Electron field emission from 𝑠���?2-induced insulating to metallic behaviour of amorphous carbon (�?-C) films

Bulletin of materials science

P N Viswakarma²  Pitamber Mahanandia²  Karuna Kar Nanda¹  Prasad Vishnu Bhotla²  S V Subramanyam² 

[1] Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$Materials Research Centre, Indian Institute of Science, Bangalore 560 012, IndiaMaterials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$;Department of Physics, Indian Institute of Science, Bangalore 560 012, India$$Department of Physics, Indian Institute of Science, Bangalore 560 012, IndiaDepartment of Physics, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Amorphous carbon;    transport;    field emission.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The influence of concentration and size of 𝑠ð�?��?² cluster on the transport properties and electron field emissions of amorphous carbon films have been investigated. The observed insulating to metallic behaviour from reduced activation energy derived from transport measurement and threshold field for electron emission of ð‘�?-C films can be explained in terms of improvements in the connectivity between 𝑠ð�?��?² clusters. The connectivity is resulted by the cluster concentration and size. The concentration and size of 𝑠ð�?��?² content cluster is regulated by the coalescence of carbon globules into clusters, which evolves with deposition conditions.

【 授权许可】

Unknown