WO2004112111A1 - 化合物半導体、その製造方法及び化合物半導体素子 - Google Patents
化合物半導体、その製造方法及び化合物半導体素子 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 71
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- 239000000758 substrate Substances 0.000 claims abstract description 70
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims abstract description 48
- 239000000203 mixture Substances 0.000 claims abstract description 44
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims abstract description 17
- 239000013078 crystal Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 26
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
- H01L29/7782—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with confinement of carriers by at least two heterojunctions, e.g. DHHEMT, quantum well HEMT, DHMODFET
- H01L29/7783—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with confinement of carriers by at least two heterojunctions, e.g. DHHEMT, quantum well HEMT, DHMODFET using III-V semiconductor material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02387—Group 13/15 materials
- H01L21/02395—Arsenides
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02455—Group 13/15 materials
- H01L21/02461—Phosphides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02455—Group 13/15 materials
- H01L21/02463—Arsenides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02494—Structure
- H01L21/02496—Layer structure
- H01L21/02505—Layer structure consisting of more than two layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/02546—Arsenides
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. CVD
Definitions
- COMPOUND SEMICONDUCTOR PROCESS FOR PRODUCING THE SAME, AND COMPOUND SEMICONDUCTOR ELEMENT
- the present invention relates to a compound semiconductor having a low dislocation density, a method for producing the same, and a compound semiconductor device using the same.
- compound semiconductor elements used in power amplifier switches for mobile phones are mainly formed by forming various heterostructures on a GaAs substrate by an epitaxy method or the like.
- a high mobility transistor hereinafter, referred to as HEMT
- an n-type A 1 GaAs electron supply layer is formed on a GaAs substrate.
- an InGaAs channel layer are formed to provide a compound semiconductor device using a high mobility two-dimensional electron gas in a channel layer.
- a method in which a composition gradient layer of I: 133 31nA1As is provided on a buffer layer on a GaAs substrate.
- a linear graded buffer method in which the lattice constant of this composition gradient layer is gradually changed in the thickness direction of the layer (see, for example, WE Hoke et al., J. Va Sci. Technol. B, 19 (2001) 1505)
- a step-delayed buffer method in which the lattice constant of the composition gradient layer is changed stepwise in the thickness direction of the layer (for example, S. Goze et al., J. Cryst. Growth 201/202 (2001) 155) is mainly used.
- the former is a method of gradually relaxing lattice strain in the buffer layer and minimizing the occurrence of dislocations
- the latter is a method in which dislocations are bent at the interface by changing the composition stepwise, and thereby the dislocations propagate to the upper layer It is a method to prevent you from doing so.
- All of the above-mentioned conventional methods are effective in reducing misfit dislocations.Compound semiconductor devices using epitaxy substrates manufactured by these methods have been actually manufactured on a trial basis. Not in. The problem with these conventional methods is that the buffer layer is very thick, 0.5 m or more. For example, when the linear graded buffer method is adopted, a buffer layer thickness of 1.5 ⁇ m is required.
- the reason is that when the film thickness is small, the strain due to lattice mismatch is concentrated on the thin buffer and the dislocation density becomes very high.
- the dislocation direction can be changed at each buffer interface, so that the buffer thickness can be reduced.
- the buffer layer thickness is 0.6 m in the example disclosed in the above document.
- Stacking a thick film on a substrate requires more raw materials and increases the growth time, which increases costs. Therefore, even if an expensive InP substrate is replaced with an inexpensive GaAs substrate, the cost reduction will be small and the cost will be reduced. The purpose may not be achieved.
- an epitaxial substrate for manufacturing a compound semiconductor device such as an HEMT may have an adverse effect on the mobility of the HEMT, which has been completed.
- the thickness of the buffer layer is large, high concentration of dislocations accumulate in the buffer layer, which may increase the leakage current and reduce various reliability, and may reduce the electrical characteristics of the compound semiconductor device. This tends to reduce reliability.
- An object of the present invention is to provide a compound semiconductor that can solve the above-described problems in the conventional technology, and a method for manufacturing the same.
- An object of the present invention also provides a compound semiconductor device having excellent electrical characteristics and reliability ⁇ ) and Mr. ⁇ is 0 Disclosure of the Invention
- an InGaP buffer layer or an InGaAsP buffer having a film thickness of 5 nm or more and 500 nm or less on a GaAs substrate. After forming the layer, it was found that by laminating an InP, InGaAs or InA1As layer or the like on the buffer layer, the number of surface defects was reduced and the surface state was improved, and based on this finding, The present invention has been accomplished.
