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。