公开(公告)号：US08492774B2

公开(公告)日：2013-07-23

申请号：US13033767

申请日：2011-02-24

申请人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Ryo Hattori

发明人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Ryo Hattori

IPC分类号： H01L29/15

CPC分类号： C30B29/36 ,  C30B19/02 ,  C30B19/04 ,  C30B19/10 ,  Y10T117/1024

摘要： A manufacturing method for a SiC single crystal film which allows stable growth of a SiC epitaxial film with a low doping concentration on a substrate with a diameter of at least 2 inches by the LPE method using a SiC solution in solvent of a melt includes an evacuation step in which the interior of a crystal growth furnace is evacuated with heating until the vacuum pressure at the crystal growth temperature is 5×10−3 Pa or lower prior to introducing a raw material for the melt into the furnace. Then, a crucible containing a raw material for the melt is introduced into the furnace, a SiC solution is formed, and a SiC epitaxial film is grown on a substrate immersed in the solution.

摘要翻译： 一种SiC单晶膜的制造方法，其通过LPE法在熔体溶剂中使用SiC溶液，使具有低掺杂浓度的SiC外延膜在直径至少为2英寸的基板上稳定地生长，其包括抽真空 在将熔体原料引入炉内之前，将晶体生长炉的内部加热抽真空直到晶体生长温度下的真空压力为5×10 -3 Pa以下的步骤。 然后，将含有熔体原料的坩埚引入炉内，形成SiC溶液，在沉积在溶液中的基板上生长SiC外延膜。

公开(公告)号：US09222198B2

公开(公告)日：2015-12-29

申请号：US13385566

申请日：2012-02-27

申请人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Junichi Koike

发明人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Junichi Koike

IPC分类号： C30B19/02 ,  H01L21/02 ,  H01L21/16 ,  C30B29/36 ,  C30B19/04 ,  C30B19/06

CPC分类号： C30B29/36 ,  C30B19/02 ,  C30B19/04 ,  C30B19/062 ,  Y10T428/21 ,  Y10T428/265

摘要： A SiC single crystal wafer on which a good quality epitaxial film by suppressing defects derived from the wafer can be grown has an affected surface layer with a thickness of at most 50 nm and a SiC single crystal portion with an oxygen content of at most 1.0×1017 atoms/cm3. This SiC single crystal wafer is manufactured from a high purity SiC bulk single crystal obtained by the solution growth method using raw materials with an oxygen content of at most 100 ppm and a non-oxidizing atmosphere having an oxygen concentration of at most 100 ppm.

摘要翻译： 通过抑制从晶片产生的缺陷可以生长出其质量良好的外延膜的SiC单晶晶片具有厚度至多为50nm的受影响的表面层和氧含量至多为1.0×x的SiC单晶部分 1017原子/ cm3。 该SiC单晶晶片由使用氧含量为100ppm以下的原料和氧浓度为100ppm以下的非氧化性气氛的溶液生长法得到的高纯度SiC体单晶制造。

公开(公告)号：US08388752B2

公开(公告)日：2013-03-05

申请号：US13036101

申请日：2011-02-28

申请人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Akihiro Yauchi ,  Shinji Shimosaki

发明人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Akihiro Yauchi ,  Shinji Shimosaki

IPC分类号： C30B9/00

CPC分类号： C30B19/04 ,  C30B9/10 ,  C30B19/02 ,  C30B19/10 ,  C30B29/36

摘要： A method capable of stably manufacturing a SiC single crystal in the form of a thin film or a bulk crystal having a low carrier density of at most 5×1017/cm3 and preferably less than 1×1017/cm3 and which is suitable for use in various devices by liquid phase growth using a SiC solution in which the solvent is a melt of a Si alloy employs a Si alloy having a composition which is expressed by SixCryTiz wherein x, y, and z (each in atomic percent) satisfy 0.50

摘要翻译： 一种能够稳定地制造低载体密度至多为5×1017 / cm3，优选小于1×1017 / cm3的薄膜或本体晶体形式的SiC单晶的方法，其适用于 使用其中溶剂是Si合金的熔体的SiC溶液的液相生长的各种装置采用具有由SixCryTiz表示的组成的Si合金，其中x，y和z（以原子百分比计）满足0.50

