, Sangwook; Wang, Kevin X; Dong, Kaichen; Sun, Yinghui; Tongay, Sefaattin; Jiao, Liying; Yao, Jie; Liu, Kai; Wu, Junqiao.
Afiliação
  • Hou J; State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China.
  • Wang X; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Fu D; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Ko C; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Chen Y; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Sun Y; State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China.
  • Lee S; School of Materials Science and Engineering, Kyungpook National University, Daegu, 41566, Korea.
  • Wang KX; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Dong K; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Sun Y; Department of Precision Instrument, Tsinghua University, Beijing, 100084, P. R. China.
  • Tongay S; Department of Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, P. R. China.
  • Jiao L; School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287, USA.
  • Yao J; Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
  • Liu K; Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
  • Wu J; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
Small ; 12(29): 3976-84, 2016 Aug.
Article em En | MEDLINE | ID: mdl-27335137
ABSTRACT
The atomic thickness and flatness allow properties of 2D semiconductors to be modulated with influence from the substrate. Reversible modulation of these properties requires an "active," reconfigurable substrate, i.e., a substrate with switchable functionalities that interacts strongly with the 2D overlayer. In this work, the photoluminescence (PL) of monolayer molybdenum disulfide (MoS2 ) is modulated by interfacing it with a phase transition material, vanadium dioxide (VO2 ). The MoS2 PL intensity is enhanced by a factor of up to three when the underlying VO2 undergoes the thermally driven phase transition from the insulating to metallic phase. A nonvolatile, reversible way to rewrite the PL pattern is also demonstrated. The enhancement effect is attributed to constructive optical interference when the VO2 turns metallic. This modulation method requires no chemical or mechanical processes, potentially finding applications in new switches and sensors.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article