Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation

Hiroki Kinoshita, Il Jeon, Mina Maruyama, Kenji Kawahara, Yuri Terao, Dong Ding, Rika Matsumoto, Yutaka Matsuo, Susumu Okada, Hiroki Ago

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Bilayer graphene (BLG) comprises a 2D nanospace sandwiched by two parallel graphene sheets that can be used to intercalate molecules or ions for attaining novel functionalities. However, intercalation is mostly demonstrated with small, exfoliated graphene flakes. This study demonstrates intercalation of molybdenum chloride (MoCl5) into a large-area, uniform BLG sheet, which is grown by chemical vapor deposition (CVD). This study reveals that the degree of MoCl5 intercalation strongly depends on the stacking order of the graphene; twist-stacked graphene shows a much higher degree of intercalation than AB-stacked. Density functional theory calculations suggest that weak interlayer coupling in the twist-stacked graphene contributes to the effective intercalation. By selectively synthesizing twist-rich BLG films through control of the CVD conditions, low sheet resistance (83 Ω ▫−1) is realized after MoCl5 intercalation, while maintaining high optical transmittance (≈95%). The low sheet resistance state is relatively stable in air for more than three months. Furthermore, the intercalated BLG film is applied to organic solar cells, realizing a high power conversion efficiency.

Original languageEnglish
Article number1702141
JournalAdvanced Materials
Volume29
Issue number41
DOIs
Publication statusPublished - Nov 6 2017

Fingerprint

Graphite
Intercalation
Graphene
Sheet resistance
Chemical vapor deposition
molybdenum chloride
Opacity
Molybdenum
Conversion efficiency
Density functional theory
Ions
Molecules

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation. / Kinoshita, Hiroki; Jeon, Il; Maruyama, Mina; Kawahara, Kenji; Terao, Yuri; Ding, Dong; Matsumoto, Rika; Matsuo, Yutaka; Okada, Susumu; Ago, Hiroki.

In: Advanced Materials, Vol. 29, No. 41, 1702141, 06.11.2017.

Research output: Contribution to journalArticle

Kinoshita, H, Jeon, I, Maruyama, M, Kawahara, K, Terao, Y, Ding, D, Matsumoto, R, Matsuo, Y, Okada, S & Ago, H 2017, 'Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation', Advanced Materials, vol. 29, no. 41, 1702141. https://doi.org/10.1002/adma.201702141
Kinoshita H, Jeon I, Maruyama M, Kawahara K, Terao Y, Ding D et al. Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation. Advanced Materials. 2017 Nov 6;29(41). 1702141. https://doi.org/10.1002/adma.201702141
Kinoshita, Hiroki ; Jeon, Il ; Maruyama, Mina ; Kawahara, Kenji ; Terao, Yuri ; Ding, Dong ; Matsumoto, Rika ; Matsuo, Yutaka ; Okada, Susumu ; Ago, Hiroki. / Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation. In: Advanced Materials. 2017 ; Vol. 29, No. 41.
@article{82cfab7361f74264ac0d9c520ff0c2e5,
title = "Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation",
abstract = "Bilayer graphene (BLG) comprises a 2D nanospace sandwiched by two parallel graphene sheets that can be used to intercalate molecules or ions for attaining novel functionalities. However, intercalation is mostly demonstrated with small, exfoliated graphene flakes. This study demonstrates intercalation of molybdenum chloride (MoCl5) into a large-area, uniform BLG sheet, which is grown by chemical vapor deposition (CVD). This study reveals that the degree of MoCl5 intercalation strongly depends on the stacking order of the graphene; twist-stacked graphene shows a much higher degree of intercalation than AB-stacked. Density functional theory calculations suggest that weak interlayer coupling in the twist-stacked graphene contributes to the effective intercalation. By selectively synthesizing twist-rich BLG films through control of the CVD conditions, low sheet resistance (83 Ω ▫−1) is realized after MoCl5 intercalation, while maintaining high optical transmittance (≈95{\%}). The low sheet resistance state is relatively stable in air for more than three months. Furthermore, the intercalated BLG film is applied to organic solar cells, realizing a high power conversion efficiency.",
author = "Hiroki Kinoshita and Il Jeon and Mina Maruyama and Kenji Kawahara and Yuri Terao and Dong Ding and Rika Matsumoto and Yutaka Matsuo and Susumu Okada and Hiroki Ago",
year = "2017",
month = "11",
day = "6",
doi = "10.1002/adma.201702141",
language = "English",
volume = "29",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-VCH Verlag",
number = "41",

}

TY - JOUR

T1 - Highly Conductive and Transparent Large-Area Bilayer Graphene Realized by MoCl5 Intercalation

AU - Kinoshita, Hiroki

AU - Jeon, Il

AU - Maruyama, Mina

AU - Kawahara, Kenji

AU - Terao, Yuri

AU - Ding, Dong

AU - Matsumoto, Rika

AU - Matsuo, Yutaka

AU - Okada, Susumu

AU - Ago, Hiroki

PY - 2017/11/6

Y1 - 2017/11/6

N2 - Bilayer graphene (BLG) comprises a 2D nanospace sandwiched by two parallel graphene sheets that can be used to intercalate molecules or ions for attaining novel functionalities. However, intercalation is mostly demonstrated with small, exfoliated graphene flakes. This study demonstrates intercalation of molybdenum chloride (MoCl5) into a large-area, uniform BLG sheet, which is grown by chemical vapor deposition (CVD). This study reveals that the degree of MoCl5 intercalation strongly depends on the stacking order of the graphene; twist-stacked graphene shows a much higher degree of intercalation than AB-stacked. Density functional theory calculations suggest that weak interlayer coupling in the twist-stacked graphene contributes to the effective intercalation. By selectively synthesizing twist-rich BLG films through control of the CVD conditions, low sheet resistance (83 Ω ▫−1) is realized after MoCl5 intercalation, while maintaining high optical transmittance (≈95%). The low sheet resistance state is relatively stable in air for more than three months. Furthermore, the intercalated BLG film is applied to organic solar cells, realizing a high power conversion efficiency.

AB - Bilayer graphene (BLG) comprises a 2D nanospace sandwiched by two parallel graphene sheets that can be used to intercalate molecules or ions for attaining novel functionalities. However, intercalation is mostly demonstrated with small, exfoliated graphene flakes. This study demonstrates intercalation of molybdenum chloride (MoCl5) into a large-area, uniform BLG sheet, which is grown by chemical vapor deposition (CVD). This study reveals that the degree of MoCl5 intercalation strongly depends on the stacking order of the graphene; twist-stacked graphene shows a much higher degree of intercalation than AB-stacked. Density functional theory calculations suggest that weak interlayer coupling in the twist-stacked graphene contributes to the effective intercalation. By selectively synthesizing twist-rich BLG films through control of the CVD conditions, low sheet resistance (83 Ω ▫−1) is realized after MoCl5 intercalation, while maintaining high optical transmittance (≈95%). The low sheet resistance state is relatively stable in air for more than three months. Furthermore, the intercalated BLG film is applied to organic solar cells, realizing a high power conversion efficiency.

UR - http://www.scopus.com/inward/record.url?scp=85032734171&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85032734171&partnerID=8YFLogxK

U2 - 10.1002/adma.201702141

DO - 10.1002/adma.201702141

M3 - Article

VL - 29

JO - Advanced Materials

JF - Advanced Materials

SN - 0935-9648

IS - 41

M1 - 1702141

ER -