- a feature of the present invention is a compound semiconductor formed by layering a compound semiconductor crystal or an InP crystal having a lattice constant closer to InP than a lattice constant of GaAs on a GaAs substrate.
- the crystals are formed on a GaAs substrate via an InGaP buffer layer or an InGaAsP buffer layer, and the thickness of the buffer layer is 5 nm or more and 500 nm or less. On the point.
- the compound semiconductor crystal closer to the lattice constant of InP than the lattice constant of GaAs may be InGaAs or InA1As crystal.
- the In composition of at least the upper layer 5 nm of the InGa? N buffer layer or the InGaAsP buffer layer may be higher than the composition that lattice-matches with the GaAs.
- HEMTs or other compound semiconductor elements having excellent electrical characteristics and reliability can be manufactured.
- Another feature of the present invention is a method for producing a compound semiconductor crystal or an InP crystal having a lattice constant closer to InP than a lattice constant of GaAs on a GaAs substrate.
- An InGaP buffer layer or an InGaP buffer layer is grown on a GaAs substrate, and a GaAs lattice is formed on the InGaP buffer layer or the InGaAsP buffer layer.
- the point is to grow a compound semiconductor crystal or an InP crystal closer to the lattice constant of InP than the constant.
- FIG. 1 is a layer structure diagram showing one embodiment of the compound semiconductor according to the present invention.
- FIG. 2 is a graph showing the measurement results of the concentration distribution of Ga and In indicating the In segregation phenomenon of the InGaP layer in FIG.
- FIG. 3 is a layer structure diagram showing another embodiment of the compound semiconductor according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a layer structure diagram showing one embodiment of the compound semiconductor according to the present invention.
- a GaAs buffer layer 2 and an InGaP buffer layer 3 are formed on a semi-insulating GaAs substrate 1 in this order.
- the GaAs buffer layer 2 does not have to be formed.
- the layer thickness of the InGaP buffer 3 is 30 nm in the present embodiment, and the ratio of the In composition, that is, the ratio of the number of In moles to the total number of moles of In and Ga is about 5 It is higher than 0.48 in the nm range, that is, about 5 nm from the boundary with the barrier layer 4 above this layer, and is 0.48 in other ranges.
- the thickness of the InGaP buffer layer 3 may be in the range of 5 nm or more and 500 nm or less.
- the 111 composition is 0.48
- InGaP is lattice-matched to GaAs.
- This value of 0.48 can be calculated from the generally known group III-V quaternary alloy composition diagram (for example, Haruo Nagai, Sadao Adachi, Takashi Fukui "III-V semiconductor mixed crystal", Corona Corporation ( 1 9 88)).
- the In composition that lattice-matches with GaAs can be determined in the same manner. In this case, the In composition depends on the As composition. For example, if the As composition is 0.5, the 111 composition is 0.24. If the composition is different from As, the In composition has a different value.
- the spacer layer 6 made of InAlAs is formed in this order.
- electron supply layers 7 and 11 composed of Si-doped InA1As having an In composition of 0.52.
- a Schottky layer 8 made of In, and a contact layer 9 made of InGaAs having an In composition power of 0.53 and doped with Si are formed in this order.
- Each layer formed on the semi-insulating GaAs substrate 1 can be sequentially formed by, for example, a metal organic chemical vapor deposition method (hereinafter, sometimes referred to as a MOCVD method).
- a MOCVD method metal organic chemical vapor deposition method
- the InGaP buffer layer 3 is formed with the intention that the In composition is uniformly 0.48.
- the 111 composition is 0. It is much larger than 48, and In becomes excessive near the boundary with the barrier layer 4.
- Ga in the InGaP buffer layer 3 becomes insufficient near the boundary with the barrier layer 4.
- the layer having a compound semiconductor crystal closer to the lattice constant of InP than the lattice constant of GaAs is located above the region of the outermost surface of the InGaP buffer layer 3 where In is excessive. Is formed.
- FIG. 2 is a graph showing the measurement results.
- the graph shown in FIG. 2 shows that an InGaP layer was formed on a GaAs substrate by MOCVD so as to have an In composition of 0.48 to a thickness of about 24 nm.
- 3 shows the results of measuring the concentrations of In and Ga in a layer by performing SIMS analysis.
