公开(公告)号：US08653360B2

公开(公告)日：2014-02-18

申请号：US12849966

申请日：2010-08-04

申请人： Stephen W. Bedell ,  Harold J. Hovel ,  Daniel A. Inns ,  Jee H. Kim ,  Alexander Reznicek ,  Devendra K. Sadana

发明人： Stephen W. Bedell ,  Harold J. Hovel ,  Daniel A. Inns ,  Jee H. Kim ,  Alexander Reznicek ,  Devendra K. Sadana

IPC分类号： H01L31/00 ,  H01L21/00

CPC分类号： H01L31/065 ,  H01L31/03765 ,  H01L31/075 ,  H01L31/18 ,  Y02E10/548

摘要： A photovoltaic device includes a composition modulated semiconductor structure including a p-doped first semiconductor material layer, a first intrinsic compositionally-graded semiconductor material layer, an intrinsic semiconductor material layer, a second intrinsic compositionally-graded semiconductor layer, and an n-doped first semiconductor material layer. The first and second intrinsic compositionally-graded semiconductor material layers include an alloy of a first semiconductor material having a greater band gap width and a second semiconductor material having a smaller band gap with, and the concentration of the second semiconductor material increases toward the intrinsic semiconductor material layer in the first and second compositionally-graded semiconductor material layers. The photovoltaic device provides an open circuit voltage comparable to that of the first semiconductor material, and a short circuit current comparable to that of the second semiconductor material, thereby increasing the efficiency of the photovoltaic device.

摘要翻译： 光伏器件包括组成调制的半导体结构，其包括p掺杂的第一半导体材料层，第一本征成分梯度半导体材料层，本征半导体材料层，第二本征组分梯度半导体层和n掺杂的第一半导体层 半导体材料层。 第一和第二本征成分梯度半导体材料层包括具有较大带隙宽度的第一半导体材料和具有较小带隙的第二半导体材料的合金，并且第二半导体材料的浓度朝向本征半导体 第一和第二组成梯度半导体材料层中的材料层。 光电器件提供与第一半导体材料相当的开路电压，以及与第二半导体材料相当的短路电流，从而提高光伏器件的效率。

公开(公告)号：US20130040438A1

公开(公告)日：2013-02-14

申请号：US13206248

申请日：2011-08-09

申请人： Thomas N. Adam ,  Hong He ,  Alexander Reznicek ,  Devendra K. Sadana ,  Paul D. Brabant ,  Keith Chung ,  Manabu Shinriki

发明人： Thomas N. Adam ,  Hong He ,  Alexander Reznicek ,  Devendra K. Sadana ,  Paul D. Brabant ,  Keith Chung ,  Manabu Shinriki

IPC分类号： H01L21/205 ,  H01L21/322

CPC分类号： H01L21/0237 ,  H01L21/02529 ,  H01L21/02532 ,  H01L21/0262 ,  H01L21/02658 ,  H01L21/02661

摘要： A method of depositing an epitaxial layer that includes chemically cleaning the deposition surface of a semiconductor substrate and treating the deposition surface of the semiconductor substrate with a hydrogen containing gas at a pre-bake temperature. The hydrogen containing gas treatment may be conducted in an epitaxial deposition chamber. The hydrogen containing gas removes oxygen-containing material from the deposition surface of the semiconductor substrate. The deposition surface of the semiconductor substrate may then be treated with a gas flow comprised of at least one of hydrochloric acid (HCl), germane (GeH4), and dichlorosilane (H2SiCl2) that is introduced to the epitaxial deposition chamber as temperature is decreased from the pre-bake temperature to an epitaxial deposition temperature. At least one source gas may be applied to the deposition surface for epitaxial deposition of a material layer.

