Chemical Doping of Graphene by Altretamine(2,4,6-Tris [dimethylamino]-1,3,5-Triazine)
- Authors
- Park, Sunmin; Yang, Sena; Lim, Heeseon; Lee, Hangil
- Issue Date
- Jul-2011
- Publisher
- KOREAN CHEMICAL SOC
- Keywords
- Altretamine; Chemical doping; Epitaxial graphene; CLPES; LEED
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.32, no.7, pp 2199 - 2202
- Pages
- 4
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 32
- Number
- 7
- Start Page
- 2199
- End Page
- 2202
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/12536
- DOI
- 10.5012/bkcs.2011.32.7.2199
- ISSN
- 0253-2964
1229-5949
- Abstract
- The electronic properties of altretamine(2,4,6-tris [dimethylamino]-1,3,5-triazine) adsorbed on epitaxial graphene (EG) were investigated by core-level photoemission spectroscopy (CLPES) in conjunction with low energy electron diffraction (LEED). We found that altretamine molecule adsorbed onto interface layer (S1) of graphene as we confirm decrement of S1 peak using CLPES and haziness of LEED pattern. Moreover, the measured work function changes verified that increased adsorption of the altretamine on graphene layer showed n-type doping characteristics due to charge transfer from altretamine to graphene through the nitrogens. Two distinct nitrogen bonding feature associated with the N 1s peak was clearly observed in the core-level spectra indicating two different chemical environments.
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