Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2019043927) SILICON CARBIDE EPITAXIAL SUBSTRATE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/043927 International Application No.: PCT/JP2017/031668
Publication Date: 07.03.2019 International Filing Date: 01.09.2017
IPC:
C30B 29/36 (2006.01) ,C30B 25/20 (2006.01) ,H01L 21/20 (2006.01) ,H01L 21/205 (2006.01)
C CHEMISTRY; METALLURGY
30
CRYSTAL GROWTH
B
SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
29
Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
10
Inorganic compounds or compositions
36
Carbides
C CHEMISTRY; METALLURGY
30
CRYSTAL GROWTH
B
SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
25
Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour deposition growth
02
Epitaxial-layer growth
18
characterised by the substrate
20
the substrate being of the same materials as the epitaxial layer
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
21
Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
02
Manufacture or treatment of semiconductor devices or of parts thereof
04
the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer, carrier concentration layer
18
the devices having semiconductor bodies comprising elements of the fourth group of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
20
Deposition of semiconductor materials on a substrate, e.g. epitaxial growth
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
21
Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
02
Manufacture or treatment of semiconductor devices or of parts thereof
04
the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer, carrier concentration layer
18
the devices having semiconductor bodies comprising elements of the fourth group of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
20
Deposition of semiconductor materials on a substrate, e.g. epitaxial growth
205
using reduction or decomposition of a gaseous compound yielding a solid condensate, i.e. chemical deposition
Applicants:
住友電気工業株式会社 SUMITOMO ELECTRIC INDUSTRIES, LTD. [JP/JP]; 大阪府大阪市中央区北浜四丁目5番33号 5-33, Kitahama 4-chome, Chuo-ku, Osaka-shi, Osaka 5410041, JP
Inventors:
堀 勉 HORI, Tsutomu; JP
宮瀬 貴也 MIYASE, Takaya; JP
本家 翼 HONKE, Tsubasa; JP
山本 裕史 YAMAMOTO, Hirofumi; JP
沖田 恭子 OKITA, Kyoko; JP
Agent:
伊東 忠重 ITOH, Tadashige; JP
伊東 忠彦 ITOH, Tadahiko; JP
Priority Data:
Title (EN) SILICON CARBIDE EPITAXIAL SUBSTRATE
(FR) SUBSTRAT ÉPITAXIAL DE CARBURE DE SILICIUM
(JA) 炭化珪素エピタキシャル基板
Abstract:
(EN) This silicon carbide epitaxial substrate is provided with a single-crystal silicon carbide substrate having a principal surface that has a polytype of 4H and is inclined by an angle θ in an <11-20> orientation from a {0001} plane, and a silicon carbide epitaxial layer 11 of a film thickness t formed on the principal surface. The single-crystal silicon carbide substrate has a diameter of 150 mm or greater. The angle θ is more than 0°, and not more than 6°. Pairs of a pit of a screw dislocation and an oblique line defect present at a location spaced apart by t/tanθ from the pit is present on the surface of the silicon carbide epitaxial layer. The density of pairs of pits and oblique line defects is 0.2/cm2 or less.
(FR) La présente invention concerne un substrat épitaxial de carbure de silicium pourvu d’un substrat de carbure de silicium monocristallin présentant une surface principale qui possède un polytype de 4H et qui est incliné d’un angle θ dans un sens <11-20> depuis un plan {1}, et une couche épitaxiale de carbure de silicium (11) d’une épaisseur de film t formée sur la surface principale. Le substrat de carbure de silicium monocristallin présente un diamètre supérieur ou égal à 150 mm. L’angle θ est supérieur à 0°, et inférieur ou égal à 6°. Des paires d'un creux d’une dislocation en vis et un défaut en ligne oblique présent à un emplacement espacé du creux de t/tanθ est présent sur la surface de la couche épitaxiale de carbure de silicium. La densité des paires de creux et des défauts en ligne oblique est inférieure ou égale à 0,2/cm2.
(JA) 炭化珪素エピタキシャル基板は、ポリタイプが4Hであり、{0001}面から<11-20>方位に角度θ傾斜した主面を有する炭化珪素単結晶基板と、主面の上に形成された膜厚tの炭化珪素エピタキシャル層11と、を備え、炭化珪素単結晶基板の径は150mm以上であり、角度θは0°を超え6°以下であって、炭化珪素エピタキシャル層の表面には、らせん転位のピットと、ピットよりt/tanθ離れた位置に存在する斜め線欠陥とのペアが存在しており、ピットと斜め線欠陥のペアの密度が0.2個/cm以下である。
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)