Isolation and characterization of few-layer black phosphorus
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
Institute of Physics Publishing (IOP)Date
2014-09-01Citation
10.1088/2053-1583/1/2/025001
2D Matererials 1.2 (2014): 025001
ISSN
2053-1583DOI
10.1088/2053-1583/1/2/025001Funded by
A.C-G. acknowledges financial support through the FP7-Marie Curie Project PIEF-GA-2011-300802 (‘STRENGTHNANO’). This work was supported by the Dutch organization for Fundamental Research on Matter (FOM), the Spanish Ministry of Economy and Innovation through Grants Nos. FIS2010-21883-C02-2, FIS2012-37549-C05-03 and CONSOLIDER CSD2007-0010, the Generalitat Valenciana under Grant PROMETEO/2012/011, and the Ramón y Cajal Program (E.P). KLMA acknowledges support from the CCC of the Universidad Autónoma de MadridProject
info:eu-repo/grantAgreement/EC/FP7/300802; Gobierno de España. FIS2010-21883-C02-2; Gobierno de España. FIS2012-37549-C05-03; Gobierno de España. CSD2007-0010Editor's Version
http://dx.doi.org/10.1088/2053-1583/1/2/025001Subjects
Black phosphorus; Raman spectroscopy; Mechanical exfoliation; Transmission electron microscopy; Density functional theory; Band structure; Exciton; Field-effect transistor; FísicaNote
This is the post-peer reviewed version of the following article: A. Castellanos-Gomez et al. “Isolation and characterization of few-layer black phosphorus”. 2D Matererials, 2014, 1(2) 025001 doi:10.1088/2053-1583/1/2/025001 Which has been published in final form at: http://iopscience.iop.org/2053-1583/1/2/025001Rights
© 2014 IopScienceAbstract
Isolation and characterization of mechanically exfoliated black phosphorus flakes with a thickness down to two single-layers is presented. A modification of the mechanical exfoliation method, which provides higher yield of atomically thin flakes than conventional mechanical exfoliation, has been developed. We present general guidelines to determine the number of layers using optical microscopy, Raman spectroscopy and transmission electron microscopy in a fast and reliable way. Moreover, we demonstrate that the exfoliated flakes are highly crystalline and that they are stable even in free-standing form through Raman spectroscopy and transmission electron microscopy measurements. A strong thickness dependence of the band structure is found by density functional theory calculations. The exciton binding energy, within an effective mass approximation, is also calculated for different number of layers. Our computational results for the optical gap are consistent with preliminary photoluminescence results on thin flakes. Finally, we study the environmental stability of black phosphorus flakes finding that the flakes are very hydrophilic and that long term exposure to air moisture etches black phosphorus away. Nonetheless, we demonstrate that the aging of the flakes is slow enough to allow fabrication of field-effect transistors with strong ambipolar behavior. Density functional theory calculations also give us insight into the water-induced changes of the structural and electronic properties of black phosphorus
Files in this item
Google Scholar:Castellanos-Gomez, Andres
-
Vicarelli, Leonardo
-
Prada, Elsa
-
Island, Joshua O.
-
Narasimha-Acharya, K. L.
-
Blanter, Sofya I.
-
Groenendijk, Dirk J.
-
Buscema, Michele
-
Steele, Gary A.
-
Alvarez, J. V.
-
Zandbergen, Henny W.
-
Palacios Burgos, Juan José
-
Van Der Zant, Herre S J
This item appears in the following Collection(s)
Related items
Showing items related by title, author, creator and subject.
-
Franckeite as a naturally occurring van der Waals heterostructure
Molina-Mendoza, Aday J.; Giovanelli, Emerson; Paz, Wendel S.; Niño, Miguel Ángel; Island, Joshua O.; Evangeli, Charalambos; Aballe, Lucía; Foerster, Michael; Rubio Bollinger, Gabino; Agrait de la Puente, Mario Nicolás; Palacios Burgos, Juan José; Pérez, Emilio M.; Castellanos-Gómez, Andres; Van der Zant, Herre S.J.
2017-02-13 -
Enhanced superconductivity in atomically thin TaS2
Navarro-Moratalla, Efrén; Island, Joshua; Mañas-Valero, Samuel; Pinilla-Cienfuegos, Elena; Castellanos-Gómez, Andrés; Quereda, Jorge; Rubio Bollinger, Gabino; Chirolli, Luca; Silva-Guillén, José Angel; Agrait de la Puente, Mario Nicolás; Steele, Gary A.; Guinea, Francisco; Van der Zant, Herre S. J.; Coronado, Eugenio
2016-03-17