摘要翻译： 一种沉积外延层的方法，包括化学清洗半导体衬底的沉积表面，并在预烘烤温度下用含氢气体处理半导体衬底的沉积表面。 含氢气体处理可以在外延沉积室中进行。 含氢气体从半导体衬底的沉积表面去除含氧材料。 然后可以用包含至少一种盐酸（HCl），锗烷（GeH4）和二氯硅烷（H 2 SiCl 2））的气流来处理半导体衬底的沉积表面，该气流随着温度从 预烘烤温度达到外延沉积温度。 可以将至少一种源气体施加到沉积表面，用于材料层的外延沉积。

公开(公告)号：US08354694B2

公开(公告)日：2013-01-15

申请号：US12855738

申请日：2010-08-13

申请人： Stephen W. Bedell ,  Jee H. Kim ,  Siegfried L. Maurer ,  Alexander Reznicek ,  Devendra K. Sadana

发明人： Stephen W. Bedell ,  Jee H. Kim ,  Siegfried L. Maurer ,  Alexander Reznicek ,  Devendra K. Sadana

IPC分类号： H01L29/66

CPC分类号： H01L21/823807 ,  H01L21/823814 ,  H01L29/7843 ,  H01L29/7848

摘要： A p-type field effect transistor (PFET) having a compressively stressed channel and an n-type field effect transistor (NFET) having a tensilely stressed channel are formed. In one embodiment, a silicon-germanium alloy is employed as a device layer, and the source and drain regions of the PFET are formed employing embedded germanium-containing regions, and source and drain regions of the NFET are formed employing embedded silicon-containing regions. In another embodiment, a germanium layer is employed as a device layer, and the source and drain regions of the PFET are formed by implanting a Group IIIA element having an atomic radius greater than the atomic radius of germanium into portions of the germanium layer, and source and drain regions of the NFET are formed employing embedded silicon-germanium alloy regions. The compressive stress and the tensile stress enhance the mobility of charge carriers in the PFET and the NFET, respectively.

摘要翻译： 形成具有压应力通道的p型场效应晶体管（PFET）和具有拉伸应力通道的n型场效应晶体管（NFET）。 在一个实施例中，使用硅 - 锗合金作为器件层，并且使用嵌入的含锗区域形成PFET的源极和漏极区域，并且使用嵌入的含硅区域形成NFET的源极和漏极区域 。 在另一个实施例中，锗层用作器件层，PFET的源极和漏极区通过将原子半径大于锗的原子半径的IIIA族元素注入到锗层的部分中而形成， 使用嵌入式硅 - 锗合金区域形成NFET的源极和漏极区域。 压应力和拉伸应力分别提高了PFET和NFET中载流子的迁移率。

公开(公告)号：US20120305940A1

公开(公告)日：2012-12-06

申请号：US13151238

申请日：2011-06-01

申请人： Thomas N. Adam ,  Stephen W. Bedell ,  Bruce B. Doris ,  Lisa F. Edge ,  Keith E. Fogel ,  Johnathan E. Faltermeier ,  Jinghong Li ,  Alexander Reznicek ,  Devendra K. Sadana ,  Bin Yang

发明人： Thomas N. Adam ,  Stephen W. Bedell ,  Bruce B. Doris ,  Lisa F. Edge ,  Keith E. Fogel ,  Johnathan E. Faltermeier ,  Jinghong Li ,  Alexander Reznicek ,  Devendra K. Sadana ,  Bin Yang

IPC分类号： H01L29/24 ,  H01L21/20

CPC分类号： H01L21/02529 ,  H01L21/02381 ,  H01L21/0243 ,  H01L21/02433 ,  H01L29/045 ,  H01L29/66636 ,  H01L29/7848 ,  H01L29/78654

摘要： A method and structure are disclosed for a defect free Si:C source/drain in an NFET device. A wafer is accepted with a primary surface of {100} crystallographic orientation. A recess is formed in the wafer in such manner that the bottom surface and the four sidewall surfaces of the recess are all having {100} crystallographic orientations. A Si:C material is eptaxially grown in the recess, and due to the crystallographic orientations the defect density next to each of the four sidewall surfaces is essentially the same as next to the bottom surface. The epitaxially filled recess is used in the source/drain fabrication of an NFET device. The NFET device is oriented along the crystallographic direction, and has the device channel under a tensile strain due to the defect free Si:C in the source/drain.

