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Photoswitchable opt...
Photoswitchable optoelectronic properties of 2D MoSe 2 /diarylethene hybrid structures
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Park, Sewon (author)
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Ji, Jaehoon (author)
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Cunningham, Connor (author)
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Pillai, Srajan (author)
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- Rouillon, Jean, 1993 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Benitez-Martin, Carlos, 1994 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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Fang, Mengqi (author)
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Yang, Eui Hyeok (author)
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- Andreasson, Joakim, 1973 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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You, Jeong Ho (author)
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Choi, Jong Hyun (author)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Scientific Reports. - 2045-2322 .- 2045-2322. ; 14:1
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https://doi.org/10.1...
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Abstract
Subject headings
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- The ability to modulate optical and electrical properties of two-dimensional (2D) semiconductors has sparked considerable interest in transition metal dichalcogenides (TMDs). Herein, we introduce a facile strategy for modulating optoelectronic properties of monolayer MoSe2 with external light. Photochromic diarylethene (DAE) molecules formed a 2-nm-thick uniform layer on MoSe2, switching between its closed- and open-form isomers under UV and visible irradiation, respectively. We have discovered that the closed DAE conformation under UV has its lowest unoccupied molecular orbital energy level lower than the conduction band minimum of MoSe2, which facilitates photoinduced charge separation at the hybrid interface and quenches photoluminescence (PL) from monolayer flakes. In contrast, open isomers under visible light prevent photoexcited electron transfer from MoSe2 to DAE, thus retaining PL emission properties. Alternating UV and visible light repeatedly show a dynamic modulation of optoelectronic signatures of MoSe2. Conductive atomic force microscopy and Kelvin probe force microscopy also reveal an increase in conductivity and work function of MoSe2/DAE with photoswitched closed-form DAE. These results may open new opportunities for designing new phototransistors and other 2D optoelectronic devices.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Diarylethene
- Transition metal dichalcogenide
- Optoelectronics
- Photoswitch
- MoSe 2
- Photochromic molecules
- Transition metal dichalcogenide
- MoSe2
- Optoelectronics
- Photoswitch
- Photochromic molecules
- Diarylethene
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Park, Sewon
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Ji, Jaehoon
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Cunningham, Conn ...
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Pillai, Srajan
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Rouillon, Jean, ...
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Benitez-Martin, ...
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show more...
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Fang, Mengqi
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Yang, Eui Hyeok
-
Andreasson, Joak ...
-
You, Jeong Ho
-
Choi, Jong Hyun
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Scientific Repor ...
- By the university
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Chalmers University of Technology
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University of Gothenburg