- the horizontal axis shows the depth from the surface of the InGaP layer, and the vertical axis shows the concentrations of In and Ga.
- FIG. 2 shows that the thickness of the InGaP layer at which In becomes excessive depends on the growth temperature and the like, but is about 5 nm or more. If the thickness of the InGaP layer is too thin, it is considered that the stress due to lattice mismatch per unit film thickness is too large, and the effect of suppressing the generation of misfit dislocation expected in the present invention is reduced.
- a compound layer was formed on the GaAs substrate by MOCVD to form 1110 & 3011111 and an InP layer of 100 nm.
- a semiconductor epitaxial substrate was manufactured.
- the growth temperature of each epitaxial film was studied in the range of 400 to 700 ° C.
- the surface condition of the obtained epitaxial substrate was observed depending on the growth temperature, and the Haze value was measured. The results were as follows.
- the InGaP buffer layer 3 is preferably grown under a growth temperature condition of 400 ° C. or more and 600 ° C. or less, and more preferably a growth temperature condition of 400 ° C. to 580 ° C.
- the MOCVD growth temperature was fixed at 550 ° C, and the InGaP buffer film thickness was varied in the range of 15 nm to 300 nm on the GaAs substrate, and the I An n P layer was formed to a thickness of 100 nm to produce a compound semiconductor epitaxial substrate.
- the surface state of the obtained epitaxial substrate was observed depending on the thickness of the InGaP buffer, and the Haze value was measured. The results were as follows.
- the Haze value tends to decrease as the InGaP thickness increases.
- the change value due to the decrease in force was very small.
- the composition of the InGaP layer starts to be affected by the segregation of In from a distance of 5 nm to 10 nm from the surface. From this, it is estimated that the minimum film thickness at which dislocations can be effectively confined is about 5 to 10 nm.
- the thickness of the InGaP layer is increased from this minimum thickness, the surface roughness of the InGaP layer is gradually improved.
- the film thickness is about 10 O nm or more, the degree of the improvement becomes small.
- a layer with a high In composition exists in the InGaP layer, especially near the outermost surface, and the InGaP layer has a thickness of 5 nm or more at a temperature lower than 600 ° C. It is considered that misfit dislocations due to lattice mismatch are effectively confined when the layers grow thick.
- the thickness of the InGaP buffer layer or the InGaAsP buffer layer is generally 5 nm or more and 500 nm or less, preferably 5 nm or more and 300 nm or less, more preferably 5 nm or more. It is 100 nm or less, more preferably 10 nm or more and 50 nm or less.
- the compound semiconductor epitaxial substrate 10 shown in FIG. 1 is configured according to the above concept, and a thin film of a high-quality lattice-mismatched buffer layer can be obtained.
- the InGaP buffer layer was grown at a relatively low temperature following the InGaP buffer layer.
- the present inventors have found that, if annealing is performed at a relatively high temperature, the dislocation density can be further reduced, and the characteristics of the compound semiconductor device when manufactured can be improved.
- the compound semiconductor 20 shown in FIG. 3 is based on the above concept, and an InP buffer layer 4A is provided between the InGaP buffer layer 3 and the barrier layer 4 composed of InP. It differs from the compound semiconductor 10 of FIG. 1 only in the point of being provided. Therefore, the same reference numerals are given to the portions corresponding to the respective portions in FIG. 1 among the respective portions in FIG. 3, and the description thereof will be omitted.
- this other buffer layer must be InP in consideration of heat conduction. This is because InGaAs and InAlAs have small thermal conductivity coefficients. Ternary compound semiconductors such as InA1As and InGaAs have lower thermal conductivity than binary compound semiconductors such as InP and GaAs. Therefore, when a compound semiconductor device is manufactured using this compound semiconductor, heat dissipation during operation of the obtained device is not sufficient, the temperature of the device increases, and the characteristics deteriorate.
- the thermal conductivity is, for example, 0.05 WZcm '° C for InGaAs, and 0.68 W / cm ⁇ ° C for 111?
- the In concentration near the surface of the InGaP buffer layer 3 is high, and the InGaP buffer Considering that the composition of the fa-layer 3 is close to InP, forming the InP buffer layer 4A directly above the InGaP buffer layer results in an interface with a small lattice constant difference (small lattice mismatch). It is formed.
- the growth temperature of the InP buffer layer 4A is related to the flatness near the surface of the InGaP buffer layer 3 and the dislocation density.
