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1. 发明授权

US6057250A Low temperature reflow dielectric-fluorinated BPSG 失效
标题翻译：低温回流电介质氟化BPSG
公开(公告)号：US6057250A
公开(公告)日：2000-05-02
申请号：US14431
申请日：1998-01-27
申请人： Markus Kirchhoff , Ashima Chakravarti , Matthias Ilg , Kevin A. McKinley , Son V. Nguyen , Michael J. Shapiro
发明人： Markus Kirchhoff , Ashima Chakravarti , Matthias Ilg , Kevin A. McKinley , Son V. Nguyen , Michael J. Shapiro
IPC分类号： H01L21/31 , C23C16/40 , H01L21/316 , H01L21/225 , H01L21/469
CPC分类号： H01L21/02271 , C23C16/401 , H01L21/02131 , H01L21/02211 , H01L21/31625 , H01L21/31629
摘要： An apparatus and method are provided for forming a fluorine doped borophosphosilicate (F-BPSG) glass on a semiconductor device using a low pressure chemical vapor deposition process. The F-BPSG glass exhibits a substantially void-free and particle-free layer on the substrate for structures having gaps as narrow as 0.10 microns and with aspect ratios of 6:1. The reactant gases include sources of boron and phosphorous dopants, oxygen and a mixture of TEOS and FTES. Using a mixture of TEOS and FTES in a low pressure CVD process provides a F-BPSG layer having the above enhanced characteristics. It is a preferred method of the invention to perform the deposition at a temperature of about 750-850.degree. C. and a pressure of 1 to 3 torr to provide for in situ reflow of the F-BPSG during the deposition process. An anneal is also preferred under similar conditions in the same chemical vapor deposition chamber to further planarize the F-BPSG surface. A F-BPSG glass and semiconductor wafers having a layer of fluorine doped BPSG thereon formed by the method and apparatus of the invention are also provided.
摘要翻译：提供了一种用于在半导体器件上使用低压化学气相沉积工艺形成氟掺杂硼磷硅酸（F-BPSG）玻璃的装置和方法。 F-BPSG玻璃在基板上表现出基本上无空隙和无颗粒的层，其结构具有窄至0.10微米的间隙，纵横比为6:1。反应物气体包括硼和磷掺杂剂的源，氧和TEOS和FTES的混合物。在低压CVD工艺中使用TEOS和FTES的混合物提供具有上述增强特性的F-BPSG层。本发明的优选方法是在约750-850℃的温度和1至3托的压力下进行沉积，以在沉积过程中提供F-BPSG的原位回流。在相同的化学气相沉积室中的相似条件下还优选退火以进一步平坦化F-BPSG表面。还提供了通过本发明的方法和装置形成的具有氟掺杂BPSG层的F-BPSG玻璃和半导体晶片。

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