WO2006022245A1 - pn接合を有する化合物半導体エピタキシャル基板の製造方法 - Google Patents
pn接合を有する化合物半導体エピタキシャル基板の製造方法 Download PDFInfo
- Publication number
- WO2006022245A1 WO2006022245A1 PCT/JP2005/015248 JP2005015248W WO2006022245A1 WO 2006022245 A1 WO2006022245 A1 WO 2006022245A1 JP 2005015248 W JP2005015248 W JP 2005015248W WO 2006022245 A1 WO2006022245 A1 WO 2006022245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compound semiconductor
- substrate
- junction
- epitaxial substrate
- semiconductor epitaxial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D8/00—Diodes
- H10D8/01—Manufacture or treatment
- H10D8/045—Manufacture or treatment of PN junction diodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
- H10P14/27—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials using selective deposition, e.g. simultaneous growth of monocrystalline and non-monocrystalline semiconductor materials
- H10P14/271—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials using selective deposition, e.g. simultaneous growth of monocrystalline and non-monocrystalline semiconductor materials characterised by the preparation of substrate for selective deposition
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
- H10P14/29—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials characterised by the substrates
- H10P14/2901—Materials
- H10P14/2907—Materials being Group IIIA-VA materials
- H10P14/2911—Arsenides
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
- H10P14/34—Deposited materials, e.g. layers
- H10P14/3402—Deposited materials, e.g. layers characterised by the chemical composition
- H10P14/3414—Deposited materials, e.g. layers characterised by the chemical composition being group IIIA-VIA materials
- H10P14/3421—Arsenides
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/20—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials
- H10P14/34—Deposited materials, e.g. layers
- H10P14/3438—Doping during depositing
- H10P14/3441—Conductivity type
- H10P14/3444—P-type
Definitions
- the present invention relates to a method for manufacturing a compound semiconductor epitaxial substrate having a pn junction.
- a mask that also has a force such as SiO on the compound semiconductor functional layer grown on the original substrate Forms a compound where the mask is not formed
- an epitaxial growth method including a selective growth process (hereinafter referred to as “selective growth method”) is used.
- selective growth method a compound semiconductor epitaxy substrate having a pn junction (including a pin junction) is manufactured, and an electrode or the like is placed on the substrate to divide the element to produce a field effect transistor (Schottky junction type).
- Compound semiconductor devices such as (FET) and heterobipolar transistors (HBT) have been manufactured!
- a substrate manufactured by a liquid encapsulated Czochoralski (LEC) method is usually used as a base substrate for manufacturing a compound semiconductor epitaxial substrate for these compound semiconductor elements.
- An original substrate having a compound single crystal force is used (for example, see Patent Document 1).
- Patent Document 1 Japanese Patent Laid-Open No. 11 268998
- Patent Document 2 JP-A-5-339100
- An object of the present invention is a method of manufacturing a compound semiconductor epitaxial substrate having a pn junction by an epitaxial growth method including a selective growth process, and provides a compound semiconductor element with little deterioration in characteristics. There is a need to provide a method for manufacturing a epitaxial substrate.
- the present inventors have intensively studied a manufacturing method by a selective growth method of a compound semiconductor epitaxial substrate having a pn junction, and as a result, have grown a compound semiconductor layer. Focusing on the residual strain of the original substrate, and if the average value of the residual strain is below a certain value, the compound semiconductor device that provides a compound semiconductor element having a pn junction is produced with less characteristic deterioration! As a result, the present invention has been completed. [0010] Specifically, the present invention provides a method for producing a compound semiconductor Epitakisharu substrate having a pn junction by selective growth method, the use of a base substrate having an average value of residual strain is 1. OX 10- 5 or less A method as described above is provided.
- the production method of the present invention has an average value of residual strain is characterized by using a strain less based board is 1. OX 10- 5 or less.
- the inventors of the present invention manufactured a compound semiconductor epitaxial substrate having a pn junction by a selective growth method using an original substrate with a small residual strain manufactured by the VGF method or the VB method,
- a compound semiconductor device is manufactured using a material, its initial electrical characteristics are not significantly improved as compared with a device using an original substrate by the LEC method, which has a large residual strain. It has been found that the deterioration due to the use of is reduced.
- the selective growth method a part of the compound semiconductor layer constituting the compound semiconductor element is epitaxially grown on the substrate, and then the grown layer is made of SiO or the like on the grown layer.
- another compound semiconductor layer is epitaxially grown and an electrode is provided to manufacture a compound semiconductor element.
- the thermal growth is caused by the difference in thermal expansion coefficient between the compound semiconductor layer formed by epitaxial growth and the SiO mask.