摘要翻译： 公开了在NFET器件中的无缺陷Si：C源极/漏极的方法和结构。 接受具有{100}晶体取向的主表面的晶片。 以这样的方式在晶片中形成凹部，使得凹部的底表面和四个侧壁表面都具有{100}晶体取向。 Si：C材料在凹槽中被轴向生长，并且由于晶体取向，邻近四个侧壁表面的缺陷密度基本上与下表面相同。 外延填充的凹槽用于NFET器件的源极/漏极制造。 NFET器件沿着<100>结晶方向取向，由于源极/漏极中的缺陷Si：C，器件沟道处于拉伸应变状态。

公开(公告)号：US07897444B2

公开(公告)日：2011-03-01

申请号：US12363239

申请日：2009-01-30

申请人： Thomas N. Adam ,  Stephen W. Bedell ,  Joel P. de Souza ,  Keith E. Fogel ,  Alexander Reznicek ,  Devendra K. Sadana ,  Ghavam Shahidi

发明人： Thomas N. Adam ,  Stephen W. Bedell ,  Joel P. de Souza ,  Keith E. Fogel ,  Alexander Reznicek ,  Devendra K. Sadana ,  Ghavam Shahidi

IPC分类号： H01L21/84

CPC分类号： H01L21/76243 ,  H01L29/66772 ,  H01L29/7849 ,  H01L29/78654

摘要： A strained (tensile or compressive) semiconductor-on-insulator material is provided in which a single semiconductor wafer and a separation by ion implantation of oxygen process are used. The separation by ion implantation of oxygen process, which includes oxygen ion implantation and annealing creates, a buried oxide layer within the material that is located beneath the strained semiconductor layer. In some embodiments, a graded semiconductor buffer layer is located beneath the buried oxide layer, while in other a doped semiconductor layer including Si doped with at least one of B or C is located beneath the buried oxide layer.

摘要翻译： 提供了一种应变（拉伸或压缩）半导体绝缘体材料，其中使用单个半导体晶片和通过氧气工艺的离子注入分离。 通过离子注入氧气工艺的分离，其中包括氧离子注入和退火，产生位于应变半导体层之下的材料内的掩埋氧化物层。 在一些实施例中，渐变半导体缓冲层位于掩埋氧化物层的下方，而在其它掺杂半导体层中，包含掺杂有B或C中的至少一个的掺杂半导体层位于掩埋氧化物层的下方。

公开(公告)号：US07691688B2

公开(公告)日：2010-04-06

申请号：US12143912

申请日：2008-06-23

申请人： Kevin K. Chan ,  Meikei Ieong ,  Alexander Reznicek ,  Devendra K. Sadana ,  Leathen Shi ,  Min Yang

发明人： Kevin K. Chan ,  Meikei Ieong ,  Alexander Reznicek ,  Devendra K. Sadana ,  Leathen Shi ,  Min Yang

IPC分类号： H01L21/00

CPC分类号： H01L29/7842 ,  H01L21/2022 ,  H01L21/76275 ,  H01L21/823807 ,  H01L21/84 ,  H01L27/1203 ,  H01L29/045 ,  H01L29/78687

摘要： Methods of forming a strained Si-containing hybrid substrate are provided as well as the strained Si-containing hybrid substrate formed by the methods. In the methods of the present invention, a strained Si layer is formed overlying a regrown semiconductor material, a second semiconducting layer, or both. In accordance with the present invention, the strained Si layer has the same crystallographic orientation as either the regrown semiconductor layer or the second semiconducting layer. The methods provide a hybrid substrate in which at least one of the device layers includes strained Si.

