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    • 52. 发明公开
    • SPUTTERING TARGET AND METHOD FOR PRODUCING SAME
    • SPERTERTARGET UND VERFAHREN ZUR HERSTELLUNG DAVON
    • EP3141630A1
    • 2017-03-15
    • EP16172411.7
    • 2013-02-15
    • MITSUBISHI MATERIALS CORPORATION
    • Zhang, ShoubinUmemoto, KeitaShoji, Masahiro
    • C23C14/34C23C14/06
    • H01J37/3429B22F3/10B22F2201/20B22F2301/00B22F2999/00C22C1/0425C22C32/0089C23C14/0623C23C14/08C23C14/087C23C14/3414C23C14/35B22F3/1007
    • Provided is a sputtering target which contains Na in high concentration and, despite this, is inhibited from discoloration, generating spots, and causing abnormal electrical discharge and which has high strength and rarely breaks. Also provided is a method for producing the sputtering target. The sputtering target has a component composition that contains 10 to 40 at% of Ga and 1.0 to 15 at% of Na as metal element components other than S and Se, with the remainder composed of Cu and unavoidable impurities, wherein the Na is contained in the form of at least one Na compound selected from sodium sulfide and sodium selenide. The sputtering target has a theoretical density ratio of 90% or higher, a flexural strength of 100 N/mm 2 or higher, a bulk resistivity of 1 mΩ·cm or less, and a content of oxygen of 200 to 2000 ppm. The number of 0.05 mm 2 or larger aggregates of the Na compound present per cm 2 area of the target surface is 1 or less on average.
    • 提供了含有高浓度的Na的溅射靶,尽管如此,其抑制了变色,产生斑点,引起异常放电,并且具有高强度并且很少破裂。 还提供了溅射靶的制造方法。 溅射靶具有含有10〜40at%的Ga和1.0〜15at%的作为S和Se以外的金属元素成分的Na的组成成分,其余部分由Cu和不可避免的杂质组成,其中Na含有 至少一种选自硫化钠和硒化钠的Na化合物的形式。 溅射靶的理论密度比为90%以上,弯曲强度为100N / mm 2以上,体积电阻率为1μm·cm以下,氧含量为200〜2000ppm。 目标表面的每cm 2面积存在的Na化合物的0.05mm 2以上聚集体的数量平均为1以下。