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    • 3. 发明授权
    • Method for producing insulator structures including a main layer and a barrier layer
    • 用于制造包括主层和阻挡层的绝缘体结构的方法
    • US07052970B2
    • 2006-05-30
    • US10798863
    • 2004-03-12
    • Joerg Radecker
    • Joerg Radecker
    • H01L21/76
    • H01L21/76224
    • In order to produce insulator structures (8), insulator trenches (21) with aspect ratios of greater than 4:1 are introduced into a semiconductor substrate (1) from a substrate surface (10) and filled with an insulator filling (3). The insulator filling (3) is formed from a plurality of portions (31, 32, 33, 34) which are deposited successively in situ in an HDP/CVD process chamber in the course of an HDP/CVD deposition process. A main layer (33) is provided made from fluorine-doped silicon oxide with good filling properties. A barrier layer (32) is formed directly before the deposition of the main layer (33), said barrier layer preventing an outgassing of the fluorine from the fluorine-doped silicon oxide (33), an interaction of the fluorine with the semiconductor substrate (1) and a formation of defect areas (6) with oxide of low quality in the area of the insulator filling (3). The barrier (32) makes it possible to form nondegrading p-channel transistors (73) in the area of the substrate surface (10). An additional layer (31) and a termination layer (34) respectively effect an adaptation and linking of the main layer (33) and of the barrier layer (32) to preceeding and succeeding process steps.
    • 为了制造绝缘体结构(8),纵横比大于4:1的绝缘体沟槽(21)从衬底表面(10)引入到半导体衬底(1)中,并填充有绝缘体填充物(3)。 绝缘体填充物(3)由多个部分(31,32,33,34)形成,这些部分在HDP / CVD沉积过程中在HDP / CVD处理室中原位沉积。 由氟掺杂氧化硅制成的主层(33)具有良好的填充性能。 阻挡层(32)直接在主层(33)的沉积之前形成,所述阻挡层防止氟从氟掺杂氧化硅(33)中脱气,氟与半导体衬底的相互作用( 1)和在绝缘体填充区域(3)中形成具有低质量的氧化物的缺陷区域(6)。 屏障(32)使得可以在衬底表面(10)的区域中形成非劣化的p沟道晶体管(73)。 附加层(31)和终止层(34)分别影响主层(33)和阻挡层(32)的适配和链接到前面和后续的处理步骤。
    • 9. 发明授权
    • Methods of forming isolation structures for semiconductor devices by performing a dry chemical removal process
    • 通过干式化学去除方法形成半导体器件隔离结构的方法
    • US08716102B2
    • 2014-05-06
    • US13584981
    • 2012-08-14
    • Frank JakubowskiJoerg RadeckerJoanna Wasyluk
    • Frank JakubowskiJoerg RadeckerJoanna Wasyluk
    • H01L27/092
    • H01L21/76224H01L21/02065H01L21/31053H01L21/31116
    • A method includes forming a patterned mask comprised of a polish stop layer positioned above a protection layer above a substrate, performing at least one etching process through the patterned mask layer on the substrate to define a trench in the substrate, and forming a layer of silicon dioxide above the patterned mask layer such that the layer of silicon dioxide overfills the trench. The method also includes removing portions of the layer of silicon dioxide positioned outside of the trench to define an isolation structure, performing a dry, selective chemical oxide etching process that removes silicon dioxide selectively relative to the material of the polish stop layer to reduce an overall height of the isolation structure, and performing a selective wet etching process to remove the polish stop layer selectively relative to the isolation region.
    • 一种方法包括形成图案化掩模,其由位于衬底上方的保护层上方的抛光停止层构成,通过衬底上的图案化掩模层执行至少一个蚀刻工艺,以在衬底中形成沟槽,并形成硅层 在图案化掩模层之上的二氧化硅,使得二氧化硅层过度填充沟槽。 该方法还包括去除位于沟槽外部的二氧化硅层的部分以限定隔离结构,执行干燥的选择性化学氧化物蚀刻工艺,其相对于抛光停止层的材料选择性地去除二氧化硅以减少整体 隔离结构的高度,并且进行选择性湿蚀刻工艺以相对于隔离区选择性地去除抛光停止层。
    • 10. 发明授权
    • Methods of forming isolation structures for semiconductor devices by performing a deposition-etch-deposition sequence
    • 通过执行沉积蚀刻沉积顺序形成半导体器件的隔离结构的方法
    • US08603895B1
    • 2013-12-10
    • US13610263
    • 2012-09-11
    • Frank JakubowskiJoerg RadeckerRalf Willecke
    • Frank JakubowskiJoerg RadeckerRalf Willecke
    • H01L21/76
    • H01L21/76232
    • In one example, the method includes forming a patterned etch mask above a semiconducting substrate, performing an etching process through the patterned etch mask to thereby form a trench in the substrate, performing a first deposition process to form a first layer of insulating material above the patterned etch mask and in the trench, and performing an etching process on the first layer of insulating material such that the post-etch thickness of the first layer of insulating material is less than an as-deposited thickness of the first layer of insulating material. The method also includes performing a second deposition process to form a second layer of insulating material on the etched first layer of insulating material, wherein the second layer of insulating material overfills the trench, and removing portions of the etched first layer of insulating material and the second layer of insulating material positioned above the patterned etch mask.
    • 在一个示例中,该方法包括在半导体衬底上形成图案化蚀刻掩模,通过图案化蚀刻掩模执行蚀刻工艺,从而在衬底中形成沟槽,执行第一沉积工艺以形成第一层绝缘材料 图案化的蚀刻掩模和在沟槽中,并且对第一绝缘材料层进行蚀刻处理,使得第一绝缘材料层的后蚀刻厚度小于第一绝缘材料层的沉积厚度。 该方法还包括执行第二沉积工艺以在蚀刻的第一绝缘材料层上形成第二绝缘材料层,其中第二绝缘材料层超过沟槽,以及去除蚀刻的第一绝缘材料层的部分和 位于图案化蚀刻掩模上方的第二绝缘材料层。