公开(公告)号：US09702056B2

公开(公告)日：2017-07-11

申请号：US14126942

申请日：2012-06-11

申请人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Hironori Daikoku ,  Motohisa Kado ,  Hidemitsu Sakamoto

发明人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Hironori Daikoku ,  Motohisa Kado ,  Hidemitsu Sakamoto

IPC分类号： C30B15/10 ,  C30B35/00 ,  C30B19/02 ,  C30B29/36 ,  C30B17/00 ,  C30B19/08

CPC分类号： C30B15/10 ,  C30B17/00 ,  C30B19/02 ,  C30B19/08 ,  C30B29/36 ,  C30B35/00 ,  Y10T117/1032

摘要： A region of an SiC solution in the vicinity of an SiC seed crystal is cooled while suppressing the temperature variation in a peripheral region of the SiC solution. An apparatus includes a seed shaft and a crucible for an SiC solution. The seed shaft has a lower end surface for attachment to an SiC seed crystal. The crucible comprises a main body, an intermediate cover, and a top cover. The main body includes a first cylindrical portion and a bottom portion at a lower end portion of the first cylindrical portion. The intermediate cover is within the first cylindrical portion and above the liquid level of the SiC solution in the main body. The intermediate cover has a first through hole for the seed shaft. The top cover is disposed above the intermediate cover and has a second through hole for the seed shaft to pass through.

公开(公告)号：US09512540B2

公开(公告)日：2016-12-06

申请号：US13883350

申请日：2011-11-04

申请人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Kouji Moriguchi ,  Nobuhiro Okada ,  Katsunori Danno ,  Hironori Daikoku

发明人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Kouji Moriguchi ,  Nobuhiro Okada ,  Katsunori Danno ,  Hironori Daikoku

IPC分类号： C30B15/20 ,  C30B17/00 ,  C30B19/02 ,  C30B29/36 ,  C30B15/10 ,  C30B15/30 ,  C30B15/36

CPC分类号： C30B15/20 ,  C30B15/10 ,  C30B15/30 ,  C30B15/36 ,  C30B17/00 ,  C30B19/02 ,  C30B29/36

摘要： A method for manufacturing an n-type SiC single crystal, enables the suppression of the variation in nitrogen concentration among a plurality of n-type SiC single crystal ingots manufactured. A method includes the steps of: providing a manufacturing apparatus (100) including a chamber (1) having an area in which a crucible (7) is to be disposed; heating the area in which the crucible (7) is to be disposed and evacuating the gas in the chamber (1); filling, after the evacuation, the chamber (1) with a mixed gas containing a noble gas and nitrogen gas; heating and melting a starting material housed in the crucible (7) disposed in the area to produce a SiC solution (8) containing silicon and carbon; and immersing a SiC seed crystal into the SiC solution under the mixed gas atmosphere to grow an n-type SiC single crystal on the SiC seed crystal.

摘要翻译： 制造n型SiC单晶的方法能够抑制制造的多个n型SiC单晶锭中的氮浓度的变化。 一种方法包括以下步骤：提供一种制造装置（100），该制造装置（100）包括具有坩埚（7）将被设置的区域的腔室（1） 加热要安置坩埚（7）的区域并抽空腔室（1）中的气体; 在排气之后用包含惰性气体和氮气的混合气体填充室（1）; 加热和熔化容纳在所述区域中的坩埚（7）中的原料以产生含有硅和碳的SiC溶液（8）; 并在混合气体气氛下将SiC晶种浸入SiC溶液中，以在SiC晶种上生长n型SiC单晶。

公开(公告)号：US09388508B2

公开(公告)日：2016-07-12

申请号：US13997766

申请日：2011-12-26

申请人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Motohisa Kado ,  Hidemitsu Sakamoto ,  Hironori Daikoku

发明人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Motohisa Kado ,  Hidemitsu Sakamoto ,  Hironori Daikoku

IPC分类号： C30B11/04 ,  C30B15/32 ,  C30B19/06 ,  C30B29/36

CPC分类号： C30B15/32 ,  C30B19/06 ,  C30B29/36 ,  Y10T117/1032 ,  Y10T117/1072

摘要： A manufacturing apparatus of a SiC single crystal which can suppress the generation of a polycrystal is provided. A jig (41) and a crucible (6) are accommodated in a chamber (1). A SiC solution (8) is housed in the crucible (6). The jig (41) includes a seed shaft (411) and a cover member (412). The seed shaft (411) can move up and down, and a SiC seed crystal (9) is attached to the lower surface thereof. The cover member (412) is attached to the lower end portion of the seed shaft (411). The cover member (412) is a housing which has an opening at its lower end, wherein the lower end portion of the seed shaft (411) is disposed in the cover member (412).

