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    • 3. 发明申请
    • Method for depositing ferroelectric thin films using a mixed oxidant gas
    • 使用混合氧化剂气体沉积铁电薄膜的方法
    • US20070058415A1
    • 2007-03-15
    • US11520623
    • 2006-09-14
    • Dong-Hyun ImByoung-Jae BaeJi-Eun LimDong-Chul YooYeon-Kyu Jung
    • Dong-Hyun ImByoung-Jae BaeJi-Eun LimDong-Chul YooYeon-Kyu Jung
    • G11C11/22
    • H01L28/55C23C16/409H01L27/11502H01L28/65
    • Disclosed are methods of forming ferroelectric material layers introducing a plurality of metallorganic source compounds into the reaction chamber, the source compounds being supplied in an appropriate ratio for forming the ferroelectric material. These metallorganic source compounds are, in turn, reacted with a NyOx/O2 oxidant gas mixture in which the NyOxcomponent(s) represents at least 50 volume percent of the oxidant gas. This mixture of metallorganic source compounds and oxidant gas mixture(s) are maintained at a deposition temperature and deposition pressure within the reaction chamber suitable for causing a reaction between the metallorganic source compounds and the oxidant gas for a deposition period sufficient to form the ferroelectric material layer. The resulting ferroelectric material layers exhibit improved uniformity, for example, near the interface with the bottom electrode.
    • 公开了形成将多个金属有机源化合物引入反应室的铁电材料层的方法,以适当的比例供给源化合物以形成铁电体材料。 这些金属有机源化合物又与N 2 O 2 O 2 / O 2 O 2氧化剂气体混合物反应,其中N“ y O x分量代表氧化剂气体的至少50体积%。 金属有机源化合物和氧化剂气体混合物的混合物保持在反应室内的沉积温度和沉积压力,适于在金属有机源化合物和氧化剂气体之间产生足以形成铁电材料的沉积时间 层。 所得到的铁电材料层表现出改善的均匀性,例如在与底部电极的界面附近。