公开(公告)号：US20070290288A1

公开(公告)日：2007-12-20

申请号：US11894938

申请日：2007-08-22

申请人： Sheng Hsu ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet

发明人： Sheng Hsu ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet

IPC分类号： H01L31/10

CPC分类号： H01L31/1136

摘要： A floating body germanium (Ge) phototransistor with a photo absorption threshold bias region, and an associated fabrication process are presented. The method includes: providing a p-doped Silicon (Si) substrate; selectively forming an insulator layer overlying a first surface of the Si substrate; forming an epitaxial Ge layer overlying the insulator layer; forming a channel region in the Ge layer; forming a gate dielectric, gate electrode, and gate spacers; forming source/drain (S/D) regions in the Ge layer; and, forming a photo absorption threshold bias region in the Ge layer, adjacent the channel region. In one aspect, the second S/D region has a length, longer than the first S/D length. The photo absorption threshold bias region underlies the second S/D region. Alternately, the second S/D region is separated from the channel by an offset, and the photo absorption threshold bias region is the offset in the Ge layer, after a light p-doping.

摘要翻译： 提出了具有光吸收阈值偏置区域的浮体锗（Ge）光电晶体管，以及相关的制造工艺。 该方法包括：提供p掺杂硅（Si）衬底; 选择性地形成覆盖在所述Si衬底的第一表面上的绝缘体层; 形成覆盖绝缘体层的外延Ge层; 在Ge层中形成沟道区; 形成栅极电介质，栅电极和栅极间隔物; 在Ge层中形成源极/漏极（S / D）区域; 并且在Ge层中形成邻近沟道区的光吸收阈值偏置区域。 在一个方面，第二S / D区域具有比第一S / D长度更长的长度。 光吸收阈值偏置区域位于第二S / D区域的下方。 或者，第二S / D区域与沟道分离偏移，光吸收阈值偏置区域是在光p掺杂之后的Ge层中的偏移。

公开(公告)号：US20060281232A1

公开(公告)日：2006-12-14

申请号：US11149891

申请日：2005-06-10

申请人： Sheng Hsu ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet

发明人： Sheng Hsu ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet

IPC分类号： H01L21/84

CPC分类号： H01L21/8221 ,  H01L21/84 ,  H01L27/0688 ,  H01L27/1203 ,  H01L29/78684

摘要： A method of fabricating a silicon-germanium CMOS includes preparing a silicon substrate wafer; depositing an insulating layer on the silicon substrate wafer; patterning and etching the insulating layer; depositing a layer of polycrystalline germanium on the insulating layer and on at least a portion of the silicon substrate wafer; patterning and etching the polycrystalline germanium; encapsulating the polycrystalline germanium with an insulating material; rapidly thermally annealing the wafer at a temperature sufficient to melt the polycrystalline germanium; cooling the wafer to promote liquid phase epitaxy of the polycrystalline germanium, thereby forming a single crystal germanium layer; and completing the CMOS device.

摘要翻译： 制造硅 - 锗CMOS的方法包括制备硅衬底晶片; 在硅衬底晶片上沉积绝缘层; 图案化和蚀刻绝缘层; 在所述绝缘层和所述硅衬底晶片的至少一部分上沉积多晶锗层; 图案化和蚀刻多晶锗; 用绝缘材料封装多晶锗; 在足以熔化多晶锗的温度下快速热退火晶片; 冷却晶片以促进多晶锗的液相外延，从而形成单晶锗层; 并完成CMOS设备。

公开(公告)号：US20060194415A1

公开(公告)日：2006-08-31

申请号：US11069422

申请日：2005-02-28

申请人： Jong-Jan Lee ,  Jer-Shen Maa ,  Sheng Hsu ,  Douglas Tweet

发明人： Jong-Jan Lee ,  Jer-Shen Maa ,  Sheng Hsu ,  Douglas Tweet

IPC分类号： H01L21/30 ,  H01L21/46

CPC分类号： H01L27/14634 ,  H01L27/14649 ,  H01L27/14689 ,  H01L27/1469 ,  H01L31/028 ,  H01L31/103 ,  H01L31/1804 ,  H01L31/1808 ,  H01L31/1864 ,  Y02E10/547 ,  Y02P70/521

