High-field emission performance of a NiFe2O4/rGO/CNT tertiary nanocomposite

作者：Hareesh K; Suryawanshi Sachin R; Shateesh B; Phase Deodatta M; Dahiwale Shailendra S; Bhoraskar Vasanth N; Haram Santhosh K; More Mahendra A^*; Dhole Sanjay D^*

来源：RSC Advances, 2016, 6(32): 26745-26751.

DOI：10.1039/c6ra02198k

Herein, we report the field emission properties of NiFe2O4/reduced graphene oxide/carbon nanotubes (NGC) and compared them with the field emission properties of NiFe2O4/carbon nanotubes (NC) and NiFe2O4/reduced graphene oxide (NG). The NGC nanocomposite showed a very low turn-on field of similar to 0.4 V mu m(-1) and a high emission current density of similar to 8.228 mA cm(-2) at a low applied electric field of 1.6 V mu m(-1). In addition, it exhibited extremely good emission current stability at a preset value of similar to 20 mu A. The observed very low turn on field of the NGC nanocomposite is due to its lower value of effective work 1.92 eV), and the results suggest the potential of the synthesized emitter for practical applications in vacuum micro-electronics/nano-electronics.

• 出版日期2016