CN109286129A - Coffee ring laser containing silver selenide/silver selenide zinc core-shell quantum dots and preparation method thereof - Google Patents
Coffee ring laser containing silver selenide/silver selenide zinc core-shell quantum dots and preparation method thereof Download PDFInfo
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- CN109286129A CN109286129A CN201811193794.2A CN201811193794A CN109286129A CN 109286129 A CN109286129 A CN 109286129A CN 201811193794 A CN201811193794 A CN 201811193794A CN 109286129 A CN109286129 A CN 109286129A
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- silver
- selenide
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- KDSXXMBJKHQCAA-UHFFFAOYSA-N disilver;selenium(2-) Chemical compound [Se-2].[Ag+].[Ag+] KDSXXMBJKHQCAA-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000002096 quantum dot Substances 0.000 title claims abstract description 73
- 239000011258 core-shell material Substances 0.000 title claims abstract description 53
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000011701 zinc Substances 0.000 title claims abstract description 40
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 21
- 239000010453 quartz Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 21
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000002243 precursor Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims description 2
- BSWGGJHLVUUXTL-UHFFFAOYSA-N silver zinc Chemical group [Zn].[Ag] BSWGGJHLVUUXTL-UHFFFAOYSA-N 0.000 claims 15
- QTEVYKMUKYTEAF-UHFFFAOYSA-N [Se-2].[Zn+2].[Ag+] Chemical compound [Se-2].[Zn+2].[Ag+] QTEVYKMUKYTEAF-UHFFFAOYSA-N 0.000 claims 3
- 239000000956 alloy Substances 0.000 claims 3
- 229910045601 alloy Inorganic materials 0.000 claims 3
- 238000002513 implantation Methods 0.000 claims 2
- KRRRBSZQCHDZMP-UHFFFAOYSA-N selanylidenesilver Chemical class [Ag]=[Se] KRRRBSZQCHDZMP-UHFFFAOYSA-N 0.000 claims 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 1
- 229910000062 azane Inorganic materials 0.000 claims 1
- ONVGIJBNBDUBCM-UHFFFAOYSA-N silver;silver Chemical compound [Ag].[Ag+] ONVGIJBNBDUBCM-UHFFFAOYSA-N 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 abstract description 9
- 150000003839 salts Chemical class 0.000 abstract description 6
- 238000005036 potential barrier Methods 0.000 abstract description 5
- 238000002161 passivation Methods 0.000 abstract description 4
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000011257 shell material Substances 0.000 description 11
- 235000002639 sodium chloride Nutrition 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 101100063942 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) dot-1 gene Proteins 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 231100001231 less toxic Toxicity 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000011503 in vivo imaging Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- GGYFMLJDMAMTAB-UHFFFAOYSA-N selanylidenelead Chemical compound [Pb]=[Se] GGYFMLJDMAMTAB-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- 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
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/1042—Optical microcavities, e.g. cavity dimensions comparable to the wavelength
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Silicon Compounds (AREA)
Abstract
Silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser and preparation method thereof is included the invention discloses a kind of, which includes the quartz base plate being arranged upwards in turn, includes silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus.The present invention substitutes the lead salt quantum dot of the minimum weight of quantum state 8 degeneracy using the silver selenide quantum dot of the 2 weight degeneracy of minimum quantum state of low toxicity, to realize the near infrared light gain of Low threshold, by coating the silver selenide kirsite shell that Zn-ef ficiency content gradually increases from inside to outside in silver selenide quantum dot surface, it constructs the surface of gentle interface potential barrier and passivation silver selenide quantum dot, gain of light threshold value can be further decreased.Quantum dot is embedded in stability and the service life that can be improved laser in silica.Coffee ring is prepared with the mixed liquor of silver selenide/selenizing silver-colored zinc core-shell quanta dots and Perhydropolysilazane, can finally obtain Low threshold, high stability and environmental-friendly coffee ring near-infrared quantum dot laser.
Description
Technical field
Silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser and its preparation side are included the present invention relates to a kind of
Method belongs to the technical field of semiconductor photoelectronic device.
