CN208723311U - The VCSEL chip and electronic device to prolong the service life - Google Patents
The VCSEL chip and electronic device to prolong the service life Download PDFInfo
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- CN208723311U CN208723311U CN201821785469.0U CN201821785469U CN208723311U CN 208723311 U CN208723311 U CN 208723311U CN 201821785469 U CN201821785469 U CN 201821785469U CN 208723311 U CN208723311 U CN 208723311U
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- layer
- multilayer film
- reflective mirror
- semiconductor multilayer
- film reflective
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- 239000004065 semiconductor Substances 0.000 claims abstract description 90
- 239000000758 substrate Substances 0.000 claims abstract description 47
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 25
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 claims description 10
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 10
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 6
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
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- Semiconductor Lasers (AREA)
Abstract
The utility model discloses a kind of VCSEL chips and electronic device to prolong the service life; the second semiconductor multilayer film reflective mirror is formed with away from one side of substrate in multiple quantum well active layer; to stop limiting layer and multiple quantum well active layer to be in contact by the second semiconductor multilayer film reflective mirror; and then it can protect multiple quantum well active layer not by moisture attacks by the second semiconductor multilayer film reflective mirror when forming the oxidation structure of limiting layer；The case where the second semiconductor multilayer film reflective mirror can play the role of buffer oxide structural stress simultaneously, avoid under generating hot conditions when using VCSEL chip, and the stress that oxidation structure generates damages multiple quantum well active layer appearance；Also, the second semiconductor multilayer film reflective mirror can also the impurity in barrier oxidation structure extend to multiple quantum well active layer, guarantee that the service life of VCSEL chip is higher.
Description
Technical field
The utility model relates to technical field of semiconductors, more specifically, are related to a kind of VCSEL to prolong the service life
Chip and electronic device.
Background technique
Vertical cavity surface emitting laser (Vertical Cavity Surface Emitting Laser) chip, also known as
VCSEL chip is the Laser emission chip based on gallium arsenide semiconductor material, has small in size, round output facula, list
Longitudinal mode output, threshold current it is small, cheap, easy of integration be large area array the advantages that, be widely applied it is mutual with optic communication, light
The fields such as company, optical storage.
The cross-section structure of VCSEL chip in the prior art refers to Fig. 1, mainly including gallium arsenide substrate 10 and positioned at arsenic
N-type DBR (Distributed Bragg Reflection, the distributed bragg reflector mirror) layer stacked gradually on gallium substrate 10
20, multiple quantum well active layer 30, limiting layer 40, p-type DBR layer 50, gaas contact layer 60 and p-side electrode structure 70, and arsenic
10 back side of gallium substrate is formed with n-side electrode 80.Wherein, limiting layer 40 includes conductive structure 41 and the oxidation around conductive structure 41
Structure 42, to play convergence electric current, to form the purpose of excitation laser in Bulk current injection multiple quantum well active layer 30；Electrode
Structure 70 defines exit window region 71, which is the output optical zone domain of VCSEL chip, existing
VCSEL chip service life is lower.
Utility model content
In view of this, the present invention provides a kind of VCSEL chips and electronic device to prolong the service life, effectively
Solve the problems, such as that existing VCSEL chip service life is lower.
To achieve the above object, the technical scheme that the utility model is provided is as follows:
A kind of VCSEL chip to prolong the service life, comprising:
Substrate；
The first semiconductor multilayer film reflective mirror in the substrate face；
Deviate from the multiple quantum well active layer of the one side of substrate positioned at first semiconductor multilayer film reflective mirror；
Deviate from the second semiconductor multilayer film reflective mirror of the one side of substrate positioned at the multiple quantum well active layer；
Deviate from the limiting layer of the one side of substrate positioned at second semiconductor multilayer film reflective mirror, the limiting layer includes
Conductive structure and the oxidation structure for surrounding the conductive structure；
Deviate from the third semiconductor multilayer film reflective mirror of the one side of substrate, the third semiconductor positioned at the limiting layer
Multi-layer mirror is identical as the doping type of second semiconductor multilayer film reflective mirror, and with first multichip semiconductor
The doping type of tunic reflecting mirror is opposite；
Deviate from the ohmic contact layer of the one side of substrate positioned at the third semiconductor multilayer film reflective mirror；
And deviate from the first electrode of the one side of substrate positioned at the ohmic contact layer, and be located at the substrate back
On second electrode.
