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    • 3. 发明申请
    • ZIRCONIUM-DOPED BST MATERIALS AND MOCVD PROCESS FOR FORMING SAME
    • ZIRCONIUM-DOPED BST材料和MOCVD工艺形成
    • WO0245128A2
    • 2002-06-06
    • PCT/US0143984
    • 2001-11-14
    • ADVANCED TECH MATERIALSSTAUF GREGORY TCHEN PHILIP SROEDER JEFFREY F
    • STAUF GREGORY TCHEN PHILIP SROEDER JEFFREY F
    • C23C16/40H01L21/314H01L21/316H01L
    • C23C16/409H01L21/31691
    • A Zr-doped (Ba,Sr)TiO3 perovskite crystal material dielectric thin film. Such dielectric thin film is characterized by at least one of the characteristics including: (a) a breakdown strength of at least 1.3 MV/cm; (b) a leakage current of not more than 1x10 A/cm under applied voltage of about +/-3V or above and at temperature of about 100 DEG C or above; and (c) an energy storage density of at least 15 J/cc. The dielectric thin film comprises zirconium dopant in the amount of 0.5% to 50% by total weight of the Zr-doped (Ba,Sr)TiO3 perovskite crystal material, preferably 2-15%, more preferably 4% to 14%, and most preferably 5% to 12%. Such dielectric thin film in a preferred aspect is deposited by a MOCVD process using metal precursors Ba(thd)2-polyamine, Sr(thd)2-polyamine, Zr(thd)4, and Ti(OiPr)2(thd)2 at a deposition temperature inthe range from about 560 DEG C to 700 DEG C.
    • Zr掺杂(Ba,Sr)TiO3钙钛矿晶体材料介电薄膜。 这种介电薄膜的特征在于以下特征中的至少一个:(a)击穿强度至少为1.3MV / cm; (b)在大约+/- 3V或以上的施加电压和约100℃或更高的温度下的泄漏电流不大于1×10 -3 A / cm 2; 和(c)至少15J / cc的储能密度。 电介质薄膜包含Zr掺杂(Ba,Sr)TiO 3钙钛矿晶体材料的总重量的0.5〜50%的锆掺杂剂,优选2-15%,更优选4%〜14%,最多 优选5%至12%。 通过使用金属前体Ba(thd)2-多胺,Sr(thd)2 - 多胺,Zr(thd)4和Ti(OiPr)2(thd)2的MOCVD法沉积这种电介质薄膜, 沉积温度在约560℃至700℃的范围内。