摘要： A method of fabricating a germanium infrared sensor for a CMOS imager includes preparation a donor wafer, including: ion implantation into a silicon wafer to form a P+ silicon layer; growing an epitaxial germanium layer on the P+ silicon layer, forming a silicon-germanium interface; cyclic annealing; and implanting hydrogen ions to a depth at least as deep as the P+ silicon layer to form a defect layer; preparing a handling wafer, including: fabricating a CMOS integrated circuit on a silicon substrate; depositing a layer of refractory metal; treating the surfaces of the donor wafer and the handling wafer for bonding; bonding the handling wafer and the donor wafer to form a bonded structure; splitting the bonded structure along the defect layer; depositing a layer of indium tin oxide on the germanium layer; completing the IR sensor.

摘要翻译： 制造用于CMOS成像器的锗红外传感器的方法包括制备施主晶片，其包括：离子注入到硅晶片中以形成P +硅层; 在P +硅层上生长外延锗层，形成硅 - 锗界面; 循环退火; 以及将氢离子注入至少与P +硅层一样深的深度以形成缺陷层; 制备处理晶片，包括：在硅衬底上制造CMOS集成电路; 沉积难熔金属层; 处理供体晶片的表面和用于结合的处理晶片; 结合处理晶片和施主晶片以形成结合结构; 沿着缺陷层分离粘结结构; 在锗层上沉积一层氧化铟锡; 完成IR传感器。

公开(公告)号：US20050070115A1

公开(公告)日：2005-03-31

申请号：US10677005

申请日：2003-09-30

申请人： Jer-Shen Maa ,  Jong-Jan Lee ,  Douglas Tweet ,  Sheng Hsu

发明人： Jer-Shen Maa ,  Jong-Jan Lee ,  Douglas Tweet ,  Sheng Hsu

IPC分类号： H01L21/20 ,  H01L21/302 ,  H01L21/461 ,  H01L21/762

CPC分类号： H01L21/76254

摘要： A method of forming a silicon-germanium layer on an insulator includes depositing a layer of silicon-germanium on a silicon substrate to form a silicon/silicon-germanium portion; implanting hydrogen ions into the silicon substrate between about 500 Å to 1 μm below a silicon-germanium/silicon interface; bonding the silicon/silicon-germanium portion to an insulator substrate to form a couplet; thermally annealing the couplet in a first thermal annealing step to split the couplet; patterning and etching the silicon-germanium-on-insulator portion to remove portions of the silicon and SiGe layers; etching the silicon-germanium-on-insulator portion to remove the remaining silicon layer; thermally annealing the silicon-germanium-on-insulator portion in a second annealing step to relaxed the SiGe layer; and depositing a layer of strained silicon about the SiGe layer.

摘要翻译： 在绝缘体上形成硅 - 锗层的方法包括在硅衬底上沉积硅 - 锗层以形成硅/硅 - 锗部分; 在硅 - 锗/硅界面之下的约500埃至1微米处将氢离子注入到硅衬底中; 将硅/硅锗部分接合到绝缘体基板上以形成对联体; 在第一热退火步骤中对联接件进行热退火以分离联接件; 图案化和蚀刻绝缘体上硅部分以去除部分硅和SiGe层; 蚀刻绝缘体上硅部分以除去剩余的硅层; 在第二退火步骤中对绝缘体上硅部分进行热退火以松弛SiGe层; 以及在SiGe层周围沉积一层应变硅。