Optionally, first semiconductor multilayer film reflective mirror, second semiconductor multilayer film reflective mirror and described
Three semiconductor multilayer film reflective mirrors are DBR reflecting mirror.
Optionally, first semiconductor multilayer film reflective mirror includes multiple first reflecting layer of superposition, and described first is anti-
Penetrating layer includes the AlAs layer being sequentially overlapped and AlGaAs layers.
Optionally, second semiconductor multilayer film reflective mirror includes multiple second reflecting layer of superposition, and described second is anti-
Penetrating layer includes the AlAs layer being sequentially overlapped and AlGaAs layers.
Optionally, the third semiconductor multilayer film reflective mirror includes multiple third reflecting layer of superposition, and the third is anti-
Penetrating layer includes the AlAs layer being sequentially overlapped and AlGaAs layers.
Optionally, it is anti-to be greater than second semiconductor multi layer film for the film layer quantity of the third semiconductor multilayer film reflective mirror
Penetrate the film layer quantity of mirror.
Optionally, first semiconductor multilayer film reflective mirror is N-type multi-layer mirror；
And second semiconductor multilayer film reflective mirror and the third semiconductor multilayer film reflective mirror are that p-type is more
Tunic reflecting mirror.
Correspondingly, the utility model additionally provides a kind of electronic device, the electronic device includes that above-mentioned extension uses
The VCSEL chip in service life.
Compared to the prior art, technical solution provided by the utility model has at least the following advantages:
The utility model provides a kind of VCSEL chip and electronic device to prolong the service life, active in multiple quantum wells
Layer is formed with the second semiconductor multilayer film reflective mirror away from one side of substrate, to stop limit by the second semiconductor multilayer film reflective mirror
Preparative layer and multiple quantum well active layer are in contact, and then can pass through the second multichip semiconductor when forming the oxidation structure of limiting layer
Tunic reflecting mirror protects multiple quantum well active layer not by moisture attacks；The second semiconductor multilayer film reflective mirror can play slow simultaneously
The effect for rushing oxidation structure stress avoids under generating hot conditions when using VCSEL chip, the stress pair that oxidation structure generates
The case where multiple quantum well active layer damages appearance；Also, the second semiconductor multilayer film reflective mirror can also barrier oxidation knot
Impurity in structure extends to multiple quantum well active layer, guarantees that the service life of VCSEL chip is higher.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of existing structural schematic diagram of VCSEL chip；
Fig. 2 is a kind of structural schematic diagram of VCSEL chip provided by the embodiments of the present application；
Fig. 3 is a kind of flow chart of the production method of VCSEL chip provided by the embodiments of the present application；
Fig. 4-Fig. 7 is the corresponding structural schematic diagram of step each in Fig. 3.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As described in background, the cross-section structure of VCSEL chip in the prior art refers to Fig. 1, mainly includes arsenic
(Distributed Bragg Reflection divides by gallium substrate 10 and the N-type DBR stacked gradually in gallium arsenide substrate 10
Cloth Bragg mirror) layer 20, multiple quantum well active layer 30, limiting layer 40, p-type DBR layer 50, gaas contact layer 60 and p
Side electrode structure 70, and 10 back side of gallium arsenide substrate is formed with n-side electrode 80.Wherein, limiting layer 40 includes 41 He of conductive structure
Around the oxidation structure 42 of conductive structure 41, to play convergence electric current, to form Bulk current injection multiple quantum well active layer 30
The purpose of middle excitation laser；Electrode structure 70 defines exit window region 71, which is VCSEL chip
Output optical zone domain, existing VCSEL chip service life is lower.
Based on this, the embodiment of the present application provides a kind of VCSEL chip to prolong the service life and production method and electronics
Device, effective solution existing VCSEL chip service life lower problem.To achieve the above object, the embodiment of the present application
The technical solution of offer is as follows, specifically Fig. 2 to Fig. 7 is combined to carry out detailed retouch to technical solution provided by the embodiments of the present application
It states.