摘要翻译： 提供了可以抑制多晶体的产生的SiC单晶的制造装置。 夹具（41）和坩埚（6）容纳在腔室（1）中。 将SiC溶液（8）容纳在坩埚（6）中。 夹具（41）包括种子轴（411）和盖构件（412）。 种子轴（411）可以上下移动，并且其SiC晶种（9）附着到其下表面。 盖构件（412）附接到种子轴（411）的下端部。 盖构件（412）是在其下端具有开口的壳体，其中种子轴（411）的下端部设置在盖构件（412）中。

公开(公告)号：US20130305981A1

公开(公告)日：2013-11-21

申请号：US13997766

申请日：2011-12-26

申请人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Motohisa Kado ,  Hidemitsu Sakamoto ,  Hironori Daikoku

发明人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Motohisa Kado ,  Hidemitsu Sakamoto ,  Hironori Daikoku

IPC分类号： C30B15/32

CPC分类号： C30B15/32 ,  C30B19/06 ,  C30B29/36 ,  Y10T117/1032 ,  Y10T117/1072

摘要： A manufacturing apparatus of a SiC single crystal which can suppress the generation of a polycrystal is provided. A jig (41) and a crucible (6) are accommodated in a chamber (1). A SiC solution (8) is housed in the crucible (6). The jig (41) includes a seed shaft (411) and a cover member (412). The seed shaft (411) can move up and down, and a SiC seed crystal (9) is attached to the lower surface thereof. The cover member (412) is attached to the lower end portion of the seed shaft (411). The cover member (412) is a housing which has an opening at its lower end, wherein the lower end portion of the seed shaft (411) is disposed in the cover member (412).

摘要翻译： 提供了可以抑制多晶体的产生的SiC单晶的制造装置。 夹具（41）和坩埚（6）容纳在腔室（1）中。 将SiC溶液（8）容纳在坩埚（6）中。 夹具（41）包括种子轴（411）和盖构件（412）。 种子轴（411）可以上下移动，并且其SiC晶种（9）附着到其下表面。 盖构件（412）附接到种子轴（411）的下端部。 盖构件（412）是在其下端具有开口的壳体，其中种子轴（411）的下端部设置在盖构件（412）中。

公开(公告)号：US07635413B2

公开(公告)日：2009-12-22

申请号：US11712841

申请日：2007-03-01

申请人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Akihiro Yauchi ,  Yoshihisa Ueda ,  Yutaka Itoh ,  Nobuhiro Okada

发明人： Kazuhiko Kusunoki ,  Kazuhito Kamei ,  Nobuyoshi Yashiro ,  Akihiro Yauchi ,  Yoshihisa Ueda ,  Yutaka Itoh ,  Nobuhiro Okada

IPC分类号： C30B23/00 ,  C30B28/12

CPC分类号： C30B9/06 ,  C30B9/10 ,  C30B15/305 ,  C30B17/00 ,  C30B19/02 ,  C30B19/04 ,  C30B29/36 ,  Y10T117/10 ,  Y10T117/1004 ,  Y10T117/1008 ,  Y10T117/1016 ,  Y10T117/1072

摘要： A SiC single crystal is produced by the solution growth method in which a seed crystal attached to a seed shaft is immersed in a solution of SiC dissolved in a melt of Si or a Si alloy and a SiC single crystal is allowed to grow on the seed crystal by gradually cooling the solution or by providing a temperature gradient therein. To this method, accelerated rotation of a crucible is applied by repeatedly accelerating to a prescribed rotational speed and holding at that speed and decelerating to a lower rotational speed or a 0 rotational speed. The rotational direction of the crucible may be reversed each acceleration. The seed shaft may also be rotated synchronously with the rotation of the crucible in the same or opposite rotational as the crucible. A large, good quality single crystal having no inclusions are produced with a high crystal growth rate.