公开(公告)号：US20070170536A1

公开(公告)日：2007-07-26

申请号：US11339011

申请日：2006-01-25

申请人： Sheng Hsu ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet

发明人： Sheng Hsu ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet

IPC分类号： H01L31/00

CPC分类号： H01L31/1055 ,  H01L31/1808 ,  H01L31/1872 ,  Y02E10/50

摘要： A device and associated method are provided for fabricating a liquid phase epitaxial (LPE) Germanium-on-Insulator (GOI) photodiode with buried high resistivity Germanium (Ge) layer. The method provides a silicon (Si) substrate, and forms a bottom insulator overlying the Si substrate with a Si seed access area. Then, a Ge P-I-N diode is formed with an n +-doped (n+) mesa, a p+-doped (p+) Ge bottom insulator interface and mesa lateral interface, and a high resistivity Ge layer interposed between the p+ Ge and n+ Ge. A metal electrode is formed overlying a region of the p+ Ge lateral interface, and a transparent electrode is formed overlying the n+ Ge mesa. In one aspect, the method deposits a silicon nitride layer temporary cap overlying the high resistivity Ge layer, and an annealing is performed to epitaxially crystallize the Ge bottom interface and high resistivity Ge layer.

摘要翻译： 提供了一种用于制造具有埋置的高电阻率锗（Ge）层的液相外延（LPE）绝缘体锗绝缘体（GOI）光电二极管的器件和相关方法。 该方法提供硅（Si）衬底，并且形成具有Si种子存取区域的覆盖Si衬底的底部绝缘体。 然后，形成具有n +掺杂（n +）台面，p +掺杂（p +）Ge底部绝缘体界面和台面侧面界面的Ge P-I-N二极管，以及插入在p + Ge和n + Ge之间的高电阻率Ge层。 在p + Ge侧面界面的区域上形成金属电极，形成覆盖n + Ge台面的透明电极。 在一个方面，该方法沉积覆盖高电阻率Ge层的氮化硅层临时盖，并进行退火以使Ge底界面和高电阻率Ge层外延结晶。

公开(公告)号：US20070141744A1

公开(公告)日：2007-06-21

申请号：US11312967

申请日：2005-12-19

申请人： Jong-Jan Lee ,  Douglas Tweet ,  Jer-Shen Maa ,  Sheng Hsu

发明人： Jong-Jan Lee ,  Douglas Tweet ,  Jer-Shen Maa ,  Sheng Hsu

IPC分类号： H01L21/00

CPC分类号： H01L31/105 ,  H01L31/1808 ,  H01L31/1864 ,  Y02E10/50 ,  Y02P70/521 ,  Y10S438/933

摘要： A method of fabricating a low, dark-current germanium-on-silicon PIN photo detector includes preparing a P-type silicon wafer; implanting the P-type silicon wafer with boron ions; activating the boron ions to form a P+ region on the silicon wafer; forming a boron-doped germanium layer on the P+ silicon surface; depositing an intrinsic germanium layer on the born-doped germanium layer; cyclic annealing, including a relatively high temperature first anneal step and a relatively low temperature second anneal step; repeating the first and second anneal steps for about twenty cycles, thereby forcing crystal defects to the P+ germanium layer; implanting ions in the surface of germanium layer to form an N+ germanium surface layer and a PIN diode; activating the N+ germanium surface layer by thermal anneal; and completing device according to known techniques to form a low dark-current germanium-on-silicon PIN photodetector.

摘要翻译： 制造低，暗电流锗硅PIN光检测器的方法包括制备P型硅晶片; 用硼离子注入P型硅晶片; 激活硼离子以在硅晶片上形成P +区; 在P +硅表面上形成硼掺杂锗层; 在天然掺杂锗层上沉积本征锗层; 循环退火，包括相对高温的第一退火步骤和相对低温的第二退火步骤; 重复第一和第二退火步骤约20个循环，由此迫使晶体缺陷到P +锗层; 在锗层表面注入离子以形成N +锗表面层和PIN二极管; 通过热退火激活N +锗表面层; 并根据已知技术完成器件以形成低暗电流锗硅PIN光电探测器。