Refering to what is shown in Fig. 2, being a kind of structural representation of the VCSEL chip to prolong the service life provided by the embodiments of the present application
Figure, wherein VCSEL chip includes:
Substrate 100；
The first semiconductor multilayer film reflective mirror 200 on 100 front of substrate；
Deviate from the multiple quantum well active layer of 100 side of substrate positioned at first semiconductor multilayer film reflective mirror 200
300；
Deviate from the second semiconductor multilayer film reflective mirror of 100 side of substrate positioned at the multiple quantum well active layer 300
400；
Deviate from the limiting layer 500 of 100 side of substrate positioned at second semiconductor multilayer film reflective mirror 400, it is described
Limiting layer 500 includes conductive structure 510 and the oxidation structure 520 around the conductive structure 510；
Deviate from the third semiconductor multilayer film reflective mirror 600 of 100 side of substrate positioned at the limiting layer 500, it is described
Third semiconductor multilayer film reflective mirror 600 is identical as the doping type of second semiconductor multilayer film reflective mirror 400, and with
The doping type of first semiconductor multilayer film reflective mirror 200 is opposite；
Deviate from the ohmic contact layer 700 of 100 side of substrate positioned at the third semiconductor multilayer film reflective mirror 600；
And deviate from the first electrode 800 of 100 side of substrate positioned at the ohmic contact layer 700, and be located at described
Second electrode 900 on 100 back side of substrate.
It is understood that technical solution provided by the embodiments of the present application, deviates from one side of substrate in multiple quantum well active layer
It is formed with the second semiconductor multilayer film reflective mirror, to stop limiting layer and multiple quantum wells by the second semiconductor multilayer film reflective mirror
Active layer is in contact, and then can be protected when forming the oxidation structure of limiting layer by the second semiconductor multilayer film reflective mirror
Multiple quantum well active layer is not by moisture attacks；The second semiconductor multilayer film reflective mirror can play buffer oxide structural stress simultaneously
Effect, avoid generating under hot conditions when using VCSEL chip, the stress that oxidation structure generates is to multiple quantum well active layer
The case where damaging appearance；Also, the second semiconductor multilayer film reflective mirror can also impurity extension in barrier oxidation structure
To multiple quantum well active layer, guarantee that the service life of VCSEL chip is higher.
Correspondingly, the embodiment of the present application also provides a kind of production method of VCSEL chip to prolong the service life, reference
It is a kind of flow chart of the production method of VCSEL chip provided by the embodiments of the present application, wherein production method packet shown in Fig. 3
It includes:
S1, a substrate is provided；
S2, be sequentially overlapped in the substrate face deposition the first semiconductor multilayer film reflective mirror, multiple quantum well active layer,
Second semiconductor multilayer film reflective mirror, limitation material layer, third semiconductor multilayer film reflective mirror and ohmic contact layer；
S3, to the limitation material layer carry out oxidation processes so that the limitation material layer formed have conductive structure with
Around the limiting layer of the oxidation structure of the conductive structure；
S4, first electrode, and the shape on the substrate back are formed away from the one side of substrate in the ohmic contact layer
At second electrode.
Technical solution provided by the embodiments of the present application is described in detail in conjunction with Fig. 4-Fig. 7.As shown in figure 4, corresponding
Step S1 provides a substrate 100.
In one embodiment of the application, substrate provided by the present application can be GaAs substrate, not do specifically to this application
Limitation.
As shown in figure 5, corresponding step S2, is sequentially overlapped the first semiconductor multi layer film of deposition on 100 front of substrate
Reflecting mirror 200, multiple quantum well active layer 300, the second semiconductor multilayer film reflective mirror 400, limitation material layer 501, third are partly led
Body multi-layer mirror 600 and ohmic contact layer 700.
In one embodiment of the application, first semiconductor multilayer film reflective mirror provided by the present application, described the second half
Conductor multi-layer mirror and the third semiconductor multilayer film reflective mirror are DBR reflecting mirror.And the embodiment of the present application mentions
The ohmic contact layer of confession can be GaAs layers.