摘要翻译： 通过溶液生长法生产SiC单晶，其中将种子轴附着的晶种浸入溶解在Si或Si合金熔体中的SiC溶液中，使SiC单晶在种子上生长 通过逐渐冷却溶液或通过在其中提供温度梯度来制备。 对于这种方法，通过反复加速到规定的转速并以该速度保持并减速到较低的转速或0转速来施加坩埚的加速旋转。 坩埚的旋转方向可以反转每个加速度。 种子轴也可以与坩埚的旋转同步旋转，与坩埚相同或相反。 以高的晶体生长速率生产不含夹杂物的大质量好的单晶。

公开(公告)号：US09783911B2

公开(公告)日：2017-10-10

申请号：US14410969

申请日：2013-07-15

申请人： Nobuyoshi Yashiro ,  Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuhiro Okada ,  Koji Moriguchi ,  Hironori Daikoku ,  Hidemitsu Sakamoto ,  Motohisa Kado

发明人： Nobuyoshi Yashiro ,  Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuhiro Okada ,  Koji Moriguchi ,  Hironori Daikoku ,  Hidemitsu Sakamoto ,  Motohisa Kado

IPC分类号： C30B19/02 ,  C30B15/10 ,  C30B19/04 ,  C30B19/06 ,  C30B29/36 ,  C30B15/32

CPC分类号： C30B15/10 ,  C30B15/32 ,  C30B19/04 ,  C30B19/067 ,  C30B29/36 ,  Y10T117/1032

摘要： A production apparatus is used for a solution growth method. The production apparatus includes a seed shaft and a crucible. The seed shaft has a lower end surface to which an SiC seed crystal is attached. The crucible contains an SiC solution. The crucible includes a cylindrical portion, a bottom portion, and an inner lid. The bottom portion is disposed at a lower end of the cylindrical portion. The inner lid is disposed in the cylindrical portion. The inner lid has a through hole and is positioned below a liquid surface of the SiC solution when the SiC solution is contained in the crucible.

公开(公告)号：US20140116325A1

公开(公告)日：2014-05-01

申请号：US14126942

申请日：2012-06-11

申请人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Hironori Daikoku ,  Motohisa Kado ,  Hidamisu Kasamoto

发明人： Kazuhito Kamei ,  Kazuhiko Kusunoki ,  Nobuyoshi Yashiro ,  Nobuhiro Okada ,  Hironori Daikoku ,  Motohisa Kado ,  Hidamisu Kasamoto

IPC分类号： C30B15/10

CPC分类号： C30B15/10 ,  C30B17/00 ,  C30B19/02 ,  C30B19/08 ,  C30B29/36 ,  C30B35/00 ,  Y10T117/1032

摘要： A region of an SiC solution in the vicinity of an SiC seed crystal is cooled while suppressing the temperature variation in a peripheral region of the SiC solution. An apparatus includes a seed shaft and a crucible for an SiC solution. The seed shaft has a lower end surface for attachment to an SiC seed crystal. The crucible comprises a main body, an intermediate cover, and a top cover. The main body includes a first cylindrical portion and a bottom portion at a lower end portion of the first cylindrical portion. The intermediate cover is within the first cylindrical portion and above the liquid level of the SiC solution in the main body. The intermediate cover has a first through hole for the seed shaft. The top cover is disposed above the intermediate cover and has a second through hole for the seed shaft to pass through.

摘要翻译： 在SiC晶种附近的SiC溶液的区域被冷却，同时抑制SiC溶液的周边区域的温度变化。 一种装置包括种子轴和用于SiC溶液的坩埚。 种子轴具有用于连接到SiC晶种的下端表面。 坩埚包括主体，中间盖和顶盖。 主体包括在第一圆筒部的下端部的第一圆筒部和底部。 中间盖在主体内的第一圆柱形部分内和SiC溶液的液面之上。 中间盖具有用于种子轴的第一通孔。 顶盖设置在中间盖的上方，并且具有用于种子轴穿过的第二通孔。