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Correlated fluorescence blinking in two-dimensional semiconductor heterostructures

Correlated fluorescence blinking in two-dimensional semiconductor heterostructures


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XU, Weigao, Weiwei LIU, Jan F. SCHMIDT, Weijie ZHAO, Xin LU, Timo RAAB, Carole DIEDERICHS, Weibo GAO, Denis V. SELETSKIY, Qihua XIONG, 2016. Correlated fluorescence blinking in two-dimensional semiconductor heterostructures. In: Nature. 541(7635), pp. 62-67. ISSN 0028-0836. eISSN 1476-4687

@article{Xu2016Corre-38709, title={Correlated fluorescence blinking in two-dimensional semiconductor heterostructures}, year={2016}, doi={10.1038/nature20601}, number={7635}, volume={541}, issn={0028-0836}, journal={Nature}, pages={62--67}, author={Xu, Weigao and Liu, Weiwei and Schmidt, Jan F. and Zhao, Weijie and Lu, Xin and Raab, Timo and Diederichs, Carole and Gao, Weibo and Seletskiy, Denis V. and Xiong, Qihua} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/38709"> <dc:contributor>Xu, Weigao</dc:contributor> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/38709"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-05-04T07:21:26Z</dcterms:available> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-05-04T07:21:26Z</dc:date> <dc:creator>Raab, Timo</dc:creator> <dc:contributor>Liu, Weiwei</dc:contributor> <dcterms:abstract xml:lang="eng">'Blinking', or 'fluorescence intermittency', refers to a random switching between 'ON' (bright) and 'OFF' (dark) states of an emitter; it has been studied widely in zero-dimensional quantum dots and molecules, and scarcely in one-dimensional systems. A generally accepted mechanism for blinking in quantum dots involves random switching between neutral and charged states (or is accompanied by fluctuations in charge-carrier traps), which substantially alters the dynamics of radiative and non-radiative decay. Here, we uncover a new type of blinking effect in vertically stacked, two-dimensional semiconductor heterostructures, which consist of two distinct monolayers of transition metal dichalcogenides (TMDs) that are weakly coupled by van der Waals forces. Unlike zero-dimensional or one-dimensional systems, two-dimensional TMD heterostructures show a correlated blinking effect, comprising randomly switching bright, neutral and dark states. Fluorescence cross-correlation spectroscopy analyses show that a bright state occurring in one monolayer will simultaneously lead to a dark state in the other monolayer, owing to an intermittent interlayer carrier-transfer process. Our findings suggest that bilayer van der Waals heterostructures provide unique platforms for the study of charge-transfer dynamics and non-equilibrium-state physics, and could see application as correlated light emitters in quantum technology.</dcterms:abstract> <dc:creator>Schmidt, Jan F.</dc:creator> <dc:creator>Seletskiy, Denis V.</dc:creator> <dc:contributor>Xiong, Qihua</dc:contributor> <dcterms:issued>2016</dcterms:issued> <dc:creator>Xiong, Qihua</dc:creator> <dc:contributor>Raab, Timo</dc:contributor> <dc:contributor>Schmidt, Jan F.</dc:contributor> <dc:contributor>Lu, Xin</dc:contributor> <dc:creator>Gao, Weibo</dc:creator> <dc:contributor>Diederichs, Carole</dc:contributor> <dcterms:title>Correlated fluorescence blinking in two-dimensional semiconductor heterostructures</dcterms:title> <dc:contributor>Gao, Weibo</dc:contributor> <dc:contributor>Seletskiy, Denis V.</dc:contributor> <dc:language>eng</dc:language> <dc:contributor>Zhao, Weijie</dc:contributor> <dc:creator>Diederichs, Carole</dc:creator> <dc:creator>Xu, Weigao</dc:creator> <dc:creator>Zhao, Weijie</dc:creator> <dc:creator>Liu, Weiwei</dc:creator> <dc:creator>Lu, Xin</dc:creator> </rdf:Description> </rdf:RDF>

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