N-type buried layer drive-in recipe to reduce pits over buried antimony layer
    3.
    发明授权
    N-type buried layer drive-in recipe to reduce pits over buried antimony layer 有权
    N型掩埋层驱动配方,减少埋在锑层上的坑

    公开(公告)号:US06444551B1

    公开(公告)日:2002-09-03

    申请号:US09910202

    申请日:2001-07-23

    IPC分类号: H01L21425

    CPC分类号: H01L21/2253 H01L21/74

    摘要: A method of driving-in antimony into a wafer, including the following steps. A wafer is loaded into an annealing furnace/tool. The wafer having an area of implanted antimony ions. The wafer is annealed a first time at a first temperature in the presence of only a first nitrogen gas flow rate. The wafer is ramped-down from the first temperature to a second temperature in the presence of only an oxygen gas flow rate. The wafer is maintained in the presence of the of oxygen gas flow rate at the second temperature. The wafer is ramped-up from the second temperature to a third temperature in the presence of only the oxygen gas flow rate. The wafer is annealed a second time at the third temperature in the presence of only a second nitrogen gas flow rate to drive-in the antimony ions within the area of implanted antimony.

    摘要翻译: 一种将锑引入晶片的方法,包括以下步骤。 将晶片装载到退火炉/工具中。 该晶片具有注入的锑离子的面积。 在仅有第一氮气流量存在的情况下,在第一温度下第一次对晶片进行退火。 在只有氧气流量存在的情况下,晶片从第一温度下降到第二温度。 在第二温度下,在存在氧气流速的情况下保持晶片。 在仅存在氧气流速的情况下,晶片从第二温度升高到第三温度。 在仅第二氮气流速存在的情况下,在第三温度下第二次退火晶片,以驱动在注入锑的区域内的锑离子。