- the InGaP buffer layer 3 is thin, has good flatness, and has few misfit dislocations. However, by appropriately selecting the growth conditions of the InP buffer layer 4A formed in contact with the InGaP buffer layer 3, the flatness of the surface of the InP buffer layer 4A can be improved. Since there is a possibility that the surface flatness of the buffer layer 3 may be better than that of the buffer layer 3, the inventors have studied the growth temperature and the film thickness of the InP buffer layer 4A.
- a 1 nGaP layer was grown on a GaAs substrate by MOC VD method at 550 at 30 nm with a thickness of 550 nm. It grew to 50 nm in the range of ° C to 600 ° C. Further, an InP layer was grown at a growth temperature of 550 ° C. to a thickness of 500 nm to produce an epitaxial substrate. Then, the surface state of the obtained epitaxial substrate was evaluated. The results were as follows. Growth temperature (° c) Surface condition H az e value (p pm)
- the growth temperature of the InP layer is preferably from 400 to 550 ° C, more preferably from 400 to 500 ° C.
- anneal is applied at a temperature of 650 ° C or more and 730 ° C or less after the growth of the InP buffer layer, this anneal can completely alleviate the slight residual lattice strain and reduce the error. Fitting dislocations are also looped and can be prevented from propagating to the upper layer. Note that it is preferable that the annealing operation is performed immediately after the growth of the InP buffer.
- the compound semiconductor epitaxial substrate 10 shown in FIG. 3 is constructed according to the above concept, and provides a compound semiconductor element having excellent characteristics despite the thin buffer layer. It becomes.
- the total film thickness of the InGaP buffer layer 3 and the InP buffer layer 4A is within a range of 5 nm or more and 500 nm or less. I just need.
- an InGaP buffer layer is used!
- the total film thickness of the InGaAsP buffer layer and the InP buffer layer 4A may be in the range of 5 nm to 500 nm.
- the total thickness of the thickness of the InGaP buffer layer or the InGaP s P buffer layer and the thickness of the InP buffer layer may be 5 nm or more and 500 nm or less, preferably It is 25 nm or more and 500 nm or less, more preferably 25 nm or more and 200 nm or less, and further preferably 30 nm or more and 130 nm or less.
- the thickness of the InP buffer layer is preferably 20 nm or more and 200 nm or less, more preferably 20 nm or more and 100 nm or less, and even more preferably 20 nm or more and 80 nm or less.
- the growth temperature of this InP barrier layer may be the conventional InP growth temperature.
- MOCV D method it is about 550 ° C to 700 ° C.
- HEMT high electron mobility transistor
- HBT hetero bipolar transistor
- M0CVD metalorganic chemical vapor deposition
- MBE molecular beam epitaxy
- InGaP buffer layer has been described as an example, but an InGaP buffer layer can be used in the same manner.
- An epitaxial substrate for HEMT having a compound semiconductor heterostructure with a layer structure shown in FIG. 1 was fabricated by the M ⁇ CVD method as follows. Introducing a semi-insulating G a A s the substrate 1 to the MOCVD thin film production apparatus, was subjected to a substrate surface treatment was raised, A s H 3 gas and metal organic compounds as raw materials semi-insulating G a A s A buffer layer 2 composed of a GaAs layer was formed on a substrate 1. Then switch the As H 3 gas PH 3 gas, I n G a P buffer layer 3 (I n Composition 0.48) 3 was 0 nm formed. At this time, the growth temperature of the InGaP buffer layer was 550.
- the InP layer 4 In composition 0.52), the InGaAs channel layer 5 (In0.53), and the InAlAs Sublayer 6 (In composition 0.52), electron supply layer (Si planar layer) 7, InA1A s short-circuit layer 8 (In composition 0.52), and Si A doped InGaAs contact layer 9 (I ⁇ ⁇ 3 ⁇ 40.53) was formed.
- the surface condition of the obtained epitaxial substrate was good, and no cloudiness, cross hatch, etc. were observed.
- the above-mentioned epitaxy substrate was evaluated by Hall measurement by the vap der Pauw method.
- the contact layer 9 of this epitaxial substrate was removed by etching and the hole measurement was performed at room temperature, it was equivalent to an epitaxial substrate for HEMT using a mobility of 9100 cm 2 / Vs and an InP group. The value of was shown.
- An epitaxial substrate for HEMT was produced under exactly the same conditions as in Example 1 except that the growth temperature of the InGaP buffer was set to 500 ° C and the film thickness was set to 15 nm.
