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Journal article
Asymmetric Dressing of WSe2 with (Macro)molecular Switches: Fabrication of Quaternary-Responsive Transistors
ACS nano, v 15(6), pp 10668-10677
22 Jun 2021
PMID: 34096713
Abstract
The forthcoming saturation of Moore's law has led to a strong demand for integrating analogue functionalities within semiconductor-based devices. As a step toward this goal, we fabricate quaternary-responsive WSe2-based field-effect transistors (FETs) whose output current can be remotely and reversibly controlled by light, heat, and electric field. A photochromic silane-terminated spiropyran (SP) is chemisorbed on SiO2 forming a self-assembled monolayer (SAM) that can switch from the SP to the merocyanine (MC) form in response to UV illumination and switch back by either heat or visible illumination. Such a SAM is incorporated at the dielectric-semiconductor interface in WSe2-based FETs. Upon UV irradiation, a drastic decrease in the output current of 82% is observed and ascribed to the zwitterionic MC isomer acting as charge scattering site. To provide an additional functionality, the WSe2 top surface is coated with a ferroelectric co-polymer layer based on poly(vinylidene fluoride-co-trifluoroethylene). Because of its switchable inherent electrical polarization, it can promote either the accumulation or depletion of charge carriers in the WSe2 channel, thereby inducing a current modulation with 99% efficiency. Thanks to the efficient tuning induced by the two components and their synergistic effects, the device polarity could be modulated from n-type to p-type. Such a control over the carrier concentration and device polarity is key to develop 2D advanced electronics. Moreover, the integration strategy of multiple stimuli-responsive elements into a single FET allows us to greatly enrich its functionality, thereby promoting the development for More-than-Moore technology.
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Details
- Title
- Asymmetric Dressing of WSe2 with (Macro)molecular Switches: Fabrication of Quaternary-Responsive Transistors
- Creators
- Haixin Qiu - Institut de Science et d'Ingénierie SupramoléculairesStefano Ippolito - Institut de Science et d'Ingénierie SupramoléculairesAgostino Galanti - Institut de Science et d'Ingénierie SupramoléculairesZhaoyang Liu - Institut de Science et d'Ingénierie SupramoléculairesPaolo Samori - Univ Strasbourg, ISIS, CNRS, F-67000 Strasbourg, France
- Publication Details
- ACS nano, v 15(6), pp 10668-10677
- Publisher
- Amer Chemical Soc
- Number of pages
- 10
- Grant note
- GA-833707 / European Commission through the ERC ANR-10-LABX-0026 CSC; ANR-11-LABX0058 NIE; ANR10-120 IDEX-0002-02 / Agence Nationale de la Recherche; Agence Nationale de la Recherche (ANR) Institut Universitaire de France (IUF) Chinese Scholarship Council; China Scholarship Council GA-881603 / Graphene Flagship Core 3 project International Center for Frontier Research in Chemistry (icFRC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000665748900131
- Scopus ID
- 2-s2.0-85108563532
- Other Identifier
- 991021931898804721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology