WO2020182444A1 - Aufwachsstruktur für ein strahlung emittierendes halbleiterbauelement und strahlung emittierendes halbleiterbauelement - Google Patents
Aufwachsstruktur für ein strahlung emittierendes halbleiterbauelement und strahlung emittierendes halbleiterbauelement Download PDFInfo
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- WO2020182444A1 WO2020182444A1 PCT/EP2020/054648 EP2020054648W WO2020182444A1 WO 2020182444 A1 WO2020182444 A1 WO 2020182444A1 EP 2020054648 W EP2020054648 W EP 2020054648W WO 2020182444 A1 WO2020182444 A1 WO 2020182444A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/815—Bodies having stress relaxation structures, e.g. buffer layers
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/822—Materials of the light-emitting regions
- H10H20/824—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/822—Materials of the light-emitting regions
- H10H20/824—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP
- H10H20/8242—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP characterised by the dopants
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- 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
- H10P14/32—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials characterised by intermediate layers between substrates and deposited layers
- H10P14/3202—Materials thereof
- H10P14/3214—Materials thereof being Group IIIA-VA semiconductors
- H10P14/3221—Arsenides
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- 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
- H10P14/32—Formation of materials, e.g. in the shape of layers or pillars of semiconductor materials characterised by intermediate layers between substrates and deposited layers
- H10P14/3242—Structure
- H10P14/3244—Layer structure
- H10P14/3251—Layer structure consisting of three or more layers
- H10P14/3252—Alternating layers, e.g. superlattice
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- 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
- H10P14/3418—Phosphides
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S2301/00—Functional characteristics
- H01S2301/17—Semiconductor lasers comprising special layers
- H01S2301/173—The laser chip comprising special buffer layers, e.g. dislocation prevention or reduction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
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- 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
- H10P14/3442—N-type
Definitions
- a growth structure for a radiation-emitting semiconductor component which contains, in particular, a material based on arsenide compound semiconductors.
- dislocation density in GaAs wafers is, however, at 10 5 cm -2. Dislocations that occur in the GaAs substrate
- the semiconductor structure or luminescence diode structure can lead to spontaneous failures and increased aging during operation.
- a growth structure for a radiation-emitting semiconductor component is specified.
- the growth structure is particularly suitable for a laser diode.
- the growth structure comprises a
- Semiconductor substrate containing a material based on arsenide compound semiconductors containing a material based on arsenide compound semiconductors.
- the growth structure has a buffer structure which is arranged on the semiconductor substrate and contains a material based on arsenide compound semiconductors.
- a structure designated in this way or a part of this structure preferably comprises Al n Ga m In- nm As, where 0 ⁇ n ⁇ 1, 0 ⁇ m ⁇ 1 and n + m ⁇ 1. This material does not necessarily have to be mathematically exact
- composition according to the above formula can have one or more dopants as well as additional ones
- the buffer structure comprises a buffer layer which has at least one n-doped layer which contains oxygen.
- the at least one n-doped layer therefore contains oxygen.
- a mole fraction of oxygen in the n-doped layer is between 10 15 cnr 3 and 10 19 cm -3.
- the mole fraction of oxygen is in the n-doped layer is greater than 10 15 cnr 3 and at most 10 19 cm -3.
- the oxygen - for example like a
- the oxygen in the n-doped layer advantageously helps to compensate for the
- oxygen-containing layer is between 10 17 cnr 3 and 10 18 cm -3.
- the mole fraction can be at least 100 ppm and at most 20,000 ppm. Also here are
- Deviations of up to 10% are tolerable. With a mole fraction in the specified ranges, it is possible that a large part of the dislocation lines are bent so that they do not reach a surface of the
- Luminous diode structure is provided.
- Radiation-emitting semiconductor component the electrical conductivity of the buffer layer or respectively
- Buffer structure guaranteed.
- several layers contained in the buffer structure are n-doped with the same dopant.
- the buffer structure is or are contained in the buffer structure
- Layers grown on the semiconductor substrate can be done by epitaxial deposition, for example by means of MOCVD (“Metal-Organic Chemical Vapor Deposition”), MBE (“Molecular Beam Epitaxy”) or LPE (“Liquid Phase Epitaxy”).
- MOCVD Metal-Organic Chemical Vapor Deposition
- MBE Molecular Beam Epitaxy
- LPE Liquid Phase Epitaxy
- the above-mentioned dislocation density means the total length of all dislocation lines per unit volume in a crystalline solid.
- the dislocation lines extend from the growth substrate into the luminescence diode structure and lead to defects there. This problem becomes
- Luminous diode structure can penetrate, and the
- the luminescence diode structure is therefore largely dislocation-free or the dislocation density is insignificant
- the at least one n-doped oxygen-containing layer contains AlGaAsO. Since AlGaAs or AlGaAsO has almost the same lattice constant as GaAs, the less common gallium can advantageously be at least partially replaced by the more common aluminum.
- a mole fraction of aluminum is preferably between 1% and 100% inclusive, particularly preferably between 1% and 60% inclusive.
- the at least one n-doped layer (5) contains Al m Ga As m: 0, where 0:01 ⁇ m ⁇ 1, more preferably 0:01 ⁇ m ⁇ 0.6 applies. Deviations of up to 10% are quite tolerable.
- the oxygen is introduced into a GaAs material with a complex aluminum compound, with AlGaAsO being formed.
- the at least one n-doped oxygen-containing layer consists of AlGaAsO.
- the at least one n-doped oxygen-containing layer is preferably free from indium.
- Buffer layer made of an n-doped, oxygen-containing
- the buffer layer is a so-called “bulk layer”.
- the buffer layer is largely homogeneous, that is to say made from only a single material, and is comparatively thick or stable.
- the n-doped, oxygen-containing layer can or buffer layer have a thickness between 50 nm and 800 nm inclusive.
- a suitable material for the n-doped oxygen-containing layer or buffer layer is preferably AlGaAsO, that is to say AlGaAs mixed with oxygen.
- the n-doped layer can be n-doped with dopants such as Te and / or Si.
- the Buffer layer in particular formed largely without interruption.
- the buffer layer can have at least one n-doped, oxygen-free layer, that is to say a layer without oxygen, and at least one n-doped, oxygen-containing layer which
- Buffer layer has a plurality of n-doped, oxygen-free and a plurality of n-doped oxygen-containing layers, which are arranged alternately.
- the at least one oxygen-containing layer can be formed from AlGaAsO. For which at least one oxygen-free layer comes
- the buffer layer particularly preferably consists of a superlattice, that is to say of a sequence of thin layers which are periodic
- the superlattice can have 5 to 20 repetitions.
- the at least one oxygen-free layer can be made thicker than the at least one oxygen-containing layer.
- the at least one oxygen-free layer is preferably with a thickness between 0.5 nm inclusive, which is a monolayer
- the thickness of the at least one oxygen-containing layer can be between 0.5 nm, preferably 1 nm, and 5 nm. Deviations of up to 10% are quite tolerable.
- tellurium, silicon or sulfur can be used as the n-type dopant for the at least one oxygen-free layer. Both in the oxygen-containing and in the oxygen-free layers, the same n-dopant can be used for doping these layers.
- the buffer structure consists of the buffer layer, that is to say the
- the buffer structure has no further layers.
- the buffer structure can have at least one further buffer layer.
- the further buffer layer is arranged, for example, on a side of the above-described first buffer layer facing the semiconductor substrate.
- the further, second buffer layer can contain GaAs and be n-doped.
- tellurium, silicon or sulfur can be used as the n-type dopant for the further buffer layer
- the second buffer layer is free of oxygen. If the buffer structure has a further buffer layer, the first buffer layer can be made thinner. In this case, a thickness of about 10 nm can be sufficient.
- the buffer structure can be on a side of the first, facing away from the semiconductor substrate
- Buffer layer have a further buffer layer.
- This buffer layer can also contain GaAs and be doped with an n-type dopant such as tellurium, silicon or sulfur and be free of oxygen.
- Buffer structure a first buffer layer that consists of a
- the crystal quality of the growth structure can be further improved by means of the further buffer layer (s).
- the lattice constant of the growth structure can be further improved by means of the further buffer layer (s).
- the buffer structure comprises a first buffer layer, which is designed as a “bulk layer” with the above-mentioned properties, and also has a second and / or third buffer layer, which (each) consists of a superlattice with the above-mentioned
- the at least one further buffer layer can serve as an etch stop layer when the semiconductor substrate or the growth structure is detached from the luminescence diode structure.
- a radiation-emitting semiconductor component which has a growth structure as described above.
- the growth structure thus comprises a semiconductor substrate that has an arsenide
- the growth structure comprises a buffer structure which is arranged on the semiconductor substrate, which contains a material based on arsenide compound semiconductors and which has a buffer layer with at least one n-doped layer which contains oxygen.
- the first area is preferably an n-conducting area and the second area is a p-conducting area.
- the first area is particularly preferred on one of the first area
- a structure designated in this way or a part of this structure preferably comprises Al n Ga m In- nm As or Al n Ga m In- nm P, where 0 ⁇ n ⁇ 1, 0 ⁇ m ⁇ 1 and n + m ⁇ 1.
- This material does not necessarily have to have a mathematically exact composition according to the above formula, but rather it can have one or more dopants as well as additional components that
- the above formula only contains the essential components of the crystal lattice (Al, Ga, In, P), even if these can be partially replaced by small amounts of other substances.
- the luminescence diode structure by means of MOCVD ("Metal-Organic Chemical Vapor Deposition"), MBE
- based luminescence diode structure or its active area is for generating radiation with a wavelength in the red (InxGayAll-x-yP) to infrared
- the radiation-emitting transmits
- the active area of the luminescence diode structure preferably has a pn junction, a double heterostructure, a single quantum well structure (SQW) or a
- quantum well structure for generating radiation.
- quantum well structure includes in particular any structure in which
- quantum well structure does not contain any information about the dimensionality of the quantization. It thus includes, among other things, quantum wells, quantum wires and quantum dots and any combination of these structures.
- the n-conductive region, the active region and the p-conductive region can each have one or more layers.
- the radiation-emitting semiconductor component is a
- Laser diode i.e. a coherent emitter.
- the laser diode is a
- High-performance laser diode that produces a radiation output of 20 W up to and including 300 W with a current between 20 A and 300 A.
- the luminescence diode structure of the semiconductor component can be designed as a laser bar and several
- Semiconductor component has in particular at least ten strip-shaped regions lying next to one another.
- the radiation-emitting semiconductor component is an edge emitter. This means that the radiation generated by the active region emerges on at least one side surface of the semiconductor component.
- the side surfaces limit that
- the direction of growth of the luminescence diode structure run.
- the growing direction indicates the direction in which the
- Layers of the luminescence diode structure are applied one after the other to the growth structure.
- the radiation-emitting one may be
- the component can be a surface emitter.
- the radiation generated in the active area occurs at one
- the semiconductor component is on one of the main surfaces
- Luminous diode structure limited to the outside. It is true that the radiation output that can be achieved with a surface emitter is generally lower than with one
- Edge emitter However, surface emitters often have a better beam quality.
- the use of the radiation-emitting semiconductor component decides whether it is used as a Edge emitter or is formed as a surface emitter. While edge emitters are used, for example, as pump lasers, surface emitters are used, for example, as optical transmitters for fiber optic data transmission and also for laser printers.
- FIG. 1 shows a schematic representation of a TEM image of a conventional nitride compound semiconductor based
- Figure 2 is a schematic cross-sectional representation of a
- Figure 3 is a schematic cross-sectional view of a
- Figure 4 is a schematic cross-sectional representation of a
- Radiation-emitting semiconductor component according to a second exemplary embodiment.
- Figures 1 to 4 are each schematic representations and are therefore not necessarily true to scale. Rather, comparatively small elements and in particular
- FIG. 1 shows a conventional semiconductor structure 15 based on nitride compound semiconductors.
- nitride compound semiconductors means in the present context that the active epitaxial layer sequence or at least one layer thereof comprises a nitride III / V compound semiconductor material.
- the semiconductor structure 15 has a growth structure 1 and a semiconductor layer sequence 17 grown thereon.
- the growth structure 1 comprises a semiconductor substrate 2 and an ELOG (“Epitaxial Lateral”)
- Overgrowth masking layer 16 applied to the
- the ELOG masking layer 16 is to reduce the
- the masking layer 16 is made of SiN, while the semiconductor substrate 2 is made of sapphire.
- the ELOG masking layer 16 has a plurality of
- the growth structure 1 has one of the
- Semiconductor layer sequence 17 facing side compared to semiconductor substrate 2 has a reduced dislocation density.
- Recesses in the ELOG masking layer 16, for example due to photolithographic structuring, are comparatively complex.
- Figure 2 shows a comparative example of radiation
- emitting semiconductor device 10 comprises a
- Luminescence diode structure 11 which is used to generate
- Radiation preferably in the infrared range, is provided.
