Issue 71, 2014
From the journal:

RSC Advances

Long-term air-stable n-type doped graphene by multiple lamination with polyethyleneimine

Myoung-Jun Cha,a   Wooseok Song,c   Yooseok Kim,ad   Dae Sung Jung,b   Min Wook Jung,ac   Su Il Lee,a   Prashanta Dhoj Adhikari,a   Ki-Seok Anc  and  Chong-Yun Park*ab  

* Corresponding authors

a Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
E-mail: cypark@skku.edu

b Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea

c Thin Film Materials Research Group, Korea Research Institute of Chemical Technology, Yuseong Post Office Box 107, Daejeon 305-600, Republic of Korea

d Division of Material Science, Korea Basic Science Institute, Daejeon 305-333, Republic of Korea

Abstract

We demonstrate homogeneous and air-stable n-type doping of graphene grown by thermal chemical vapor deposition. Laminated Polyethyleneimine (PEI) layers fabricated by a simple polymer solution coating were employed. The doping stability of multiple laminated structures (graphene/PEI, PEI/graphene, and graphene/PEI/graphene) was systematically investigated. The resulting graphene/PEI/graphene laminated structure was highly stable in air. Moreover, the work function and carrier concentration of doped graphene can be tuned by altering the laminated structure.

Graphical abstract: Long-term air-stable n-type doped graphene by multiple lamination with polyethyleneimine

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Article information

DOI
https://doi.org/10.1039/C4RA04518A
Article type
Paper
Submitted
14 May 2014
Accepted
04 Aug 2014
First published
04 Aug 2014

RSC Adv., 2014,4, 37849-37853

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Long-term air-stable n-type doped graphene by multiple lamination with polyethyleneimine

M. Cha, W. Song, Y. Kim, D. S. Jung, M. W. Jung, S. I. Lee, P. D. Adhikari, K. An and C. Park, RSC Adv., 2014, 4, 37849 DOI: 10.1039/C4RA04518A

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