Sulfur-doped graphene laminates for EMI shielding applications

Faisal Shahzad; Pradip Kumar; Seunggun Yu; Seunghwan Lee; Yoon Hyun Kim; Soon Man Hong; Chong Min Koo

doi:10.1039/c5tc02166a

Sulfur-doped graphene laminates for EMI shielding applications

Faisal Shahzad, Pradip Kumar, Seunggun Yu, Seunghwan Lee, Yoon Hyun Kim, Soon Man Hong, Chong Min Koo

Research output: Contribution to journal › Article › peer-review

108 Citations (Scopus)

Abstract

Herein, for the first time, we demonstrate that a laminated structure of sulfur-doped reduced graphene oxide (SrGO) provides significant potential for electromagnetic interference shielding applications. In this study, SrGO was prepared through the reaction between graphene oxide and hydrogen disulfide (H₂S) gas at elevated temperatures. The doping degree of S was controlled through varying the time and temperature of the reaction and the maximum doping content of 5.6 wt% was achieved. Because of the n-type doping contribution of the S atom to the doped graphene, SrGO laminate not only revealed a 47% larger electrical conductivity (75 S cm^-1) than undoped reduced graphene oxide laminate (51 S cm^-1) but also revealed 119% larger EMI shielding effectiveness (33.2 dB) than the undoped one (15.5 dB) at the same sample thickness.

Original language	English
Pages (from-to)	9802-9810
Number of pages	9
Journal	Journal of Materials Chemistry C
Volume	3
Issue number	38
DOIs	https://doi.org/10.1039/c5tc02166a
Publication status	Published - 2015 Aug 11
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

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10.1039/c5tc02166a

Cite this

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title = "Sulfur-doped graphene laminates for EMI shielding applications",

abstract = "Herein, for the first time, we demonstrate that a laminated structure of sulfur-doped reduced graphene oxide (SrGO) provides significant potential for electromagnetic interference shielding applications. In this study, SrGO was prepared through the reaction between graphene oxide and hydrogen disulfide (H2S) gas at elevated temperatures. The doping degree of S was controlled through varying the time and temperature of the reaction and the maximum doping content of 5.6 wt% was achieved. Because of the n-type doping contribution of the S atom to the doped graphene, SrGO laminate not only revealed a 47% larger electrical conductivity (75 S cm-1) than undoped reduced graphene oxide laminate (51 S cm-1) but also revealed 119% larger EMI shielding effectiveness (33.2 dB) than the undoped one (15.5 dB) at the same sample thickness.",

author = "Faisal Shahzad and Pradip Kumar and Seunggun Yu and Seunghwan Lee and Kim, {Yoon Hyun} and Hong, {Soon Man} and Koo, {Chong Min}",

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AU - Shahzad, Faisal

AU - Kumar, Pradip

AU - Yu, Seunggun

AU - Lee, Seunghwan

AU - Kim, Yoon Hyun

AU - Hong, Soon Man

AU - Koo, Chong Min

PY - 2015/8/11

Y1 - 2015/8/11

N2 - Herein, for the first time, we demonstrate that a laminated structure of sulfur-doped reduced graphene oxide (SrGO) provides significant potential for electromagnetic interference shielding applications. In this study, SrGO was prepared through the reaction between graphene oxide and hydrogen disulfide (H2S) gas at elevated temperatures. The doping degree of S was controlled through varying the time and temperature of the reaction and the maximum doping content of 5.6 wt% was achieved. Because of the n-type doping contribution of the S atom to the doped graphene, SrGO laminate not only revealed a 47% larger electrical conductivity (75 S cm-1) than undoped reduced graphene oxide laminate (51 S cm-1) but also revealed 119% larger EMI shielding effectiveness (33.2 dB) than the undoped one (15.5 dB) at the same sample thickness.

AB - Herein, for the first time, we demonstrate that a laminated structure of sulfur-doped reduced graphene oxide (SrGO) provides significant potential for electromagnetic interference shielding applications. In this study, SrGO was prepared through the reaction between graphene oxide and hydrogen disulfide (H2S) gas at elevated temperatures. The doping degree of S was controlled through varying the time and temperature of the reaction and the maximum doping content of 5.6 wt% was achieved. Because of the n-type doping contribution of the S atom to the doped graphene, SrGO laminate not only revealed a 47% larger electrical conductivity (75 S cm-1) than undoped reduced graphene oxide laminate (51 S cm-1) but also revealed 119% larger EMI shielding effectiveness (33.2 dB) than the undoped one (15.5 dB) at the same sample thickness.

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Sulfur-doped graphene laminates for EMI shielding applications

Abstract

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