Background technique
Near infrared laser can be widely applied to the fields such as optic communication, remote sensing and the generation of relevant plasma.The amount of benefiting from
Sub- confinement effect, semiconductor-quantum-point has shown a variety of superior performances as optical gain material, such as launch wavelength is with ruler
The laser activity of very little adjustable, potential low laser threshold and temperature-insensitive.Currently, utilizing the close red of molecular beam epitaxy preparation
Outer quantum dot laser has begun business application.Compared to the quantum dot of epitaxial growth, Colloidal Quantum Dots have smaller ruler
Very little and more uniform size distribution, thus there is stronger quantum confined effect and narrower emission peak.The most common near-infrared
Emitting Colloidal Quantum Dots is lead salt (vulcanized lead, lead selenide and lead telluride) quantum dot.They are rock-salt type structure, in Brillouin zone
L point have 4 equivalent energy band minimum values.Considering that 2 spin degeneracy again, the minimum quantum state of lead salt quantum dot is 8 weight degeneracys,
Exciton number in average each quantum dot will be more than 4 to be just able to achieve population inversion.This makes the gain of light threshold value of lead salt quantum dot
It is high, it is difficult to realize the gain of light.Currently, there is an urgent need to search out the novel Colloidal Quantum Dots of one kind to realize the close red of Low threshold
The outer gain of light.
In recent years, the silver selenide quantum dot of less toxic 2 weight degeneracy of minimum quantum state in the second infrared window due to having
Excellent photoluminescent property and cause strong concern.At present about the research of silver selenide quantum dot focus on mostly preparation method with
And in-vivo imaging, it is not yet had been reported that in the potential application of laser field.
Only replace lead salt quantum dot that can't obtain optimal near infrared light gain with silver selenide quantum dot.In colloid amount
Auger recombination is very efficient in son point, this makes the gain of light threshold value of Colloidal Quantum Dots be higher than the quantum dot of epitaxial growth, hinders
The development of Colloidal Quantum Dots laser.
Coffee ring quantum dot laser be it is a kind of it is novel, preparation process is simple and supports the laser of single-mode output.Currently,
Coffee ring quantum dot laser is as made from being added on quartz base plate the toluene dispersant liquid drop of a droplet quantum dot mostly.
The evaporation dynamics of drop will be left a well-defined micron-scale by the domination of coffee ring effect in substrate after evaporation
Annulus.This annulus is made of the quantum dot of dense accumulation, and the refractive index cataclysm of its boundary will bring very strong light anti-
Feedback, the section constitution Fabry-Perot-type cavity of annulus, light field vibrate and amplify between the inner and outer boundary of annulus.However, directly will amount
Son point exposure can reduce stability and the service life of laser in air.
Summary of the invention
The object of the present invention is to provide it is a kind of include silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser and its
Preparation method, to obtain Low threshold, high stability and environmental-friendly coffee ring near-infrared quantum dot laser.
To achieve the above object, the technical solution adopted by the present invention are as follows:
It is a kind of to include silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser, including the stone being arranged upwards in turn
English substrate includes silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus.
Silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus that includes should by silica annulus and insertion
Silver selenide/selenizing silver-colored zinc core-shell quanta dots composition in silica annulus.
The silver selenide/selenizing silver-colored zinc core-shell quanta dots are uniformly distributed in silica annulus.
The silver selenide/selenizing silver-colored zinc core-shell quanta dots are by silver selenide quantum dot and are coated on the silver selenide quantum dot table
The silver selenide kirsite shell in face forms.
The Zn-ef ficiency content of the silver selenide kirsite shell gradually increases from inside to outside.
The silver selenide/selenizing silver-colored zinc core-shell quanta dots are as optical gain medium.