Wherein, first semiconductor multilayer film reflective mirror provided by the embodiments of the present application includes the multiple first anti-of superposition
Layer is penetrated, first reflecting layer includes the AlAs layer being sequentially overlapped and AlGaAs layers, for the first semiconductor multilayer film reflective mirror
Material the application be not particularly limited, need specifically to be chosen according to practical application.Optionally, the embodiment of the present application provides
The quantity in the first reflecting layer can be 32, and it is with a thickness of a quarter of the outgoing light wavelength of VCSEL chip, to this this Shen
Please equally it is not particularly limited.
And second semiconductor multilayer film reflective mirror provided by the embodiments of the present application includes the multiple second anti-of superposition
Layer is penetrated, second reflecting layer includes the AlAs layer being sequentially overlapped and AlGaAs layers, for the second semiconductor multilayer film reflective mirror
Material the application be equally not particularly limited, need specifically to be chosen according to practical application.Optionally, the embodiment of the present application
The quantity in the second reflecting layer provided can be 2, and it is with a thickness of a quarter of the outgoing light wavelength of VCSEL chip, to this
The application is equally not particularly limited.
And the third semiconductor multilayer film reflective mirror provided by the embodiments of the present application include superposition multiple thirds it is anti-
Layer is penetrated, the third reflecting layer includes the AlAs layer being sequentially overlapped and AlGaAs layers, for the second semiconductor multilayer film reflective mirror
Material the application be equally not particularly limited, need specifically to be chosen according to practical application.Optionally, the embodiment of the present application
The quantity in the third reflecting layer of offer can be 18, and it is with a thickness of a quarter of the outgoing light wavelength of VCSEL chip, to this
The application is equally not particularly limited.
Since the effect of the second semiconductor multilayer film reflective mirror provided by the embodiments of the present application is to stop moisture attacks and miscellaneous
Matter and buffering stress, so, the film layer quantity of the third semiconductor multilayer film reflective mirror provided by the embodiments of the present application is greater than
The film layer quantity of second semiconductor multilayer film reflective mirror.
In one embodiment of the application, first semiconductor multilayer film reflective mirror is N-type multi-layer mirror；
And second semiconductor multilayer film reflective mirror and the third semiconductor multilayer film reflective mirror are that p-type is more
Tunic reflecting mirror.
As shown in fig. 6, corresponding step S3, carries out oxidation processes to the limitation material layer, so that the limitation material layer
Form the limiting layer 500 with conductive structure 510 and the oxidation structure 520 around the conductive structure 510.
It is provided by the present application that oxidation processes are carried out to the limiting layer are as follows: to the limitation in one embodiment of the application
Layer carries out wet oxidation process, i.e., carries out oxidation processes to limiting layer by vapor at high temperature, obtain nonconducting oxidation
Structure.
As shown in fig. 7, corresponding step S4, forms the first electricity away from 100 side of substrate in the ohmic contact layer 700
Pole 800, and second electrode 900 is formed on 100 back side of substrate.
Correspondingly, the electronic device includes above-mentioned any one reality the embodiment of the present application also provides a kind of electronic device
The VCSEL chip of example offer to prolong the service life is provided.