- the surface condition of the obtained epitaxial substrate was good, and no cloudiness or cross hatch was observed at all.
- the Epitakisharu contact layer 9 of the substrate by etching was subjected to e Ichiru measured at room temperature, using the mobile 'of 8 900 cm 2 ⁇ s and I n P substrate HEM The value was equivalent to that of the epitaxial substrate for T.
- An epitaxial substrate having a layered structure as shown in FIG. 3 and having a semiconductor structure was fabricated by MOCVD as follows. First, an InGa abuffer layer 3 (I ⁇ composition 0.48) of 30 nm was formed as in Example 1. At this time, the growth temperature of the InGaP buffer layer was 550. Next, the temperature was lowered to 435 ° C, and an InP buffer layer 4A was grown to a thickness of 50 nm. The temperature was further increased to an annealing temperature of 650 ° C, annealing was performed, and after the temperature was lowered to 640 ° C, the InP layer 4 and the InGaAs channel layer 5 (Inn) were sequentially switched while switching the raw materials.
- composition 0.53), InA1As support layer 6 (In composition 0.52), Si-brane doped layer 7, InA1As Shottky layer 8 (In composition 0. 52), and an InGaAs contact layer 9 (In composition 0.53) doped with Si was formed thereon.
- the surface condition of the obtained epitaxial substrate was good, and no cloudiness, cross hatch, etc. were observed.
- the HE MT for Epitakisharu contactor coat layer 9 of the substrate to room temperature etching, mobility 91 00 cm 2 ZV ⁇ s and a HEMT fabricated using I nP substrate It showed almost the same value as the epitaxial substrate.
- the process up to the growth of the InP buffer layer 4A is performed in the same manner as in Example 3, the temperature is raised to an initial temperature of 700 ° C., annealing is performed, and the growth of the layers after the InP buffer layer 4 is continued.
- the same procedure as in Example 3 was performed to produce an epitaxial substrate for HEMT. At this time, the surface state of the obtained epitaxial substrate was good, and no cloudiness, cross hatch, or the like was observed.
- the process up to the growth of the InP buffer layer 4 A was performed in the same manner as in Example 3.
- the temperature was increased to an initial temperature of 700 ° C. and annealing was performed, and then the temperature was lowered to 480 ° C. .
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CN113314398A (zh) * | 2021-05-25 | 2021-08-27 | 中国科学院苏州纳米技术与纳米仿生研究所 | 在GaP/Si衬底上外延生长InGaAs薄膜的方法及InGaAs薄膜 |
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TWI489626B (zh) * | 2012-08-24 | 2015-06-21 | Visual Photonics Epitaxy Co Ltd | Bipolar high electron mobility transistor |
WO2016069181A1 (en) * | 2014-10-30 | 2016-05-06 | Applied Materials, Inc. | Method and structure to improve film stack with sensitive and reactive layers |
US10489424B2 (en) | 2016-09-26 | 2019-11-26 | Amazon Technologies, Inc. | Different hierarchies of resource data objects for managing system resources |
TWI640648B (zh) * | 2017-11-24 | 2018-11-11 | 行政院原子能委員會核能硏究所 | 以有機金屬化學氣相沉積法製作磷化銦鎵磊晶層的方法 |
CN110517948B (zh) * | 2019-07-26 | 2021-12-21 | 中国科学院微电子研究所 | 一种硅衬底上外延InP半导体的方法及制得的半导体器件 |
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- 2004-05-24 KR KR1020057023527A patent/KR20060026866A/ko not_active Application Discontinuation
- 2004-05-24 WO PCT/JP2004/007413 patent/WO2004112111A1/ja active Application Filing
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CN113314398A (zh) * | 2021-05-25 | 2021-08-27 | 中国科学院苏州纳米技术与纳米仿生研究所 | 在GaP/Si衬底上外延生长InGaAs薄膜的方法及InGaAs薄膜 |
CN113314398B (zh) * | 2021-05-25 | 2024-02-06 | 中国科学院苏州纳米技术与纳米仿生研究所 | 在GaP/Si衬底上外延生长InGaAs薄膜的方法及InGaAs薄膜 |
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TW200504890A (en) | 2005-02-01 |
US20070158684A1 (en) | 2007-07-12 |
TWI360186B (ja) | 2012-03-11 |
KR20060026866A (ko) | 2006-03-24 |
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