摘要翻译： 提供了形成应变含Si的杂化基板的方法以及通过这些方法形成的应变的含Si杂化基板。 在本发明的方法中，形成覆盖重新生长的半导体材料，第二半导体层或两者的应变Si层。 根据本发明，应变Si层具有与再生长半导体层或第二半导电层相同的晶体取向。 该方法提供混合基板，其中至少一个器件层包括应变Si。

公开(公告)号：US20090298258A1

公开(公告)日：2009-12-03

申请号：US12538115

申请日：2009-08-08

申请人： Joel P. de Souza ,  John A. Ott ,  Alexander Reznicek ,  Devendra K. Sadana ,  Katherine L. Saenger

发明人： Joel P. de Souza ,  John A. Ott ,  Alexander Reznicek ,  Devendra K. Sadana ,  Katherine L. Saenger

IPC分类号： H01L21/30

CPC分类号： H01L21/187 ,  H01L21/76251

摘要： The present invention provides a method for removing or reducing the thickness of ultrathin interfacial oxides remaining at Si—Si interfaces after silicon wafer bonding. In particular, the invention provides a method for removing ultrathin interfacial oxides remaining after hydrophilic Si—Si wafer bonding to create bonded Si—Si interfaces having properties comparable to those achieved with hydrophobic bonding. Interfacial oxide layers of order of about 2 to about 3 nm are dissolved away by high temperature annealing, for example, an anneal at 1300°-1330° C. for 1-5 hours. The inventive method is used to best advantage when the Si surfaces at the bonded interface have different surface orientations, for example, when a Si surface having a (100) orientation is bonded to a Si surface having a (110) orientation. In a more general aspect of the invention, the similar annealing processes may be used to remove undesired material disposed at a bonded interface of two silicon-containing semiconductor materials. The two silicon-containing semiconductor materials may be the same or different in surface crystal orientation, microstructure (single-crystal, polycrystalline, or amorphous), and composition.

摘要翻译： 本发明提供一种在硅晶片接合之后去除或减少残留在Si-Si界面处的超薄界面氧化物的厚度的方法。 特别地，本发明提供了一种去除在亲水性Si-Si晶片接合之后残留的超薄界面氧化物以产生具有与通过疏水性接合实现的性能相当的特性的结合Si-Si界面的方法。 约2至约3nm的界面氧化物层通过高温退火（例如1300°-1330℃退火1-5小时）被溶解掉。 当粘合界面处的Si表面具有不同的表面取向时，例如当具有（100）取向的Si表面被结合到具有（110）取向的Si表面时，本发明的方法被用于最好的优点。 在本发明的更一般的方面中，类似的退火工艺可用于去除设置在两个含硅半导体材料的键合界面处的不期望的材料。 两种含硅半导体材料在表面晶体取向，微结构（单晶，多晶或无定形）和组成上可以相同或不同。

公开(公告)号：US07592671B2

公开(公告)日：2009-09-22

申请号：US11620663

申请日：2007-01-06

申请人： Thomas N. Adam ,  Stephen W. Bedell ,  Joel P. de Souza ,  Keith E. Fogel ,  Alexander Reznicek ,  Devendra K. Sadana ,  Ghavam Shahidi

发明人： Thomas N. Adam ,  Stephen W. Bedell ,  Joel P. de Souza ,  Keith E. Fogel ,  Alexander Reznicek ,  Devendra K. Sadana ,  Ghavam Shahidi

IPC分类号： H01L29/94

CPC分类号： H01L21/76259 ,  Y10S438/967

摘要： A cost efficient and manufacturable method of fabricating strained semiconductor-on-insulator (SSOI) substrates is provided that avoids wafer bonding. The method includes growing various epitaxial semiconductor layers on a substrate, wherein at least one of the semiconductor layers is a doped and relaxed semiconductor layer underneath a strained semiconductor layer; converting the doped and relaxed semiconductor layer into a porous semiconductor via an electrolytic anodization process, and oxidizing to convert the porous semiconductor layer into a buried oxide layer. The method provides a SSOI substrate that includes a relaxed semiconductor layer on a substrate; a high-quality buried oxide layer on the relaxed semiconductor layer; and a strained semiconductor layer on the high-quality buried oxide layer. In accordance with the present invention, the relaxed semiconductor layer and the strained semiconductor layer have identical crystallographic orientations.