The embodiment of the present application provides a kind of VCSEL chip to prolong the service life and production method and electronic device,
Multiple quantum well active layer is formed with the second semiconductor multilayer film reflective mirror away from one side of substrate, to pass through the second semiconductor multi layer film
Reflective mirror blocks limiting layer and multiple quantum well active layer are in contact, and then can pass through when forming the oxidation structure of limiting layer
Second semiconductor multilayer film reflective mirror protects multiple quantum well active layer not by moisture attacks；Second semiconductor multi layer film reflection simultaneously
Mirror can play the role of buffer oxide structural stress, avoid under generating hot conditions when using VCSEL chip, oxidation structure
The case where stress of generation damages multiple quantum well active layer appearance；Also, the second semiconductor multilayer film reflective mirror can also
Impurity in enough barrier oxidation structures extends to multiple quantum well active layer, guarantees that the service life of VCSEL chip is higher.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (8)
1. a kind of VCSEL chip to prolong the service life characterized by comprising
Substrate；
The first semiconductor multilayer film reflective mirror in the substrate face；
Deviate from the multiple quantum well active layer of the one side of substrate positioned at first semiconductor multilayer film reflective mirror；
Deviate from the second semiconductor multilayer film reflective mirror of the one side of substrate positioned at the multiple quantum well active layer；
Deviate from the limiting layer of the one side of substrate positioned at second semiconductor multilayer film reflective mirror, the limiting layer includes conduction
Structure and the oxidation structure for surrounding the conductive structure；
Deviate from the third semiconductor multilayer film reflective mirror of the one side of substrate, the third multilayered semiconductor positioned at the limiting layer
Film reflecting mirror is identical as the doping type of second semiconductor multilayer film reflective mirror, and with first semiconductor multi layer film
The doping type of reflecting mirror is opposite；
Deviate from the ohmic contact layer of the one side of substrate positioned at the third semiconductor multilayer film reflective mirror；
And deviate from the first electrode of the one side of substrate positioned at the ohmic contact layer, and on the substrate back
Second electrode.
2. the VCSEL chip according to claim 1 to prolong the service life, which is characterized in that first multichip semiconductor
Tunic reflecting mirror, second semiconductor multilayer film reflective mirror and the third semiconductor multilayer film reflective mirror are DBR reflection
Mirror.
3. the VCSEL chip according to claim 2 to prolong the service life, which is characterized in that first multichip semiconductor
Tunic reflecting mirror includes multiple first reflecting layer of superposition, and first reflecting layer includes the AlAs layer and AlGaAs being sequentially overlapped
Layer.
4. the VCSEL chip according to claim 2 to prolong the service life, which is characterized in that second multichip semiconductor
Tunic reflecting mirror includes multiple second reflecting layer of superposition, and second reflecting layer includes the AlAs layer and AlGaAs being sequentially overlapped
Layer.
5. the VCSEL chip according to claim 2 to prolong the service life, which is characterized in that the third multichip semiconductor
Tunic reflecting mirror includes multiple third reflecting layer of superposition, and the third reflecting layer includes the AlAs layer and AlGaAs being sequentially overlapped
Layer.
6. the VCSEL chip according to claim 1 to prolong the service life, which is characterized in that the third multichip semiconductor
The film layer quantity of tunic reflecting mirror is greater than the film layer quantity of second semiconductor multilayer film reflective mirror.
7. the VCSEL chip according to claim 1 to prolong the service life, which is characterized in that first multichip semiconductor
Tunic reflecting mirror is N-type multi-layer mirror；
And second semiconductor multilayer film reflective mirror and the third semiconductor multilayer film reflective mirror are p-type multilayer film
Reflecting mirror.
8. a kind of electronic device, which is characterized in that the electronic device includes that extension described in claim 1-7 any one makes
With the VCSEL chip in service life.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821785469.0U CN208723311U (en) | 2018-10-31 | 2018-10-31 | The VCSEL chip and electronic device to prolong the service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821785469.0U CN208723311U (en) | 2018-10-31 | 2018-10-31 | The VCSEL chip and electronic device to prolong the service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208723311U true CN208723311U (en) | 2019-04-09 |
Family
ID=65983569
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821785469.0U Withdrawn - After Issue CN208723311U (en) | 2018-10-31 | 2018-10-31 | The VCSEL chip and electronic device to prolong the service life |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038217A (en) * | 2018-10-31 | 2018-12-18 | 厦门乾照半导体科技有限公司 | The VCSEL chip and production method and electronic device to prolong the service life |
-
2018
- 2018-10-31 CN CN201821785469.0U patent/CN208723311U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038217A (en) * | 2018-10-31 | 2018-12-18 | 厦门乾照半导体科技有限公司 | The VCSEL chip and production method and electronic device to prolong the service life |
| CN109038217B (en) * | 2018-10-31 | 2024-04-26 | 厦门乾照半导体科技有限公司 | VCSEL chip with prolonged service life, manufacturing method and electronic device |
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