CN101767816A - Method for preparing monodisperse CdS nanocrystal - Google Patents
Method for preparing monodisperse CdS nanocrystal Download PDFInfo
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- CN101767816A CN101767816A CN201010039665A CN201010039665A CN101767816A CN 101767816 A CN101767816 A CN 101767816A CN 201010039665 A CN201010039665 A CN 201010039665A CN 201010039665 A CN201010039665 A CN 201010039665A CN 101767816 A CN101767816 A CN 101767816A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002159 nanocrystal Substances 0.000 title claims abstract description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 18
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 16
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000005642 Oleic acid Substances 0.000 claims abstract description 16
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 16
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 16
- LHQLJMJLROMYRN-UHFFFAOYSA-L cadmium acetate Chemical compound [Cd+2].CC([O-])=O.CC([O-])=O LHQLJMJLROMYRN-UHFFFAOYSA-L 0.000 claims abstract description 12
- ZTSAVNXIUHXYOY-CVBJKYQLSA-L cadmium(2+);(z)-octadec-9-enoate Chemical compound [Cd+2].CCCCCCCC\C=C/CCCCCCCC([O-])=O.CCCCCCCC\C=C/CCCCCCCC([O-])=O ZTSAVNXIUHXYOY-CVBJKYQLSA-L 0.000 claims abstract description 12
- 238000000746 purification Methods 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 239000006228 supernatant Substances 0.000 claims abstract description 11
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 claims abstract description 6
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012454 non-polar solvent Substances 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 27
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 239000005864 Sulphur Substances 0.000 claims description 14
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 239000012467 final product Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 10
- -1 octadecylene Chemical group 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical group CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 abstract description 27
- 239000002096 quantum dot Substances 0.000 abstract description 2
- CJOBVZJTOIVNNF-UHFFFAOYSA-N cadmium sulfide Chemical compound [Cd]=S CJOBVZJTOIVNNF-UHFFFAOYSA-N 0.000 abstract 2
- 238000005119 centrifugation Methods 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 229940057995 liquid paraffin Drugs 0.000 abstract 1
- CCCMONHAUSKTEQ-UHFFFAOYSA-N octadecene Natural products CCCCCCCCCCCCCCCCC=C CCCMONHAUSKTEQ-UHFFFAOYSA-N 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 14
- 239000006185 dispersion Substances 0.000 description 8
- 239000002244 precipitate Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 4
- 229940116367 cadmium sulfide Drugs 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003698 anagen phase Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001661 cadmium Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical group [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The invention discloses a method for preparing monodisperse cadmium sulphide nanocrystal, comprising the following steps: (1) using cadmium acetate, oleic acid and solvent or cadmium oxide, oleic acid and solvent for preparing a cadmium oleate solution; the solvent being octadecene or liquid paraffin; (2) lowering the temperature of the cadmium oleate solution to room temperature and adding sulfur powder; (3) rising the temperature of reaction solution in step (2) to 200-300 DEG C for reaction to the end; (4) stopping heating, adding ethanol for centrifugation and purification when the temperature of the reaction solution drops to room temperature, removing supernatant fluid, dispersing the precipitation in nonpolar solvent, adding ethanol for centrifugation, and repeating the process for a plurality of times to gain the end product. The cadmium sulphide nanocrystal prepared thereby has good monodispersion and uniformity, adjustable size, excellent fluorescence, and can be used in the fields of photoelectric detection, quantum dot LEDs and the like.
Description
Technical field
The present invention relates to a kind of preparation method of monodisperse CdS nanocrystal, belong to field of semiconductor materials.
Background technology
Cadmium Sulfide is a kind of important semiconductor material, can be used for photodetector, photoelectric devices such as compound film solar cell.Along with the development of nano material and preparation of devices technology, CdS nanocrystal more and more receives publicity.When the size of CdS nanocrystal was decreased to its exciton Bohr radius (about 3nm), because quantum confined effect, it is big that the bandwidth of material becomes, and makes cadmiumsulfide quantum dot become the preferred material of blue light quantum point photodiode.When Cadmium Sulfide was used for the Window layer of compound film solar cell, the increase of bandwidth can increase its transparency at visible region, made more sunlight see through and was absorbed by the absorption layer, and was converted into electric current, thereby improved the efficient of solar cell.
At present preparing the most frequently used method of monodisperse CdS nanocrystal is hot injection method, being about to cold precursor solution is injected in the pyroreaction solvent, this process has guaranteed that the nanocrystalline forming core stage effectively separates with growth phase, thereby obtains the nanocrystalline of size homogeneous.But hot injection method requires an injection process fast, obviously can't be used for technical grade and prepare nanocrystalline.No injection method is a kind of method that is fit to prepare in a large number CdS nanocrystal, but the growth of using saturated long carbochain carboxylic acid to come the stabilized nanoscale crystalline substance in method before needs the adding forming core to trigger the reactive behavior that agent increases elemental sulfur, has increased the synthetic cost.And the high organosulfur source of reactive behavior costs an arm and a leg, and poisonous easy oxidation is so need a kind of simpler green of exploitation and can mass-produced method prepare high-quality monodisperse CdS nanocrystal.
