Compositions – Electrically conductive or emissive compositions – Metal compound containing
Reexamination Certificate
2011-08-30
2011-08-30
Kopec, Mark (Department: 1761)
Compositions
Electrically conductive or emissive compositions
Metal compound containing
C204S298130
Reexamination Certificate
active
08007693
ABSTRACT:
Provided is a zinc oxide transparent electric conductor having zinc oxide (ZnO) as its principal component, containing an element to become an n-type dopant to zinc oxide, containing metal M in which P(P=(G+H mix)/RT, wherein G is the Gibbs free energy at temperature T of the metal, H mix is the mixing enthalpy at temperature T of zinc oxide and the metal, R is the gas constant, and T is the temperature) as a parameter showing the wettability with zinc oxide is 6 or less and in which its resistivity is smaller than the resistivity of zinc oxide added with the n-type dopant, and wherein concentration of metal M in relation to the total atomicity of zinc and the n-type dopant and metal M, which are all metal atoms configuring the zinc oxide transparent electric conductor, is 0.05 to 2.0 at %. In the development of a transparent electric conductor that does not contain raw material In which is expensive and with concern of resource depletion, provided is a low resistivity transparent electric conductor by exceeding the limits of the conventional development technique of the single dopant method, presenting guidelines for selecting a secondary additive material effective in achieving low resistivity, and indicating types of specific materials and the appropriate concentration range.
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Ikisawa Masakatsu
Yahagi Masataka
Howson & Howson LLP
JX Nippon Mining & Metals Corporation
Kopec Mark
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