- the growth structure 1 has a semiconductor substrate 2 made of GaAs with a comparatively high dislocation density. To reduce the dislocation density, the
- Growth structure 1 a buffer layer 4, which is on the
- Luminescence diode structure 11 is grown.
- the buffer layer 4 is an n-doped layer made of GaAs which is free of oxygen.
- tellurium is used here as the n-dopant.
- the luminescence diode structure 11 is deposited on the growth structure 1.
- the luminescence diode structure 11 contains materials based on arsenide compound semiconductors.
- Luminescence diode structure 11 has a first, n-conducting
- Area 12 which is followed in a growth direction A by an active area 13 for generating radiation.
- a second, p-conductive region 14 follows the active region 13 in the growth direction A.
- the buffer layer 4 contained in the growth structure 1 can be formed largely without dislocations.
- the buffer layer 4 cannot sufficiently prevent the during the growth of the
- dislocation lines 7 extend from the semiconductor substrate 2 through the first region 12 and the active region 13 to the second region 14 and thereby reduce the dislocation lines 7
- the radiation-emitting semiconductor component 10 shown in FIG. 3 has a growth structure 1 and a luminescence diode structure 11 arranged thereon for generating radiation.
- the growth structure 1 is a
- the semiconductor substrate 2 forms, in particular, a growth substrate that is used both for growing the
- Luminescence diode structure 11 is suitable. Furthermore, the semiconductor substrate 2 advantageously forms a self-supporting, stable base body and can in the finished radiation
- the semiconductor substrate 2 can be removed or at least thinned and, for example, replaced by another carrier.
- Both the semiconductor substrate 2 and the buffer structure 3 are formed from materials based on arsenide compound semiconductors.
- the semiconductor substrate 2 is preferably made of GaAs.
- the luminescence diode structure 11 can also contain materials based on arsenide compound semiconductors.
- the luminescence diode structure 11 can contain materials that are based on phosphide compound semiconductors.
- Luminescence diode structures 3, 11 are, for example, MOCVD
- the buffer structure 3 consists of a buffer layer 4, which a
- the buffer layer 4 comprises several n-doped, oxygen-free layers 6 and several n-doped, oxygen-containing layers 5, which are shown in FIG.
- a particularly suitable material system for the oxygen-containing layers 5 is AlGaAsO. Where is a
- the mole fraction of oxygen is greater than 10 15 cnr 3 and at most 10 19 cm -3. More preferably, the mole fraction of oxygen is in the n-doped layers 5 between 10 and 17 cnr 3 10 18 cm -3. In other words, the mole fraction can be at least 100 ppm and at most 20,000 ppm.
- GaAs is particularly suitable for the oxygen-free layers 6. Deviations of up to 10% are in the specified
- n-dopant can be used in each case for doping these layers in both oxygen-containing and oxygen-free layers 6, 5.
- the oxygen-free layers 6 are preferably with a thickness Dl between inclusive
- nm 0.5 nm, preferably 2 nm, and 10 nm inclusive
- the luminescence diode structure 11 has a first region 12 of a first conductivity type, a second region 14 of a second conductivity type and an active region 13 arranged between the first and second regions 14 for generating radiation.
- the first region 12 is preferably an n-conducting region and the second region is a p-conducting region 14.
- the first area 12 is on one of the first area 12
- the side of the active region 13 facing the growth structure 1 is arranged, while the second region 14 is located on a side of the active region 13 facing away from the growth structure 1.
- Semiconductor substrate 2 dislocation lines 7 which extend into the buffer structure 3 or buffer layer 4.
- the dislocation lines 7 are largely bent by means of the buffer structure 3 or buffer layer 4, so that they do not migrate further into the luminescence diode structure 11.
- the inventors have found that, in particular, the oxygen used in the n-doped layers 5 causes the dislocation lines to bend, so that these mostly do not enter the
- Luminous diode structure 11 can advance.
- a buffer structure 3 which does not consist of only one buffer layer 4, as in the exemplary embodiment shown, but has at least one further buffer layer (not shown).
- a further buffer layer can be arranged on a side of the buffer layer 4 facing the semiconductor substrate 2 or on a side of the buffer layer 4 facing away from the semiconductor substrate 2.
- the at least one further buffer layer can contain GaAs, be free of oxygen and, moreover, be n-doped. For example, tellurium can be used as the n-type dopant. It is also conceivable that the at least one further buffer layer as a “bulk layer” with the
- the radiation-emitting semiconductor component 10 is designed as a laser diode, which in particular emits radiation in the
- Luminescence diode structure run.
