Field emission properties of tungsten films exhibiting a rod-like structure

Autor:	Chin Tang Hsieh, Jyh-Ming Ting
Rok vydání:	2005
Předmět:	Materials science Field (physics) General Physics and Astronomy chemistry.chemical_element Nanotechnology Tungsten Microstructure Field electron emission chemistry Deposition (phase transition) High field Physical and Theoretical Chemistry Thin film Composite material
Zdroj:	Chemical Physics Letters. 413:84-87
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2005.07.050
Popis:	A thermal evaporation method was used for the deposition of tungsten films. The tungsten source was resistively heated to a temperature between 1810 and 2010 °C for the deposition. The resulting BCC α-tungsten film exhibits a rod-like structure and a highly preferred (2 0 0) orientation. This unique microstructure leads to field emission properties that are not only superior to the other forms of tungsten but also better than most of the other thin film emitters. A low turn-on field of 1.3 V/μm and an extremely high field enhanced factor of 398095 were obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9a60401b31dbda4554a6c0ab833715b0 https://doi.org/10.1016/j.cplett.2005.07.050 Zobrazit plný text záznamu Full Text from ScienceDirect