Enhancement of CO detection in Al doped graphene

Autor:	Ao, Z. M., Yang, J., Li, S., Jiang, Q.
Rok vydání:	2008
Předmět:	Condensed Matter - Materials Science Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1016/j.cplett.2008.07.039
Popis:	A principle of enhancement CO adsorption was developed theoretically by using density functional theory through doping Al into graphene. The results show that the Al doped graphene has strong chemisorption of CO molecule by forming Al-CO bond, where CO onto intrinsic graphene remains weak physisorption. Furthermore, the enhancement of CO sensitivity in the Al doped graphene is determined by a large electrical conductivity change after adsorption, where CO absorption leads to increase of electrical conductivity upon via introducing large amount of shallow acceptor states. Therefore, this newly developed Al doped graphene would be an excellent candidate for sensing CO gas. Comment: 16 pages and 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0806.3172 Zobrazit plný text záznamu View this record from Arxiv