- the growth direction A indicates the direction in which the areas 12, 13, 14 of the luminescent diode structure 11 successively on the
- the radiation-emitting component 10 is a high-power laser diode that has a
- Radiation-emitting semiconductor component 10 has a structure similar to that shown in FIG.
- the radiation-emitting semiconductor component 10 comprises a growth structure 1 and one arranged thereon
- Luminescence diode structure 11 for generating radiation can contain materials based on arsenide compound semiconductors. Alternatively, the
- Luminous diode structure 11 can be formed from materials based on phosphide compound semiconductors.
- the growth structure 1 comprises a semiconductor substrate 2, preferably a GaAs substrate, and a buffer structure 3, which in particular is grown on the semiconductor substrate 2.
- the buffer structure 3 has a first buffer layer 4, which consists of an n-doped, oxygen-containing layer 5.
- the buffer layer 4 has AlGaAs as a material system to which oxygen has been added.
- the buffer layer 4 is thus formed from AlGaAsO.
- the buffer layer 4 is a so-called “bulk layer”. In other words, the buffer layer 4 is largely homogeneous, that is to say only off a single material system, and made comparatively thick or stable.
- the buffer structure 3 has two further buffer layers 8, 9, between which the first buffer layer 4 is arranged.
- the first buffer layer 4 can be made comparatively thin with a thickness D of approximately 10 nm.
- the second and third buffer layers 8, 9 can each contain GaAs and be n-doped, with tellurium, for example, being used as the n-dopant. In particular, they are
- Buffer layers 8, 9 free of oxygen.
- the second and third buffer layers 8, 9 can each consist of a superlattice, as in connection with the one in FIG.
- the buffer structure 3 has only one further buffer layer, which is on one of the
- Semiconductor substrate 2 facing or facing away from the first buffer layer 4 is arranged.
- the buffer structure 3 may consist only of the buffer layer 4.
- the buffer layer 4 is made comparatively thick with a preferred thickness D between 50 nm and 150 nm inclusive, deviations of up to 10% being tolerable.
- the radiation-emitting component 10 is preferably an edge-emitting laser diode with those already described in connection with FIG.
- emitting semiconductor component 10 also by a act surface-emitting laser diode, in which the
- Luminescence diode structures 11 are improved, so that fewer failures occur in the semiconductor components 10 and the operating time can be extended.
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Abstract
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/435,321 US12324275B2 (en) | 2019-03-14 | 2020-02-21 | Growth structure for a radiation-emitting semiconductor component, and radiation-emitting semiconductor component |
| CN202080017652.XA CN113490996B (zh) | 2019-03-14 | 2020-02-21 | 用于发射辐射的半导体器件的生长结构和发射辐射的半导体器件 |
| DE112020001226.3T DE112020001226B4 (de) | 2019-03-14 | 2020-02-21 | Aufwachsstruktur für ein Strahlung emittierendes Halbleiterbauelement und Strahlung emittierendes Halbleiterbauelement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019106521.6A DE102019106521A1 (de) | 2019-03-14 | 2019-03-14 | Aufwachsstruktur für ein Strahlung emittierendes Halbleiterbauelement und Strahlung emittierendes Halbleiterbauelement |
| DE102019106521.6 | 2019-03-14 |
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| Publication Number | Publication Date |
|---|---|
| WO2020182444A1 true WO2020182444A1 (de) | 2020-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/EP2020/054648 Ceased WO2020182444A1 (de) | 2019-03-14 | 2020-02-21 | Aufwachsstruktur für ein strahlung emittierendes halbleiterbauelement und strahlung emittierendes halbleiterbauelement |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12324275B2 (de) |
| CN (1) | CN113490996B (de) |
