000070227 001__ 70227
000070227 005__ 20190709135701.0
000070227 0247_ $$2doi$$a10.1021/acsnano.7b05520
000070227 0248_ $$2sideral$$a103550
000070227 037__ $$aART-2017-103550
000070227 041__ $$aeng
000070227 100__ $$aDubey, S.
000070227 245__ $$aWeakly Trapped, Charged, and Free Excitons in Single-Layer MoS2 in the Presence of Defects, Strain, and Charged Impurities
000070227 260__ $$c2017
000070227 5060_ $$aAccess copy available to the general public$$fUnrestricted
000070227 5203_ $$aFew- and single-layer MoS2 host substantial densities of defects. They are thought to influence the doping level, the crystal structure, and the binding of electron-hole pairs. We disentangle the concomitant spectroscopic expression of all three effects and identify to what extent they are intrinsic to the material or extrinsic to it, i.e., related to its local environment. We do so by using different sources of MoS2 - a natural one and one prepared at high pressure and high temperature - and different substrates bringing varying amounts of charged impurities and by separating the contributions of internal strain and doping in Raman spectra. Photoluminescence unveils various optically active excitonic complexes. We discover a defect-bound state having a low binding energy of 20 meV that does not appear sensitive to strain and doping, unlike charged excitons. Conversely, the defect does not significantly dope or strain MoS2. Scanning tunneling microscopy and density functional theory simulations point to substitutional atoms, presumably individual nitrogen atoms at the sulfur site. Our work shows the way to a systematic understanding of the effect of external and internal fields on the optical properties of two-dimensional materials.
000070227 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2016-79776-P$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 696656-GrapheneCore1$$9info:eu-repo/grantAgreement/EC/H2020/696656/EU/Graphene-based disruptive technologies/GrapheneCore1$$9info:eu-repo/grantAgreement/EC/FP7/604391/EU/Graphene-Based Revolutions in ICT And Beyond/GRAPHENE$$9info:eu-repo/grantAgreement/ES/DGA/E26
000070227 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000070227 590__ $$a13.709$$b2017
000070227 591__ $$aCHEMISTRY, PHYSICAL$$b7 / 146 = 0.048$$c2017$$dQ1$$eT1
000070227 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b5 / 92 = 0.054$$c2017$$dQ1$$eT1
000070227 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b10 / 171 = 0.058$$c2017$$dQ1$$eT1
000070227 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b12 / 285 = 0.042$$c2017$$dQ1$$eT1
000070227 592__ $$a7.203$$b2017
000070227 593__ $$aEngineering (miscellaneous)$$c2017$$dQ1
000070227 593__ $$aPhysics and Astronomy (miscellaneous)$$c2017$$dQ1
000070227 593__ $$aNanoscience and Nanotechnology$$c2017$$dQ1
000070227 593__ $$aMaterials Science (miscellaneous)$$c2017$$dQ1
000070227 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/submittedVersion
000070227 700__ $$aLisi, S.
000070227 700__ $$aNayak, G.
000070227 700__ $$aHerziger, F.
000070227 700__ $$aNguyen, V.-D.
000070227 700__ $$aLe Quang, T.
000070227 700__ $$aCherkez, V.
000070227 700__ $$aGonzález, C.
000070227 700__ $$aDappe, Y.J.
000070227 700__ $$aWatanabe, K.
000070227 700__ $$aTaniguchi, T.
000070227 700__ $$aMagaud, L.
000070227 700__ $$aMallet, P.
000070227 700__ $$aVeuillen, J.-Y.
000070227 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, R.$$uUniversidad de Zaragoza
000070227 700__ $$aMarty, L.
000070227 700__ $$aRenard, J.
000070227 700__ $$aBendiab, N.
000070227 700__ $$aCoraux, J.
000070227 700__ $$aBouchiat, V.
000070227 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000070227 773__ $$g11, 11 (2017), 11206-11216$$pACS Nano$$tACS Nano$$x1936-0851
000070227 8564_ $$s1141239$$uhttps://zaguan.unizar.es/record/70227/files/texto_completo.pdf$$yPreprint
000070227 8564_ $$s98244$$uhttps://zaguan.unizar.es/record/70227/files/texto_completo.jpg?subformat=icon$$xicon$$yPreprint
000070227 909CO $$ooai:zaguan.unizar.es:70227$$particulos$$pdriver
000070227 951__ $$a2019-07-09-12:49:04
000070227 980__ $$aARTICLE