Summary of the invention
The invention provides a kind of method for preparing monodisperse CdS nanocrystal, need not heat injection and forming core and trigger agent.
A kind of method for preparing monodisperse CdS nanocrystal comprises the steps:
(1) mixture to 100 ℃ of heating cadmium acetate, oleic acid and solvent～120 ℃ obtains water white cadmium oleate solution, vacuumizes water and acetic acid in the system of removing; Or the mixture to 200 of heated oxide cadmium, oleic acid and solvent ℃～300 ℃, insulation for some time to Cadmium oxide all dissolves, and obtains cadmium oleate solution; Cadmium acetate or Cadmium oxide and oleic mol ratio are 1: 2～1: 10; Described solvent is octadecylene or whiteruss;
(2) temperature of described cadmium oleate solution is reduced to room temperature, add the sulphur powder, the mol ratio of cadmium oleate and sulphur is 4: 1～1: 4;
(3) temperature of the reaction soln of step (2) is risen to 220 ℃～300 ℃ and react, finish to reaction;
(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, and precipitation is dispersed in the non-polar solvent, and it is centrifugal to add ethanol again, repeats these process several times (generally more than 3 times), obtains final product.
Step (1) to operating under the argon gas stream protection atmosphere of step (3) carried out, to prevent oleic acid and the oxidation of reacting the CdS nanocrystal that obtains under the high temperature.
Described non-polar solvent is hexane, hexanaphthene, toluene or chloroform etc.
The process of preparation monodisperse CdS nanocrystal of the present invention mainly is divided into two stages, at first prepares cadmium oleate solution, it is mixed with sulphur again, is warming up to temperature of reaction.Sulphur is reduced into hydrogen sulfide by solvent (octadecylene or whiteruss) in this process, and hydrogen sulfide and cadmium oleate reaction obtain Cadmium Sulfide, and reacting initial temperature is about 220 ℃.Above-mentioned reaction conditions has guaranteed the highly homogeneous successful preparation with CdS nanocrystal of quantum confined effect of size.
The pharmaceutical chemicals that uses among the present invention is all by commercially available acquisition, and is relatively inexpensive, can be stable in the air.By in reaction system, adding oleic acid, improved the reactive behavior of cadmium salt, stablize the growth of CdS nanocrystal simultaneously, thereby avoided forming core to inspire the use of agent.
Beneficial effect of the present invention is: 1) avoided forming core to inspire the use of agent, reduced synthetic cost; 2) the CdS nanocrystal size that obtains is even, and can be by changing the mol ratio between the presoma, and temperature of reaction or time are controlled, and have the big advantage of output in addition.
Description of drawings
The transmission electron microscope photo of Fig. 1 embodiment 1 CdS nanocrystal;
The absorption spectrum of Fig. 2 embodiment 1 CdS nanocrystal and fluorescent emission collection of illustrative plates;
The X ray diffracting spectrum of Fig. 3 embodiment 1 CdS nanocrystal.
Embodiment
Embodiment 1:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 6 mmoles, 15 milliliters of octadecylenes are heated to 120 ℃, vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to room temperature, add the sulphur powder of 0.5 mmole.(3) temperature with reaction soln rises to 240 ℃, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.
Fig. 1 is the transmission electron microscope photo of synthetic CdS nanocrystal, and nanocrystalline even size distribution, mean sizes are 3.6nm.
Fig. 2 is the absorption spectrum and the fluorescent emission collection of illustrative plates of CdS nanocrystal, clearly absorption peak show nanocrystalline high quality, comprise the luminous and defect luminescence of intrinsic in the fluorescence emission spectrum.
The X ray diffracting spectrum of Fig. 3 CdS nanocrystal shows that the CdS nanocrystal that obtains by present method has the cubic zinc blende structure.
Embodiment 2:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 6 mmoles, 15 milliliters of liquid heating paraffin to 120 ℃ vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to room temperature, add the sulphur powder of 0.5 mmole.(3) temperature with reaction soln rises to 240 ℃, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Embodiment 3:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 10 mmoles, 15 milliliters of octadecylenes are heated to 120 ℃, vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to about room temperature, add the sulphur powder of 0.5 mmole.(3) temperature with reaction soln rises to 240 ℃, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Embodiment 4:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 2 mmoles, 15 milliliters of octadecylenes are heated to 120 ℃, vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to room temperature, the sulphur powder (3) that adds 0.5 mmole rises to 240 ℃ with the temperature of reaction soln, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Embodiment 5:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 6 mmoles, 15 milliliters of octadecylenes are heated to 120 ℃, vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to about room temperature, add the sulphur powder of 0.5 mmole.(3) temperature with reaction soln rises to 300 ℃, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Embodiment 6:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 6 mmoles, 15 milliliters of octadecylenes are heated to 120 ℃, vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to room temperature, add the sulphur powder (3) of 0.25 mmole.The temperature of reaction soln is risen to 240 ℃, reacted 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Embodiment 7:
(1) with the cadmium acetate of 1 mmole, the oleic acid of 6 mmoles, 15 milliliters of octadecylenes are heated to 120 ℃, vacuumize acetic acid and the water removed in 30 minutes in the system, charge into argon gas then.(2) stop heating, treat that temperature reduces to room temperature, add the sulphur powder of 2 mmoles.(3) temperature with reaction soln rises to 240 ℃, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Embodiment 8:
(1) with the Cadmium oxide of 1 mmole, the oleic acid of 6 mmoles, 15 milliliters of octadecylenes are heated to 280 ℃ under argon gas, be incubated 15 minutes dissolved oxygen cadmiums.(2) stop heating, treat that temperature reduces to room temperature, add the sulphur powder of 0.5 mmole.(3) temperature with reaction soln rises to 240 ℃, reacts 1 hour.(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, will precipitate in the dispersion hexanaphthene, and it is centrifugal to add ethanol again, repeats this process 3 times, obtains final product.Its result is similar with example 1.
Claims (3)
1. a method for preparing monodisperse CdS nanocrystal comprises the steps:
(1) mixture to 100 ℃ of heating cadmium acetate, oleic acid and solvent～120 ℃ obtains cadmium oleate solution, vacuumizes water and acetic acid in the system of removing; Or the mixture to 200 of heated oxide cadmium, oleic acid and solvent ℃～300 ℃, be incubated to Cadmium oxide and all dissolve, obtain cadmium oleate solution; Cadmium acetate or Cadmium oxide and oleic mol ratio are 1: 2～1: 10;
Described solvent is octadecylene or whiteruss;
(2) temperature of described cadmium oleate solution is reduced to room temperature, add the sulphur powder, the mol ratio of cadmium oleate and sulphur is 4: 1～1: 4;
(3) temperature of the reaction soln of step (2) is risen to 220 ℃～300 ℃ and react, finish to reaction;
(4) stop heating, the question response solution temperature is reduced to room temperature, adds the centrifugal purification of ethanol, removes supernatant liquor, and precipitation is dispersed in the non-polar solvent, and it is centrifugal to add ethanol again, and repeated several times obtains final product.
2. the method for claim 1 is characterized in that: step (1) to operating under the argon gas stream protection atmosphere of step (3) carried out.
3. the method for claim 1, it is characterized in that: described non-polar solvent is hexane, hexanaphthene, toluene or chloroform.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776324A (en) * | 2014-12-15 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Preparation method for pyridine-wrapped lead-cadmium-sulfur nano particles and product of preparation method |
| CN105776316A (en) * | 2014-12-15 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Universal synthesis method for nanocrystals |
| CN106544018A (en) * | 2016-11-07 | 2017-03-29 | Tcl集团股份有限公司 | The method that second heat injection method prepares Binary-phase quantum dot |
| CN112897575A (en) * | 2019-12-03 | 2021-06-04 | 中国科学院深圳先进技术研究院 | Method and structure for forming two-dimensional cadmium sulfide on substrate in large area |
| CN112897574A (en) * | 2019-12-03 | 2021-06-04 | 中国科学院深圳先进技术研究院 | Preparation method and structure of nano-particle cadmium sulfide material |
-
2010
- 2010-01-12 CN CN201010039665A patent/CN101767816A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776324A (en) * | 2014-12-15 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Preparation method for pyridine-wrapped lead-cadmium-sulfur nano particles and product of preparation method |
| CN105776316A (en) * | 2014-12-15 | 2016-07-20 | 中国科学院宁波材料技术与工程研究所 | Universal synthesis method for nanocrystals |
| CN105776324B (en) * | 2014-12-15 | 2018-04-17 | 中国科学院宁波材料技术与工程研究所 | A kind of preparation method of lead cadmium sulphur nano particle of pyridine parcel and products thereof |
| CN106544018A (en) * | 2016-11-07 | 2017-03-29 | Tcl集团股份有限公司 | The method that second heat injection method prepares Binary-phase quantum dot |
| CN106544018B (en) * | 2016-11-07 | 2019-12-03 | Tcl集团股份有限公司 | The method that second heat injection method prepares Binary-phase quantum dot |
| CN112897575A (en) * | 2019-12-03 | 2021-06-04 | 中国科学院深圳先进技术研究院 | Method and structure for forming two-dimensional cadmium sulfide on substrate in large area |
| CN112897574A (en) * | 2019-12-03 | 2021-06-04 | 中国科学院深圳先进技术研究院 | Preparation method and structure of nano-particle cadmium sulfide material |
| WO2021109829A1 (en) * | 2019-12-03 | 2021-06-10 | 中国科学院深圳先进技术研究院 | Preparation method for and structure of nano-particle cadmium sulfide material |
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