- the average value of the residual strain of a substrate used in the present invention 1. is 0 X 10- 5 or less. 1. 0 X 10- 5 super In such a case, there is a possibility that deterioration of the composite semiconductor element may proceed due to long-term use.
- the average value of the residual Tomeibitsu may be at 7 X 10- 6 or less, preferably in the gesture et preferred is 5 X 10- 6 or less.
- the growth of the compound semiconductor layer is usually performed by metal organic chemical vapor deposition (Metal Organic).
- MOCVD Chemical Vapor Deposition
- MBE Molecular Beam Epitaxy
- the residual strain of the compound semiconductor epitaxial substrate can be measured by, for example, a photoelastic method. Specifically, it can be measured by the method described in, for example, Proceedings of 8th Semi-Insulating III-V Materials, Warsaw Tru June, 1994, p95-98.
- the photoelastic method is a method for observing a stress concentration state by utilizing a birefringence phenomenon, and is generally used.
- the residual strain of the substrate is the absolute value of the difference between the radial strain Sr and the tangential direction St, and can be calculated by the following equation.
- ⁇ is the wavelength of the light used for measurement
- d is the thickness of the substrate
- n is the refractive index of the substrate
- ⁇ is the compound
- Phase difference caused by refraction ⁇ is main vibration azimuth, ⁇ and ⁇ and ⁇ are elastic tensors
- FIG. 1 shows an embodiment of a compound semiconductor device manufactured using a compound semiconductor epitaxial substrate according to the manufacturing method of the present invention, and shows a case where the compound semiconductor device is a diode.
- 1 is a semi-insulating GaAs substrate
- 2 is a buffer layer
- 3 is an n + GaAs layer.
- n + GaAs SiO insulating film 7 is applied, and p + GaAs layer 4 is stacked in the opening.
- a p-electrode 5 is deposited on the top
- an n-electrode 6 is deposited on the n + GaAs layer by sputtering.
- FIG. 2 shows a graph for explaining the current-voltage characteristics of this diode.
- this diode only a small amount of current flows in reverse bias, and the diode exhibits rectification. However, as the diode degrades after prolonged use, the amount of current at reverse bias increases as shown in Fig. 3.
- the current-voltage characteristic in which the increase in the amount of current at such a reverse bias is small is as shown in FIG.
- a diode is taken as an example, other elements having a pn junction, such as a junction field effect transistor (JFET), a heterobipolar transistor (HBT), etc., may be used as a compound according to the present invention.
- JFET junction field effect transistor
- HBT heterobipolar transistor
- the compound semiconductor device manufactured using a semiconductor epitaxial substrate has less deterioration in characteristics such as current gain ( ⁇ ) and maximum current (Imax) compared to conventional devices!
- the diode with the layer structure shown in Fig. 1 was manufactured as follows.
- a SiO insulating film 7 is deposited on the entire surface of the epitaxial substrate, followed by patterning using a photoresist as a mask.
- a p + GaAs layer 4 was selectively grown in this opening by MOCVD (Fig. 4 (b)). Further, after depositing the p-electrode 5 on the p + GaAs layer 4 by sputtering (FIG. 4 (c)), the n-electrode 6 is formed by opening the n-electrode forming part using the SiO 2 insulating film as a photoresist as a mask. (Fig. 4 (d)).
- FIG. 5 shows a graph showing the current-voltage characteristics of the compound semiconductor element (diode) obtained as described above. Then, when an excessive voltage of 3.7V was applied to this element, the deterioration acceleration test was conducted by energizing it for 10 minutes, and then the current-voltage characteristics were examined again, as shown in Fig. 6, the increase in reverse bias leakage current was It was almost unseen power. Further, when the cross section of the element after energization was observed with a TEM (transmission electron microscope), dislocation was not observed.
- TEM transmission electron microscope
- the substrate was prepared by VB method, except for using a GaAs substrate with an average residual strain 4 X 10- 6 was fabricated diodes under the same conditions as the actual Example 1.
- the element was inferior (reverse bias leakage current increase calorie), and almost no dislocation was observed.
- the substrate was prepared by the LEC method, except for using a GaAs substrate with an average residual strain 4 X 10- 5 was fabricated diodes under the same conditions as the actual Example 1.
- the reverse bias leakage current increased.
- the reverse bias leakage current was further increased as shown in FIG.
- the cross section of the device after energization was observed with a TEM (transmission electron microscope), a large amount of dislocations were observed.
- FIG. 1 is a layer structure diagram showing a diode according to an example of an embodiment of the present invention.
- FIG. 2 is a graph for explaining the current-voltage characteristics of a diode.
