Electronic and Optical Properties Characterization of MoS 2 Two-Dimensional Exfoliated nanomaterials
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Electronic and Optical Properties Characterization of MoS2 Two-Dimensional Exfoliated nanomaterials Dalal Fadil, Ridwan H. Fayaz and Anupama B. Kaul MRS Advances / FirstView Article / August 2016, pp 1 - 6 DOI: 10.1557/adv.2016.523, Published online: 21 July 2016
Link to this article: http://journals.cambridge.org/abstract_S2059852116005235 How to cite this article: Dalal Fadil, Ridwan H. Fayaz and Anupama B. Kaul Electronic and Optical Properties Characterization of MoS2 TwoDimensional Exfoliated nanomaterials. MRS Advances, Available on CJO 2016 doi:10.1557/adv.2016.523 Request Permissions : Click here
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MRS Advances © 2016 Materials Research Society DOI: 10.1557/adv.2016.523
Electronic and Optical Properties Characterization of MoS2 Two-Dimensional Exfoliated nanomaterials Dalal Fadil1, Ridwan H. Fayaz1 and Anupama B. Kaul1,2* 1 Department of Electrical and Computer Engineering, 2 Department of Metallurgical, Materials, and Biomedical Engineering University of Texas, El Paso, TX 79969 USA *Email: [email protected]
ABSTRACT For optoelectronic application, two-dimensional materials such as molybdenum disulfide (MoS2) are very promising candidate with their interesting electronic and optical properties. The layered structure of these materials makes them amenable to mechanical exfoliation to form scalable 2D atomic crystals. For width range of applications, liquid phase exfoliation using sonication and centrifugation in appropriate solvent is needed. This simple and scalable technique gives high quality of exfoliation of 2D materials without chemical reactions. In this paper, we report an example of the optical and electronic characterizations on MoS2 synthesized by liquid exfoliation in specific solvent.
INTRODUCTION Two dimensional (2D) nanomaterials such as graphene and transition-metal dichalcogenides (TMDs) have attracted tremendous attention over recent years due to their unique properties and far-reaching applications [1,2]. The unique properties of these materials can be utilized to improve the performance of a number of nanodevices, in particular optoelectronic devices. The optical properties of some 2D layered materials, such as graphene, MoS2 and WS2, can be competitive or complimentary to the properties of III-V conventional semiconducting materials. Unlike conventional semiconductors such as MoS2, which encompass a transition metal sandwiched between two hexagonal planes of chalcogen atoms, offer interesting prospects for enabling direct band gap optical absorption. The band gap can also be tuned depending on the number of layers in the stack. Excitonic effects [3,4,5] in these materials are also equally intriguing. In this work, we will present some measurements on the electronic and optical properties of 2D-MoS2 liquid exfoliation in Iso-propanol Alcohol (IPA) and IPA mixed with Ethyl Ce
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