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dc.contributor.authorAhn, Hyeyoungen_US
dc.contributor.authorHuang, Yu-Chiaoen_US
dc.contributor.authorLin, Chang-Weien_US
dc.contributor.authorChiu, Yi-Lunen_US
dc.contributor.authorLin, Erh-Chenen_US
dc.contributor.authorLai, Ying-Yuen_US
dc.contributor.authorLee, Yi-Hsienen_US
dc.date.accessioned2019-04-02T05:58:33Z-
dc.date.available2019-04-02T05:58:33Z-
dc.date.issued2018-08-29en_US
dc.identifier.issn1944-8244en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsami.8b09378en_US
dc.identifier.urihttp://hdl.handle.net/11536/148085-
dc.description.abstractTwo-dimensional (2D) transition metal dichalcogenides (TMDCs) have attracted great attention as alternatives to graphene with semiconducting band gaps. Mono- or few-layer TMDCs can be prepared by various methods, but regardless of the fabrication methods [such as mechanical exfoliation and chemical vapor deposition (CVD)], TMDCs contain many structural defects, which significantly affect their physical properties and limit their performance in applications. Metallophthalocyanines (MPcs) are organic semiconductors, and as dopants, they are capable of modulating the optical and electrical properties of other semiconducting materials. Here, we report that besides the ability to modulate the optoelectronic properties of 2D TMDCs, MPc molecules can be used to heal defects and improve the physicochemical properties of TMDCs. Doping of planar MPc molecules to TMDCs is achieved by a simple solution dip-coating method and results in a significant improvement in the optical properties and thermal responses of CVD-grown TMDCs, even comparable to those of mechanically exfoliated counterparts. Study of carrier dynamics shows that the adsorption of MPc on the TMDC surface leads to the complete suppression of the mid-gap defect-induced absorption in TMDCs. Furthermore, MPc molecules with a large lateral size are found to effectively reduce the point defects in mechanically exfoliated TMDCs introduced during the preparation process. Our results not only clarify the optoelectronic modulation mechanism of chemical doping but also offer a simple method to control the nanosized defects in 2D TMDCs.en_US
dc.language.isoen_USen_US
dc.subjecttwo-dimensional materialsen_US
dc.subjecttransition metal dichalcogenidesen_US
dc.subjectmolybdenum diselenideen_US
dc.subjectphthalocyanineen_US
dc.subjectdefectsen_US
dc.titleEfficient Defect Healing of Transition Metal Dichalcogenides by Metallophthalocyanineen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acsami.8b09378en_US
dc.identifier.journalACS APPLIED MATERIALS & INTERFACESen_US
dc.citation.volume10en_US
dc.citation.spage29145en_US
dc.citation.epage29152en_US
dc.contributor.department光電工程學系zh_TW
dc.contributor.departmentDepartment of Photonicsen_US
dc.identifier.wosnumberWOS:000443654600097en_US
dc.citation.woscount0en_US
Appears in Collections:Articles