A kind of preparation method including silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser, including following step
It is rapid:
(1) silver selenide quantum dot is prepared using high temperature thermal decomposition method；
(2) SILAR method is utilized, by being gradually reduced the injection rate of silver ion precursor while increasing
The injection rate of zincification ion precursor, in the selenium that silver selenide quantum dot surface cladding Zn-ef ficiency content gradually increases from inside to outside
Change silver-colored zinc alloy shell, obtains silver selenide/selenizing silver-colored zinc core-shell quanta dots；
(3) it disperses silver selenide/selenizing silver-colored zinc core-shell quanta dots that step (2) obtains in toluene, then by silver selenide/selenium
The toluene dispersion liquid for changing silver-colored zinc core-shell quanta dots is mixed with Perhydropolysilazane, is then added drop-wise on quartz base plate to be included
Silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus.
The utility model has the advantages that
Silver selenide quantum dot is rectangle crystal phase, and minimum quantum state only has 2 to spin again degeneracy, can be realized the close red of Low threshold
The outer gain of light.Research shows that interface potential barrier gentle between core and shell material can make Auger rate reduce 3 orders of magnitude or more, subtract
Few boundary defect can also significantly inhibit auger recombination.Therefore, if silver selenide quantum dot surface coat Zn-ef ficiency content from it is interior to
The silver selenide kirsite shell gradually increased outside can to construct the surface of gentle interface potential barrier and passivation silver selenide quantum dot
Auger recombination is inhibited to further decrease gain of light threshold value.
Quantum dot is embedded in silica to be able to solve, quantum dot exposure directly can be reduced into laser in air
The problem of stability and service life.Perhydropolysilazane is a kind of novel coating material, can be at room temperature in atmospheric atmosphere
It is converted into inorganic silicon dioxide.Preparing coffee ring with the mixed liquor of quantum dot and Perhydropolysilazane can obtain in high quality
Silica annulus containing quantum dot, to improve stability and the service life of coffee ring quantum dot laser.
The present invention substitutes the heavy degeneracy of minimum quantum state 8 using the silver selenide quantum dot of the 2 weight degeneracy of minimum quantum state of low toxicity
Lead salt quantum dot, to realize the near infrared light gain of Low threshold, by silver selenide quantum dot surface coat Zn-ef ficiency content
The silver selenide kirsite shell gradually increased from inside to outside, to construct the table of gentle interface potential barrier and passivation silver selenide quantum dot
Face can further decrease gain of light threshold value.Quantum dot is embedded in stability and the longevity that can be improved laser in silica
Life.Coffee ring is prepared with the mixed liquor of silver selenide/selenizing silver-colored zinc core-shell quanta dots and Perhydropolysilazane, can finally be obtained low
Threshold value, high stability and environmental-friendly coffee ring near-infrared quantum dot laser.
Detailed description of the invention
Fig. 1 is silver selenide/selenizing silver-colored zinc core-shell quanta dots structural schematic diagram；
Fig. 2 is the structural schematic diagram for including silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser.
In figure: 1- silver selenide quantum dot, 2- silver selenide kirsite shell, 3- quartz base plate, 4- include silver selenide/selenizing silver-colored zinc
The silica annulus of core-shell quanta dots.
Specific embodiment
Further explanation is done to the present invention with reference to the accompanying drawing.
Silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser is included as shown in Fig. 2, of the invention, including according to
The secondary quartz base plate 3 set up includes silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus 4.
Include silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus 4 by silica annulus and be embedded in this two
Silver selenide/selenizing silver-colored zinc core-shell quanta dots composition in silica annulus.Silver selenide/selenizing silver-colored zinc core-shell quanta dots are in titanium dioxide
It is uniformly distributed in silicon annulus.As shown in Figure 1, silver selenide/selenizing silver-colored zinc core-shell quanta dots by silver selenide quantum dot 1 and are coated on
The silver selenide kirsite shell 2 on 1 surface of silver selenide quantum dot forms.The Zn-ef ficiency content of silver selenide kirsite shell 2 is from inside to outside
It gradually increases.Silver selenide/selenizing silver-colored zinc core-shell quanta dots are optical gain mediums, and less toxic minimum quantum state only has 2 spin letters again
And silver selenide quantum dot 1, can be realized the near infrared light gain of Low threshold, by 1 surface of silver selenide quantum dot coat zinc
The silver selenide kirsite shell 2 that constituent content gradually increases from inside to outside, to construct gentle interface potential barrier and passivation selenizing silver content
The surface of son point 1, can further decrease gain of light threshold value.Silver selenide/selenizing silver-colored zinc core-shell quanta dots are embedded in silica
In can be improved stability and the service life of coffee ring quantum dot laser.Have benefited from including the silica ring edges of quantum dot
The refractive index cataclysm at place, light field is between the inner and outer boundary for including silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus 4
Oscillation and amplification.
