公开(公告)号：EP1479103A4

公开(公告)日：2005-02-09

申请号：EP03731957

申请日：2003-01-16

Applicant: IBM

Inventor： BEDELL STEPHEN W ,  CHU JACK O ,  FOGEL KEITH E ,  KOESTER STEPHEN J ,  SADANA DEVENDRA K ,  OTT JOHN ALBRECHT

IPC: H01L27/08 ,  H01L21/02 ,  H01L21/20 ,  H01L21/225 ,  H01L21/324 ,  H01L21/337 ,  H01L21/762 ,  H01L27/12 ,  H01L29/786 ,  H01L21/331

CPC classification number: H01L21/76243 ,  H01L21/02378 ,  H01L21/02381 ,  H01L21/02488 ,  H01L21/02532 ,  H01L21/02612 ,  H01L21/2251 ,  H01L21/324 ,  H01L27/1203 ,  H01L29/66916 ,  Y10S438/938 ,  Y10T428/12674 ,  Y10T428/265 ,  Y10T428/31848

Abstract: A method of forming a thin, high-quality relaxed SiGe-on-insulator substrate (10) material is provided which first includes forming a SiGe or pure Ge layer on a surface of a first single crystal Si layer (14) which is present atop a barrier layer (12) that is resistant to the diffusion of Ge. Optionally forming a Si cap layer (18) over the SiGe or pure Ge layer (16), and thereafter heating the various layers at a temperature which permits interdiffusion of Ge throughtout the first single crystal Si layer (14), the optional Si cap (18) and the SiGe or pure Ge layer (16) thereby forming a substantially relaxed, single crystal SiGe layer atop the barrier layer (12). Additional SiGe regrowth and/or formation of a strained epi-Si layer may follow the above steps. SiGe-on-insulator substrate materials as well as structures including at least the SiGe-on-insulator substrate material are also disclosed herein.

Abstract translation: 提供了一种形成薄的，高品质的弛豫SiGe绝缘体上的基板材料的方法，其首先包括形成第一单晶Si层的表面上的SiGe或纯Ge层，其存在的顶上即耐阻挡层 到Ge的扩散。 OPTIONALLY形成在SiGe或纯Ge层中的Si间隙层，并随后在其允许的Ge的相互扩散在整个第一单晶Si层的温度下加热的各种层，任选的Si盖和SiGe或纯Ge层，从而形成 基本松弛，单晶SiGe层在阻挡层上。 额外的SiGe再生长和/或形成的应变外延Si层的可遵循上述步骤。 上SiGe绝缘体基板材料以及包含结构至少在SiGe绝缘体上的基板材料，因此是在盘游离缺失。

公开(公告)号：EP1800345A4

公开(公告)日：2008-11-05

申请号：EP05725566

申请日：2005-03-15

Applicant: IBM

Inventor： CHU JACK O ,  COBB MICHAEL A ,  SAUNDERS PHILIP A ,  SHI LEATHEN

IPC: H01L21/762 ,  H01L21/18 ,  H01L29/12

CPC classification number: H01L21/76254 ,  H01L21/0245 ,  H01L21/0251 ,  H01L29/1054

Abstract: A method for achieving a substantially defect free SGOI substrate which includes a SiGe layer that has a high Ge content of greater than about 25% atomic using a low temperature wafer bonding technique is described. The wafer bonding process described in the present application includes an initial prebonding annealing step that is capable of forming a bonding interface comprising elements of Si, Ge and O, i.e., interfacial SiGeO layer, between a SiGe layer and a low temperature oxide layer. The present invention also provides the SGOI substrate and structure that contains the same

公开(公告)号：EP1570511A4

公开(公告)日：2009-06-10

申请号：EP03786848

申请日：2003-11-19

Applicant: IBM

Inventor： CHRISTIANSEN SILKE H ,  CHU JACK O ,  GRILL ALFRED ,  MOONEY PATRICIA M

IPC: H01L21/20 ,  H01L21/265 ,  H01L21/762 ,  H01L21/302 ,  H01L21/461

CPC classification number: H01L21/26506 ,  H01L21/02378 ,  H01L21/02381 ,  H01L21/02532 ,  H01L21/02664 ,  H01L21/02667 ,  H01L21/02694 ,  H01L21/7624 ,  H01L21/76251 ,  Y10S438/933

Abstract: A method to obtain thin (less than 300 nm) strain-relaxed Si1-xGex buffer layers on Si or silicon-on-insulator (SOI) substrates. These buffer layers have a homogeneous distribution of misfit dislocations that relieve the strain, remarkably smooth surfaces, and a low threading dislocation (TD) density, i.e. less than 10 cm . The approach begins with the growth of a pseudomorphic or nearly pseudomorphic Si1-xGex layer, i.e., a layer that is free of misfit dislocations, which is then implanted with He or other light elements and subsequently annealed to achieve the substantial strain relaxation. The very effective strain relaxation mechanism operating with this method is dislocation nucleation at He-induced platelets (not bubbles) that lie below the Si/Si1-xGex interface, parallel to the Si(001) surface.