Electrical characteristics of La0.5Sr0.5CoO3 as a cathode

✍ Scribed by Tsuyoshi Ichibakase

• Publisher: Wiley (John Wiley & Sons)
• Year: 2011
• Tongue: English
• Weight: 352 KB
• Volume: 94
• Category: Article
• ISSN: 1942-9533
• DOI: 10.1002/ecj.10175

✦ Synopsis

Abstract

La~0.5~Sr~0.5~CoO~3~ was employed as a cathode for the first time when a plasma display panel was used on a handheld personal computer. It has favorable sputtering resistance characteristics and stable discharge characteristics in gases. In this report, the electrical characteristics of La~0.5~Sr~0.5~CoO~3~ are investigated through an analysis of a DC plasma panel fabricated as a prototype. The dimensions of the test plasma panel were measured exactly by an end‐measuring machine, and its electrical properties were estimated. In the analysis of the DC plasma panel, LaB~6~ and metallic Ni cathodes were investigated in the same way, and a comparative analysis was carried out. In the analysis of a sputtering experiment conducted in an AC sputtering apparatus, the sputter rate of La~0.5~Sr~0.5~CoO~3~ was greater than that of LaB~6~, and the sputter rate of La~0.5~Sr~0.5~CoO~3~ used as a cathode was smaller than that of other materials. La~0.5~Sr~0.5~CoO~3~ has a greater secondary‐emission coefficient γ than LaB~6~ or metallic Ni. It is inferred that the greater secondary‐emission coefficient γ of La~0.5~Sr~0.5~CoO~3~ reduces the sputter rate when it is used as a cathode. © 2011 Wiley Periodicals, Inc. Electron Comm Jpn, 94(5): 55–62, 2011; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/ecj.10175