TY - JOUR
T1 - Electron field emission from screen-printed graphene/DWCNT composite films
AU - Xu, Jinzhuo
AU - Pan, Rong
AU - Chen, Yiwei
AU - Piao, Xianqin
AU - Qian, Min
AU - Feng, Tao
AU - Sun, Zhuo
PY - 2013/2/25
Y1 - 2013/2/25
N2 - The electron field emission properties of graphene/double-walled carbon nanotube (DWCNT) composite films prepared by screen printing have been systematically studied. Comparing with the pure DWCNT films and pure graphene films, a significant enhancement of electron emission performance of the composite films are observed, such as lower turn-on field, higher emission current density, higher field enhancement factor, and long-term stability. The optimized composite films with 20% weight ratio of graphene show the best electron emission performance with a low turn-on field of 0.62 V μm -1 (at 1 μA cm-2) and a high field enhancement factor β of 13,000. A model of the graphene/DWCNT composite films is proposed, which indicate that a certain amount of graphene will contribute the electron transmission in the silver substrate/composite films interface and in the interior of composite films, and finally improve the electron emission performance of the graphene/DWCNT composite films.
AB - The electron field emission properties of graphene/double-walled carbon nanotube (DWCNT) composite films prepared by screen printing have been systematically studied. Comparing with the pure DWCNT films and pure graphene films, a significant enhancement of electron emission performance of the composite films are observed, such as lower turn-on field, higher emission current density, higher field enhancement factor, and long-term stability. The optimized composite films with 20% weight ratio of graphene show the best electron emission performance with a low turn-on field of 0.62 V μm -1 (at 1 μA cm-2) and a high field enhancement factor β of 13,000. A model of the graphene/DWCNT composite films is proposed, which indicate that a certain amount of graphene will contribute the electron transmission in the silver substrate/composite films interface and in the interior of composite films, and finally improve the electron emission performance of the graphene/DWCNT composite films.
KW - Double-walled carbon nanotube
KW - Field emission
KW - Graphene
KW - Screen printing
UR - https://www.scopus.com/pages/publications/84869873008
U2 - 10.1016/j.jallcom.2012.10.095
DO - 10.1016/j.jallcom.2012.10.095
M3 - 文章
AN - SCOPUS:84869873008
SN - 0925-8388
VL - 551
SP - 348
EP - 351
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -