Stable Field Emission from Layered MoS2 Nanosheets in High Vacuum and Observation of 1/f Noise

Nanomaterials and Nanotechnology

Mahendra A. More¹  M. Thripuranthaka¹  Pracheetee D. Joag¹  Dattatray J. Late¹  Ranjit V. Kashid¹  Chandra S. Rout¹ 

关键词: Layered materials;    MoS2;    Electron emission;    Noise measurement;    Raman spectroscopy;   

DOI  :  10.5772/60071

来源: InTech

【 摘 要 】

Field emission and current noise of hydrothermally synthesized MoS2 nanosheets are investigated in ultra-high-vacuum and industrially suited high-vacuum conditions. The study reveals that the emission turn-on field is pressure dependent. Moreover, the MoS2 nanosheets exhibit more stable field-electron emission in high-vacuum than in ultra-high-vacuum conditions. The investigations on field-emission current fluctuations show features of 1/f-type noise in ultra-high-vacuum and high-vacuum conditions, attributed to adsorption and desorption processes. The post-field-emission results indicate the MoS2 nanosheets are a robust field emitter in high-vacuum conditions.

【 授权许可】

Unknown