Ishikawa, Ryousuke and Bando, Masashi and Morimoto, Yoshitaka and Sandhu, Adarsh (2011) Doping graphene films via chemically mediated charge transfer. Nanoscale Research Letters, 6 (1). pp. 1-5.
Official URL: http://www.nanoscalereslett.com/content/6/1/111
Transparent conductive films (TCFs) are critical components of a myriad of technologies including flat panel displays, light-emitting diodes, and solar cells. Graphene-based TCFs have attracted a lot of attention because of their high electrical conductivity, transparency, and low cost. Carrier doping of graphene would potentially improve the properties of graphene-based TCFs for practical industrial applications. However, controlling the carrier type and concentration of dopants in graphene films is challenging, especially for the synthesis of p-type films. In this article, a new method for doping graphene using the conjugated organic molecule, tetracyanoquinodimethane (TCNQ), is described. Notably, TCNQ is well known as a powerful electron accepter and is expected to favor electron transfer from graphene into TCNQ molecules, thereby leading to p-type doping of graphene films. Small amounts of TCNQ drastically improved the resistivity without degradation of optical transparency. Our carrier doping method based on charge transfer has a huge potential for graphene-based TCFs.
|Subjects:||Physical Science > Nano objects|
Material Science > Nanochemistry
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Chemistry|
|Deposited On:||20 Oct 2011 10:13|
|Last Modified:||20 Oct 2011 10:13|
Repository Staff Only: item control page