Chemical Doping of Graphene by Altretamine(2,4,6 Tris[dimethylamino]-1,3,5-Triazine)

Bulletin of the Korean chemical society

Heeseon Lim¹  Hangil Lee¹  Sena Yang¹  Sunmin Park¹ 

关键词: Altretamine;    Chemical doping;    Epitaxial graphene;    CLPES;    LEED;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

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.

【 授权许可】

Unknown