公开(公告)号：US20070001163A1

公开(公告)日：2007-01-04

申请号：US11174035

申请日：2005-07-01

申请人： Jong-Jan Lee ,  Sheng Hsu ,  Jer-Shen Maa ,  Douglas Tweet

发明人： Jong-Jan Lee ,  Sheng Hsu ,  Jer-Shen Maa ,  Douglas Tweet

IPC分类号： H01L31/00

CPC分类号： H01L31/1136 ,  H01L31/028 ,  H01L31/1808 ,  Y02E10/547

摘要： A floating body germanium (Ge) phototransistor and associated fabrication process are presented. The method includes: providing a silicon (Si) substrate; selectively forming an insulator layer overlying the Si substrate; forming an epitaxial Ge layer overlying the insulator layer using a liquid phase epitaxy (LPE) process; forming a channel region in the Ge layer; forming a gate dielectric, gate electrode, and gate spacers overlying the channel region; and, forming source/drain regions in the Ge layer. The LPE process involves encapsulating the Ge with materials having a melting temperature greater than a first temperature, and melting the Ge using a temperature lower than the first temperature. The LPE process includes: forming a dielectric layer overlying deposited Ge; melting the Ge; and, in response to cooling the Ge, laterally propagating an epitaxial growth front into the Ge from an underlying Si substrate surface.

摘要翻译： 提出了一种浮体锗（Ge）光电晶体管及其制造工艺。 该方法包括：提供硅（Si）衬底; 选择性地形成覆盖Si衬底的绝缘体层; 使用液相外延（LPE）工艺形成覆盖绝缘体层的外延Ge层; 在Ge层中形成沟道区; 形成覆盖所述沟道区的栅极电介质，栅电极和栅极间隔; 并且在Ge层中形成源/漏区。 LPE工艺包括用具有大于第一温度的熔化温度的材料包封Ge，并且使用低于第一温度的温度来熔化Ge。 LPE工艺包括：形成覆盖沉积Ge的介电层; 融化Ge; 并且响应于冷却Ge，将外延生长前沿从下面的Si衬底表面横向传播到Ge中。

公开(公告)号：US20060189151A1

公开(公告)日：2006-08-24

申请号：US11384121

申请日：2006-03-17

申请人： Douglas Tweet ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Sheng Hsu

发明人： Douglas Tweet ,  Jong-Jan Lee ,  Jer-Shen Maa ,  Sheng Hsu

IPC分类号： H01L21/31 ,  H01L21/469

CPC分类号： H01L31/035281 ,  H01L21/02381 ,  H01L21/02532 ,  H01L21/02639 ,  H01L21/0265 ,  H01L31/101 ,  H01L31/1812 ,  Y02E10/50

摘要： Provided are a SiGe vertical optical path and a method for selectively forming a SiGe optical path normal structure for IR photodetection. The method comprises: forming a Si substrate surface; forming a Si feature, normal with respect to the Si substrate surface, such as a trench, via, or pillar; and, selectively forming a SiGe optical path overlying the Si normal feature. In some aspects, the Si substrate surface is formed a first plane and the Si normal feature has walls (sidewalls), normal with respect to the Si substrate surface, and a surface in a second plane, parallel to the first plane. Then, selectively forming a SiGe optical path overlying the Si normal feature includes forming a SiGe vertical optical path overlying the normal feature walls.

