Development of New Transparent Conductive Material of Mg(OH)2-C

Abstract

Indium oxide doped with tin oxide, ITO has beenwidely used as a key material for liquid crystal displaytechnologies because of its high transparency and electri-cal conductivity [1]. Recently, however, the scarcity ofrare-metal indium has been strongly pointed out so thatalternative transparent and electrical conductive materi-als have been actively studied over the last decade [2–4].As mentioned above, most transparent conductive ma-terials are based upon metal oxides. It is well knownthat the metal oxides are semiconductor so that in orderto obtain high electric conductivity together with opticaltransparency, the consideration on a balance between theband gap and conductivity is very important.Recently, Kondoh’s group reported very interesting re-sults on the transparency for Mg-C compounds [5]. Thestructure of compounds was identified to be amorphous.The elemental composition was controlled by magnesiumtarget area fraction. The colored glassy films were ob-tained.