摘要翻译： 提供了制造应变半导体绝缘体（SSOI）衬底的成本有效和可制造的方法，其避免晶片接合。 该方法包括在衬底上生长各种外延半导体层，其中半导体层中的至少一个是在应变半导体层下面的掺杂和弛豫半导体层; 通过电解阳极氧化处理将掺杂和松弛的半导体层转化成多孔半导体，并氧化以将多孔半导体层转化为掩埋氧化物层。 该方法提供了在衬底上包括松弛半导体层的SSOI衬底; 在松弛的半导体层上形成高质量的掩埋氧化物层; 以及在高质量掩埋氧化物层上的应变半导体层。 根据本发明，松弛半导体层和应变半导体层具有相同的晶体取向。

公开(公告)号：US20090117720A1

公开(公告)日：2009-05-07

申请号：US11934479

申请日：2007-11-02

申请人： Stephen W. Bedell ,  Joel P. de Souza ,  Alexander Reznicek ,  Devendra K. Sadana

发明人： Stephen W. Bedell ,  Joel P. de Souza ,  Alexander Reznicek ,  Devendra K. Sadana

IPC分类号： H01L21/36

CPC分类号： H01L21/76245 ,  H01L21/02126 ,  H01L21/022 ,  H01L21/02203 ,  H01L21/02236 ,  H01L21/02238 ,  H01L21/02258 ,  H01L21/02337 ,  H01L21/3167

摘要： A method of fabricating a strained semiconductor-on-insulator (SSOI) substrate is provided. The method includes first providing a structure that includes a substrate, a doped and relaxed semiconductor layer on the substrate, and a strained semiconductor layer on the doped and relaxed semiconductor layer. In the invention, the doped and relaxed semiconductor layer having a lower lattice parameter than the substrate. Next, at least the doped and relaxed semiconductor layer is converted into a buried porous layer and the structure including the buried porous layer is annealed to provide a strained semiconductor-on-insulator substrate. During the annealing, the buried porous layer is converted into a buried oxide layer.

摘要翻译： 提供了制造应变半导体绝缘体（SSOI）衬底的方法。 该方法包括首先提供包括衬底，衬底上的掺杂和弛豫半导体层以及掺杂和弛豫半导体层上的应变半导体层的结构。 在本发明中，掺杂和松弛的半导体层具有比衬底更低的晶格参数。 接下来，至少将掺杂和松弛的半导体层转换成掩埋多孔层，并且将包括埋入多孔层的结构退火以提供应变绝缘体上半导体衬底。 在退火过程中，将埋入的多孔层转化为掩埋氧化物层。

公开(公告)号：US07402466B2

公开(公告)日：2008-07-22

申请号：US11492271

申请日：2006-07-25

申请人： Kevin K. Chan ,  Meikei Ieong ,  Alexander Reznicek ,  Devendra K. Sadana ,  Leathen Shi ,  Min Yang

发明人： Kevin K. Chan ,  Meikei Ieong ,  Alexander Reznicek ,  Devendra K. Sadana ,  Leathen Shi ,  Min Yang

IPC分类号： H01L21/00

CPC分类号： H01L29/7842 ,  H01L21/2022 ,  H01L21/76275 ,  H01L21/823807 ,  H01L21/84 ,  H01L27/1203 ,  H01L29/045 ,  H01L29/78687

摘要： Methods of forming a strained Si-containing hybrid substrate are provided as well as the strained Si-containing hybrid substrate formed by the methods. In the methods of the present invention, a strained Si layer is formed overlying a regrown semiconductor material, a second semiconducting layer, or both. In accordance with the present invention, the strained Si layer has the same crystallographic orientation as either the regrown semiconductor layer or the second semiconducting layer. The methods provide a hybrid substrate in which at least one of the device layers includes strained Si.

摘要翻译： 提供了形成应变含Si的杂化基板的方法以及通过这些方法形成的应变的含Si杂化基板。 在本发明的方法中，形成覆盖重新生长的半导体材料，第二半导体层或两者的应变Si层。 根据本发明，应变Si层具有与再生长半导体层或第二半导电层相同的晶体取向。 该方法提供混合基板，其中至少一个器件层包括应变Si。