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    • 26. 发明申请
    • HYBRID ORIENTATION SEMICONDUCTOR STRUCTURE WITH REDUCED BOUNDARY DEFECTS AND METHOD OF FORMING SAME
    • 具有减少边界缺陷的混合方向半导体结构及其形成方法
    • US20110086473A1
    • 2011-04-14
    • US12972771
    • 2010-12-20
    • Haizhou YinJohn A. OttKatherine L. SaengerChun-Yung Sung
    • Haizhou YinJohn A. OttKatherine L. SaengerChun-Yung Sung
    • H01L21/8238H01L21/265
    • H01L21/02694H01L21/02532H01L21/76264Y10S438/973
    • The present invention provides an improved amorphization/templated recrystallization (ATR) method for forming hybrid orientation substrates and semiconductor device structures. A direct-silicon-bonded (DSB) silicon layer having a (011) surface crystal orientation is bonded to a base silicon substrate having a (001) surface crystal orientation to form a DSB wafer in which the in-plane direction of the (011) DSB layer is aligned with an in-plane direction of the (001) base substrate. Selected regions of the DSB layer are amorphized down to the base substrate to form amorphized regions aligned with the mutually orthogonal in-plane directions of the (001) base substrate, followed by recrystallization using the base substrate as a template. This optimal arrangement of DSB layer, base substrate, and amorphized region orientation provides a near-vertical, essentially defect-free boundary between original-orientation and changed-orientation silicon regions, thus enabling complete boundary region removal with smaller footprint shallow trench isolation than possible with ATR methods not so optimized.
    • 本发明提供用于形成混合取向基板和半导体器件结构的改进的非晶化/模板重结晶(ATR)方法。 具有(011)表面晶体取向的直接硅键合(DSB)硅层被结合到具有(001)表面晶体取向的基底硅基板上,以形成其中面内<110>方向的DSB晶片 (011)DSB层与(001)基底的面内<110>方向对准。 DSB层的选定区域被非晶化到底部基板以形成与(001)基底基板的相互正交的平面内100°方向对准的非晶形区域,然后使用基底基板作为模板进行重结晶。 DSB层,基底和非晶区域取向的这种最佳布置提供了原始取向和改变取向硅区域之间近似垂直的,基本上无缺陷的边界,因此可以实现完整的边界区域移除,并且可以实现更小的占地面积的浅沟槽隔离 ATR方法没有如此优化。