Method for depositing and planarizing fluorinated BPSG films
    3.
    发明授权
    Method for depositing and planarizing fluorinated BPSG films 有权
    氟化BPSG膜的沉积和平面化方法

    公开(公告)号:US06261975B1

    公开(公告)日:2001-07-17

    申请号:US09262782

    申请日:1999-03-04

    IPC分类号: H01L2131

    摘要: A method for improving the reflow characteristics of a BPSG film. According to the method, a fluorine- or other halogen-doped BPSG layer is deposited over a substrate and reflowed using a rapid thermal pulse (RTP) method. The use of such an RTP reflow method results in superior reflow characteristics as compared to a 20-40 minute conventional furnace reflow process. The inventors discovered that reflowing FBPSG films in a conventional furnace may result in the highly mobile fluorine atoms diffusing from the film prior to completion of the anneal. Thus, the FBPSG layer loses the improved reflow characteristics provided by the incorporation of fluorine into the film. The RTP reflow reflows the film in a minimal amount of time (e.g., 10-90 seconds depending on the temperature used to reflow the layer and the degree of planarization required among other factors). Thus, the fluorine atoms within the FBPSG layer do not have sufficient time to migrate from the layer even if the layer is deposited over a PETEOS oxide or similar layer.

    摘要翻译: 一种改善BPSG膜的回流特性的方法。 根据该方法,将氟或其它卤素掺杂的BPSG层沉积在衬底上并使用快速热脉冲(RTP)方法回流。 与20-40分钟的常规炉回流工艺相比,使用这种RTP回流方法导致优异的回流特性。 本发明人发现,在常规炉中回流FBPSG膜可能导致高度可移动的氟原子在退火完成之前从膜扩散。 因此,FBPSG层失去了通过将氟结合到膜中而提供的改进的回流特性。 RTP回流以最小的时间(例如10-90秒,取决于用于回流层的温度和其他因素所需的平坦化程度)来回流薄膜。 因此,即使该层沉积在PETEOS氧化物或类似层上,FBPSG层内的氟原子也不具有从该层迁移的足够时间。

    Method of forming phosphosilicate glass having a high wet-etch rate
    4.
    发明授权
    Method of forming phosphosilicate glass having a high wet-etch rate 失效
    形成具有高湿蚀刻速率的磷硅酸盐玻璃的方法

    公开(公告)号:US6153540A

    公开(公告)日:2000-11-28

    申请号:US34850

    申请日:1998-03-04

    摘要: A method and apparatus for controlling the wet-etch rate and thickness uniformity of a dielectric layer, such as a phosphosilicate glass layer (PSG) layer. The method is based upon the discovery that the atmospheric pressure at which a PSG layer is deposited affects the wet-etch rate of the same, during a subsequent processing step, as well as the layer's thickness uniformity. As a result, the method of the present invention includes the step of pressurizing the atmospheric pressure of a semiconductor process chamber within a predetermined range after the substrate is deposited therein. Flowed into the deposition zone is a process gas comprising a silicon source, all oxygen source, and a phosphorous source; and maintaining the deposition zone at process conditions suitable for depositing a phosphosilicate glass layer on the substrate.

    摘要翻译: 一种用于控制诸如磷硅酸盐玻璃层(PSG)层的介电层的湿蚀刻速率和厚度均匀性的方法和装置。 该方法基于以下发现:沉积PSG层的大气压力在随后的处理步骤期间影响其湿蚀刻速率以及层的厚度均匀性。 结果,本发明的方法包括在衬底沉积之后在预定范围内对半导体处理室的大气压进行加压的步骤。 流入沉积区的是包括硅源,全氧源和磷源的工艺气体; 以及将沉积区保持在适合于在基底上沉积磷硅酸盐玻璃层的工艺条件。