摘要翻译： 提供了SiGe垂直光路和用于选择性地形成用于IR光电检测的SiGe光路法线结构的方法。 该方法包括：形成Si衬底表面; 形成Si特征，相对于诸如沟槽，通孔或支柱的Si衬底表面是正常的; 并且选择性地形成覆盖Si正常特征的SiGe光路。 在一些方面，Si衬底表面形成第一平面，并且Si正常特征具有相对于Si衬底表面法线的壁（侧壁）和平行于第一平面的第二平面中的表面。 然后，选择性地形成覆盖Si正常特征的SiGe光路包括形成覆盖正常特征壁的SiGe垂直光路。

公开(公告)号：US20060189111A1

公开(公告)日：2006-08-24

申请号：US11060878

申请日：2005-02-18

申请人： Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet ,  Yoshi Ono ,  Sheng Hsu

发明人： Jong-Jan Lee ,  Jer-Shen Maa ,  Douglas Tweet ,  Yoshi Ono ,  Sheng Hsu

IPC分类号： H01L21/44

CPC分类号： H01L27/127 ,  H01L27/1214 ,  H01L27/1266 ,  H01L29/7842 ,  H01L29/78621

摘要： A method of making CMOS devices on strained silicon on glass includes preparing a glass substrate, including forming a strained silicon layer on the glass substrate; forming a silicon oxide layer by plasma oxidation of the strained silicon layer; depositing a layer of doped polysilicon on the silicon oxide layer; forming a polysilicon gate; implanting ions to form a LDD structure; depositing and forming a spacer dielectric on the gate structure; implanting and activation ions to form source and drain structures; depositing a layer of metal film; annealing the layer of metal film to form salicide on the source, drain and gate structures; removing any unreacted metal film; depositing a layer of interlayer dielectric; and forming contact holes and metallizing.

摘要翻译： 在玻璃上的应变硅上制造CMOS器件的方法包括制备玻璃衬底，包括在玻璃衬底上形成应变硅层; 通过应变硅层的等离子体氧化形成氧化硅层; 在氧化硅层上沉积掺杂多晶硅层; 形成多晶硅栅极; 注入离子以形成LDD结构; 在栅极结构上沉积和形成间隔电介质; 植入和激活离子以形成源和漏结构; 沉积一层金属膜; 退火金属膜层，在源极，漏极和栅极结构上形成硅化物; 去除任何未反应的金属膜; 沉积层间电介质层; 并形成接触孔和金属化。

公开(公告)号：US20070218578A1

公开(公告)日：2007-09-20

申请号：US11384110

申请日：2006-03-17

申请人： Jong-Jan Lee ,  Sheng Hsu ,  Douglas Tweet ,  Jer-Shen Maa

发明人： Jong-Jan Lee ,  Sheng Hsu ,  Douglas Tweet ,  Jer-Shen Maa

IPC分类号： H01L21/00

CPC分类号： H01L27/14647

摘要： A CMOS active pixel sensor includes a silicon-on-insulator substrate having a silicon substrate with an insulator layer formed thereon and a top silicon layer formed on the insulator layer. A stacked pixel sensor cell includes a bottom photodiode fabricated on the silicon substrate, for sensing light of a longest wavelength; a middle photodiode fabricated on the silicon substrate, for sensing light of a medium wavelength, which is stacked above the bottom photodiode; and a top photodiode fabricated on the top silicon layer, for sensing light of a shorter wavelength, which is stacked above the middle and bottom photodiodes. Pixel transistor sets are fabricated on the top silicon layer and are associated with each pixel sensor cell by electrical connections which extend between each of the photodiodes and respective pixel transistor(s). CMOS control circuitry is fabricated adjacent to an array of active pixel sensor cells and electrically connected thereto.

摘要翻译： CMOS有源像素传感器包括具有在其上形成有绝缘体层的硅衬底和形成在绝缘体层上的顶部硅层的绝缘体上硅衬底。 层叠像素传感器单元包括：制造在硅衬底上的底部光电二极管，用于感测最长波长的光; 制造在硅衬底上的中间光电二极管，用于感测中等波长的光; 和制造在顶部硅层上的顶部光电二极管，用于感测较短波长的光，该光被层叠在中间和底部光电二极管的上方。 像素晶体管组被制造在顶部硅层上，并且通过在每个光电二极管和相应的像素晶体管之间延伸的电连接与每个像素传感器单元相关联。 CMOS控制电路与有源像素传感器单元的阵列相邻并且与其电连接。