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Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition

Research output: Contribution to conference - Without ISBN/ISSN Speech

Published

Standard

Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition. / Black, Andrés; Roberts, Jonny; Acebron, Maria et al.
2017. European Graphene Forum 2017, Paris, France.

Research output: Contribution to conference - Without ISBN/ISSN Speech

Harvard

Black, A, Roberts, J, Acebron, M, Bernardo Gavito, R, Alsharif, G, J. Urbanos, F, Juarez, BH, Granados, D, Robinson, BJ, Vázquez De Parga, AL & Young, RJ 2017, 'Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition', European Graphene Forum 2017, Paris, France, 26/04/17 - 28/04/17.

APA

Black, A., Roberts, J., Acebron, M., Bernardo Gavito, R., Alsharif, G., J. Urbanos, F., Juarez, B. H., Granados, D., Robinson, B. J., Vázquez De Parga, A. L., & Young, R. J. (2017). Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition. European Graphene Forum 2017, Paris, France.

Vancouver

Black A, Roberts J, Acebron M, Bernardo Gavito R, Alsharif G, J. Urbanos F et al.. Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition. 2017. European Graphene Forum 2017, Paris, France.

Author

Black, Andrés ; Roberts, Jonny ; Acebron, Maria et al. / Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition. European Graphene Forum 2017, Paris, France.

Bibtex

@conference{38ca53734331448593fe820135899a40,
title = "Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition",
abstract = "The integration of various low dimensional materials into large area, scalable, heterostructures is highly desirable. For example, 0D semiconducting nanocrystals (NCs) exhibit attractive optical emission and absorption properties, while single layer 2D graphene is ideally suited to act as a transparent electrode due to its superior electrical and mechanical properties.The integration of silica encapsulated1, 0D semiconducting NCs with 2D graphene grown by chemical vapor deposition (CVD) is presented in this work. Large area NC films were deposited onto graphene using the Langmuir-Blodgett (LB) method, a technique which allows for the deposition of nanomaterials on a liquid surface. The surface properties of the silica coated NCs necessitated the use of a novel electrospray method (Figure 1a) to successfully spread the NCs2. Large area graphene/NC/graphene (Gr/NC/Gr) heterostructures, seen in Figure 1b, were assembled after film deposition. Topographic, mechanical and electrical properties were investigated using scanning probe techniques and scanning electron microscopy. Photoluminescence (PL) and Raman measurements provided complementary optical and spectroscopic information.The liquid employed in the LB trough was found to be critical for successful film transfer. By using dimethyl sulfoxide instead of water, continuous, homogenous films were obtained which maintained the optical properties of the NCs (Figure 1c). Raman measurements revealed a significant intensity enhancement of the top graphene sheets, along with additional characteristics attributed to the rippling and straining of the graphene on the NC film.",
keywords = "Nanocrystals, Graphene, quantum dots, Langmuir-Blodgett films, Heterostructures",
author = "Andr{\'e}s Black and Jonny Roberts and Maria Acebron and {Bernardo Gavito}, Ramon and Ghazi Alsharif and {J. Urbanos}, F. and Juarez, {Beatriz H.} and Daniel Granados and Robinson, {Benjamin James} and {V{\'a}zquez De Parga}, {Amadeo L.} and Young, {Robert James}",
year = "2017",
month = apr,
day = "26",
language = "English",
note = "European Graphene Forum 2017, EGF ; Conference date: 26-04-2017 Through 28-04-2017",
url = "http://www.setcor.org/conferences/EGF-2017",

}

RIS

TY - CONF

T1 - Large-Area 2D-0D Heterostructures via Langmuir-Blodgett Film Deposition

AU - Black, Andrés

AU - Roberts, Jonny

AU - Acebron, Maria

AU - Bernardo Gavito, Ramon

AU - Alsharif, Ghazi

AU - J. Urbanos, F.

AU - Juarez, Beatriz H.

AU - Granados, Daniel

AU - Robinson, Benjamin James

AU - Vázquez De Parga, Amadeo L.

AU - Young, Robert James

N1 - Conference code: 3

PY - 2017/4/26

Y1 - 2017/4/26

N2 - The integration of various low dimensional materials into large area, scalable, heterostructures is highly desirable. For example, 0D semiconducting nanocrystals (NCs) exhibit attractive optical emission and absorption properties, while single layer 2D graphene is ideally suited to act as a transparent electrode due to its superior electrical and mechanical properties.The integration of silica encapsulated1, 0D semiconducting NCs with 2D graphene grown by chemical vapor deposition (CVD) is presented in this work. Large area NC films were deposited onto graphene using the Langmuir-Blodgett (LB) method, a technique which allows for the deposition of nanomaterials on a liquid surface. The surface properties of the silica coated NCs necessitated the use of a novel electrospray method (Figure 1a) to successfully spread the NCs2. Large area graphene/NC/graphene (Gr/NC/Gr) heterostructures, seen in Figure 1b, were assembled after film deposition. Topographic, mechanical and electrical properties were investigated using scanning probe techniques and scanning electron microscopy. Photoluminescence (PL) and Raman measurements provided complementary optical and spectroscopic information.The liquid employed in the LB trough was found to be critical for successful film transfer. By using dimethyl sulfoxide instead of water, continuous, homogenous films were obtained which maintained the optical properties of the NCs (Figure 1c). Raman measurements revealed a significant intensity enhancement of the top graphene sheets, along with additional characteristics attributed to the rippling and straining of the graphene on the NC film.

AB - The integration of various low dimensional materials into large area, scalable, heterostructures is highly desirable. For example, 0D semiconducting nanocrystals (NCs) exhibit attractive optical emission and absorption properties, while single layer 2D graphene is ideally suited to act as a transparent electrode due to its superior electrical and mechanical properties.The integration of silica encapsulated1, 0D semiconducting NCs with 2D graphene grown by chemical vapor deposition (CVD) is presented in this work. Large area NC films were deposited onto graphene using the Langmuir-Blodgett (LB) method, a technique which allows for the deposition of nanomaterials on a liquid surface. The surface properties of the silica coated NCs necessitated the use of a novel electrospray method (Figure 1a) to successfully spread the NCs2. Large area graphene/NC/graphene (Gr/NC/Gr) heterostructures, seen in Figure 1b, were assembled after film deposition. Topographic, mechanical and electrical properties were investigated using scanning probe techniques and scanning electron microscopy. Photoluminescence (PL) and Raman measurements provided complementary optical and spectroscopic information.The liquid employed in the LB trough was found to be critical for successful film transfer. By using dimethyl sulfoxide instead of water, continuous, homogenous films were obtained which maintained the optical properties of the NCs (Figure 1c). Raman measurements revealed a significant intensity enhancement of the top graphene sheets, along with additional characteristics attributed to the rippling and straining of the graphene on the NC film.

KW - Nanocrystals

KW - Graphene

KW - quantum dots

KW - Langmuir-Blodgett films

KW - Heterostructures

M3 - Speech

T2 - European Graphene Forum 2017

Y2 - 26 April 2017 through 28 April 2017

ER -