The preparation method for including silver selenide/selenizing silver-colored zinc core-shell quanta dots coffee cyclic laser of the invention, including with
Lower step:
(1) the silver selenide quantum dot of near infrared emission is prepared using high temperature thermal decomposition method；
(2) utilize SILAR method, by 2 hours reaction process by concentration be 0.1 mM/
The injection rate of the silver ion precursor of milliliter gradually decreases to 0.5 ml/hour from 5 mls/hour, while being by concentration
The injection rate of the zinc ion precursor of 0.1 mM/milliliter progressively increases to 5 mls/hour from 0.5 ml/hour, 2
The silver selenide kirsite shell that micromolar silver selenide quantum dot surface cladding Zn-ef ficiency content gradually increases from inside to outside, obtains selenium
Change silver/selenizing silver-colored zinc core-shell quanta dots；
(3) it disperses silver selenide/selenizing silver-colored zinc core-shell quanta dots that step (2) obtains in toluene by the mass ratio of 1:5,
Silver selenide/selenizing silver-colored zinc core-shell quanta dots toluene dispersion liquid is mixed with Perhydropolysilazane by the mass ratio of 1:1 again, then
It is added drop-wise on quartz base plate to obtain and includes silver selenide/selenizing silver-colored zinc core-shell quanta dots silica annulus.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811193794.2A CN109286129A (en) | 2018-10-15 | 2018-10-15 | Coffee ring laser containing silver selenide/silver selenide zinc core-shell quantum dots and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811193794.2A CN109286129A (en) | 2018-10-15 | 2018-10-15 | Coffee ring laser containing silver selenide/silver selenide zinc core-shell quantum dots and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109286129A true CN109286129A (en) | 2019-01-29 |
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| CN201811193794.2A Pending CN109286129A (en) | 2018-10-15 | 2018-10-15 | Coffee ring laser containing silver selenide/silver selenide zinc core-shell quantum dots and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819349A (en) * | 2019-11-06 | 2020-02-21 | 上海南麟电子股份有限公司 | Silver selenide/silver selenide sulfide core-shell quantum dot, electro-optic modulator and preparation method |
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|---|---|---|---|---|
| CN102718180A (en) * | 2012-06-28 | 2012-10-10 | 中国科学院苏州纳米技术与纳米仿生研究所 | Concentric ring core nano silicon micro-disk micro-cavity device and preparation method thereof |
| CN106199789A (en) * | 2015-07-22 | 2016-12-07 | 宁波激智科技股份有限公司 | A kind of prism film of stimulated luminescence |
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2018
- 2018-10-15 CN CN201811193794.2A patent/CN109286129A/en active Pending
Patent Citations (2)
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|---|---|---|---|---|
| CN102718180A (en) * | 2012-06-28 | 2012-10-10 | 中国科学院苏州纳米技术与纳米仿生研究所 | Concentric ring core nano silicon micro-disk micro-cavity device and preparation method thereof |
| CN106199789A (en) * | 2015-07-22 | 2016-12-07 | 宁波激智科技股份有限公司 | A kind of prism film of stimulated luminescence |
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|---|---|---|---|---|
| CN110819349A (en) * | 2019-11-06 | 2020-02-21 | 上海南麟电子股份有限公司 | Silver selenide/silver selenide sulfide core-shell quantum dot, electro-optic modulator and preparation method |
| CN110819349B (en) * | 2019-11-06 | 2020-08-11 | 上海南麟电子股份有限公司 | Silver selenide/silver selenide sulfide core-shell quantum dot, electro-optic modulator and preparation method |
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Application publication date: 20190129 |