| DE (2) | DE102019106521A1 (de) |
| WO (1) | WO2020182444A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4246555A1 (de) * | 2022-03-18 | 2023-09-20 | Sensor Electronic Technology, Inc. | Halbleiterstruktur und halbleiterbauelement mit alternierenden halbleiterschichten |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5239550A (en) * | 1991-12-03 | 1993-08-24 | University Of Connecticut | Transistor lasers |
| US6355951B1 (en) * | 1997-07-24 | 2002-03-12 | Mitsubishi Denki Kabushiki Kaisha | Field effect semiconductor device |
| US20060255367A1 (en) * | 2003-04-28 | 2006-11-16 | Sumitomo Chemical Company, Limited | Compound semiconductor epitaxial substrate |
| US20080080580A1 (en) * | 2006-10-03 | 2008-04-03 | Matsushita Electric Industrial Co., Ltd. | Two-wavelength semiconductor laser device and method for fabricating the same |
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| JPH02194651A (ja) * | 1989-01-24 | 1990-08-01 | Nippon Telegr & Teleph Corp <Ntt> | 複合半導体基板 |
| JP3653408B2 (ja) * | 1999-01-21 | 2005-05-25 | シャープ株式会社 | 半導体発光素子の製造方法 |
| JP4038046B2 (ja) * | 2001-12-18 | 2008-01-23 | シャープ株式会社 | 半導体レーザ装置の製造方法 |
| JP2004193330A (ja) * | 2002-12-11 | 2004-07-08 | Sharp Corp | モノリシック多波長レーザ素子とその製法 |
| KR100674835B1 (ko) * | 2005-02-28 | 2007-01-26 | 삼성전기주식회사 | 다파장 반도체 레이저 제조방법 |
| JP2007287738A (ja) * | 2006-04-12 | 2007-11-01 | Sharp Corp | 半導体レーザ装置およびその製造方法、ならびに該半導体レーザ装置を用いた光伝送モジュールおよび光ディスク装置 |
| DE102008019268A1 (de) * | 2008-02-29 | 2009-09-03 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zur Herstellung eines optoelektronischen Bauelements |
| DE102008030584A1 (de) | 2008-06-27 | 2009-12-31 | Osram Opto Semiconductors Gmbh | Verfahren zur Herstellung eines optoelektronischen Bauelementes und optoelektronisches Bauelement |
| US7953134B2 (en) * | 2008-12-31 | 2011-05-31 | Epistar Corporation | Semiconductor light-emitting device |
| DE102011114380A1 (de) * | 2011-09-23 | 2013-03-28 | Osram Opto Semiconductors Gmbh | Strahlungsemittierender Halbleiterchip |
| US9640389B2 (en) * | 2014-06-17 | 2017-05-02 | Brolis Semiconductors Ltd. | High-mobility semiconductor heterostructures |
| CN106025026B (zh) * | 2016-07-15 | 2018-06-19 | 厦门乾照光电股份有限公司 | 一种用于发光二极管的AlN缓冲层及其制作方法 |
| US20180033912A1 (en) * | 2016-07-28 | 2018-02-01 | Lumileds Llc | Iii-p light emitting device with a superlattice |
| TWI606604B (zh) * | 2016-12-08 | 2017-11-21 | 錼創科技股份有限公司 | 發光二極體晶片 |
| JP2020001245A (ja) * | 2018-06-27 | 2020-01-09 | キヤノン株式会社 | 画像形成装置 |
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2019
- 2019-03-14 DE DE102019106521.6A patent/DE102019106521A1/de not_active Withdrawn
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2020
- 2020-02-21 CN CN202080017652.XA patent/CN113490996B/zh active Active
- 2020-02-21 WO PCT/EP2020/054648 patent/WO2020182444A1/de not_active Ceased
- 2020-02-21 US US17/435,321 patent/US12324275B2/en active Active
- 2020-02-21 DE DE112020001226.3T patent/DE112020001226B4/de active Active
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| US5239550A (en) * | 1991-12-03 | 1993-08-24 | University Of Connecticut | Transistor lasers |
| US6355951B1 (en) * | 1997-07-24 | 2002-03-12 | Mitsubishi Denki Kabushiki Kaisha | Field effect semiconductor device |
| US20060255367A1 (en) * | 2003-04-28 | 2006-11-16 | Sumitomo Chemical Company, Limited | Compound semiconductor epitaxial substrate |
| US20080080580A1 (en) * | 2006-10-03 | 2008-04-03 | Matsushita Electric Industrial Co., Ltd. | Two-wavelength semiconductor laser device and method for fabricating the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE112020001226B4 (de) | 2025-09-04 |
| US20220131033A1 (en) | 2022-04-28 |
| CN113490996B (zh) | 2024-06-25 |
| DE112020001226A5 (de) | 2021-11-25 |
| US12324275B2 (en) | 2025-06-03 |
| CN113490996A (zh) | 2021-10-08 |
| DE102019106521A1 (de) | 2020-09-17 |
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