- FIG. 3 is a graph showing deterioration of the diode after energization.
- FIG. 4 is a diagram showing a manufacturing process of the pn junction element (diode) in FIG.
- FIG. 6 is a graph showing that the diode of Example 1 is not deteriorated after energization.
- FIG. 7 is a graph showing deterioration of the diode of Comparative Example 1 after energization.
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/660,936 US8906158B2 (en) | 2004-08-24 | 2005-08-23 | Method for producing compound semiconductor epitaxial substrate having PN junction |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004243413A JP2006060177A (ja) | 2004-08-24 | 2004-08-24 | pn接合を有する化合物半導体エピタキシャル基板の製造方法 |
| JP2004-243413 | 2004-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006022245A1 true WO2006022245A1 (ja) | 2006-03-02 |
Family
ID=35967457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/015248 Ceased WO2006022245A1 (ja) | 2004-08-24 | 2005-08-23 | pn接合を有する化合物半導体エピタキシャル基板の製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8906158B2 (ja) |
| JP (1) | JP2006060177A (ja) |
| KR (1) | KR20070048207A (ja) |
| TW (1) | TWI381428B (ja) |
| WO (1) | WO2006022245A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011035066A (ja) * | 2009-07-30 | 2011-02-17 | Sumitomo Electric Ind Ltd | 窒化物半導体素子、及び窒化物半導体素子を作製する方法 |
| KR20150118405A (ko) * | 2014-04-14 | 2015-10-22 | 삼성전자주식회사 | 메시지 운용 방법 및 그 전자 장치 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237766A (en) * | 1975-09-19 | 1977-03-23 | Nec Corp | Semiconductor device |
| JPH05339100A (ja) * | 1992-04-10 | 1993-12-21 | Sumitomo Electric Ind Ltd | 化合物半導体単結晶およびその成長方法 |
| JPH08119800A (ja) * | 1994-10-24 | 1996-05-14 | Sumitomo Electric Ind Ltd | Iii −v族化合物半導体材料の熱処理方法 |
| JP2000103699A (ja) * | 1998-09-28 | 2000-04-11 | Sumitomo Electric Ind Ltd | GaAs単結晶基板およびそれを用いたエピタキシャルウェハ |
| JP2001053005A (ja) * | 1999-08-06 | 2001-02-23 | Sumitomo Electric Ind Ltd | 化合物半導体エピタキシャルウェハおよびその製造方法 |
| JP2003257997A (ja) * | 2002-02-28 | 2003-09-12 | Sumitomo Electric Ind Ltd | 窒化ガリウム系半導体装置を製造する方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11268998A (ja) | 1998-03-23 | 1999-10-05 | Sumitomo Electric Ind Ltd | GaAs単結晶インゴットおよびその製造方法ならびにそれを用いたGaAs単結晶ウエハ |
-
2004
- 2004-08-24 JP JP2004243413A patent/JP2006060177A/ja active Pending
-
2005
- 2005-07-04 TW TW094122568A patent/TWI381428B/zh not_active IP Right Cessation
- 2005-08-23 KR KR1020077004607A patent/KR20070048207A/ko not_active Ceased
- 2005-08-23 WO PCT/JP2005/015248 patent/WO2006022245A1/ja not_active Ceased
- 2005-08-23 US US11/660,936 patent/US8906158B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237766A (en) * | 1975-09-19 | 1977-03-23 | Nec Corp | Semiconductor device |
| JPH05339100A (ja) * | 1992-04-10 | 1993-12-21 | Sumitomo Electric Ind Ltd | 化合物半導体単結晶およびその成長方法 |
| JPH08119800A (ja) * | 1994-10-24 | 1996-05-14 | Sumitomo Electric Ind Ltd | Iii −v族化合物半導体材料の熱処理方法 |
| JP2000103699A (ja) * | 1998-09-28 | 2000-04-11 | Sumitomo Electric Ind Ltd | GaAs単結晶基板およびそれを用いたエピタキシャルウェハ |
| JP2001053005A (ja) * | 1999-08-06 | 2001-02-23 | Sumitomo Electric Ind Ltd | 化合物半導体エピタキシャルウェハおよびその製造方法 |
| JP2003257997A (ja) * | 2002-02-28 | 2003-09-12 | Sumitomo Electric Ind Ltd | 窒化ガリウム系半導体装置を製造する方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI381428B (zh) | 2013-01-01 |
| KR20070048207A (ko) | 2007-05-08 |
| US20090031944A1 (en) | 2009-02-05 |
| TW200616049A (en) | 2006-05-16 |
| US8906158B2 (en) | 2014-12-09 |
| JP2006060177A (ja) | 2006-03-02 |
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