CN112222422A - Controllable preparation method of rhodium nanocubes and method for ultraviolet laser modification of semiconductor by using rhodium nanocubes - Google Patents

Controllable preparation method of rhodium nanocubes and method for ultraviolet laser modification of semiconductor by using rhodium nanocubes Download PDF

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CN112222422A
CN112222422A CN202011109842.2A CN202011109842A CN112222422A CN 112222422 A CN112222422 A CN 112222422A CN 202011109842 A CN202011109842 A CN 202011109842A CN 112222422 A CN112222422 A CN 112222422A
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rhodium
rhncs
solution
nanocube
rhcl
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徐海英
缪长宗
姜明明
阚彩侠
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Nanjing Institute of Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
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    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B22F1/0553—Complex form nanoparticles, e.g. prism, pyramid, octahedron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
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    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7701—Chalogenides
    • C09K11/7702—Chalogenides with zinc or cadmium

Abstract

The invention discloses a controllable preparation method of a rhodium nanocube, which comprises the following steps: s01, preparing an ethylene glycol solution with the potassium bromide concentration of 0.15-0.25 mol/L, and heating at a high temperature of 155-165 ℃ in an oil bath for 40-120 min; s02 preparation of RhCl3Solutions and PVP solutions; s03, dropwise adding 2-20 mL of RhCl into S013Solutions and PVP solutions; and S04, sequentially separating and cleaning with acetone and alcohol for multiple times to obtain rhodium nanocube samples with different side lengths, namely RhNCs. The invention also discloses ultraviolet laser repair of the semiconductor by the rhodium nanocubesA method of decorating. The invention breaks through the limitation of the optical property visible light region of the conventional noble metal nano material and the defects of synthesis stability, chemical stability and the like, and realizes the simple control and synthesis of the rhodium nanocube structure with adjustable ultraviolet optical property.

Description

Controllable preparation method of rhodium nanocubes and method for ultraviolet laser modification of semiconductor by using rhodium nanocubes
Technical Field
The invention relates to application of a noble metal nano structure in photoelectric properties of semiconductor nano materials, in particular to a controllable preparation method of a rhodium nanocube and a method for carrying out ultraviolet laser modification on a semiconductor, namely controllable preparation of noble metal RhNCs with adjustable ultraviolet surface plasmon properties and application thereof in a semiconductor ZnO laser device, belonging to the technical field of semiconductor photoelectron devices.
Background
The noble metal nano material has wide application prospect in the fields of optics, electrics, catalysis and the like due to the special physicochemical property. Under the promotion of basic research and technical application, the preparation method of the noble metal nano material makes great progress. Because the structure determines the property and the property reacts with the structure, the control of the morphology of the nano material structure becomes one of effective methods for regulating and controlling the property of the noble metal nano structure. The noble metal nano material has a surface plasmon resonance effect due to the resonance (LSPR) of conduction electrons in metal under the action of excited photons, so that the nano material shows different photoelectric properties. The research shows that: the unique surface plasmon of the metal nano structure can improve the luminous efficiency of the semiconductor material, and the peculiar physical effect of the metal surface plasmon provides an important scientific basis for the design and research and development of micro-nano devices. As a typical representative of semiconductor materials, II-VI semiconductor materials are very easy to realize the preparation of micro-nano structures and laser output. In recent years, research on deeper II-VI group micro-nano lasers mainly focuses on near-ultraviolet semiconductor materials such as ZnO and CdS, so that controllable synthesis of nanoparticles with certain stability and ultraviolet surface plasmon resonance is particularly important. In recent years, most of the work has been concentrated on the visible light region in the reports of preparing metal nanoparticles by a variety of liquid phase synthesis methods, and the preparation of nanoparticles having ultraviolet surface plasmon characteristics is relatively small and the preparation purity is relatively low.
Disclosure of Invention
The invention aims to solve the technical problem that the invention provides a controllable preparation method of a rhodium nanocube, which synthesizes RhNCs structures with adjustable ultraviolet plasma properties by a one-step reduction method, and the size and the ultraviolet optical properties of the RhNCs can be adjusted by changing the amount of precursor salt.
Meanwhile, the invention provides a method for ultraviolet laser modification of a semiconductor by using a rhodium nanocube, which adopts a spin coating method different from the traditional sputtering method to coat RhNCs on the surface of a single ZnO micron line, and effectively improves the optical quality of the ZnO micron line and the cavity quality of a resonator by using the near field enhancement and the surface locality of the RhNCs, thereby improving the near-band edge emission of the single ZnO micron line and realizing the laser emission with lower threshold.
Meanwhile, the invention provides the application of the single Rh @ ZnO microwire composite structure in ultraviolet light-emitting diodes, lasers and photoelectric detectors, the single Rh @ ZnO microwire composite structure breaks through the limitation of optical properties visible light regions of conventional noble metal nano materials and the defects of synthesis stability, chemical stability and the like, realizes the simple operation and control of synthesizing rhodium nano cubic structures with adjustable ultraviolet optical properties, improves the photoelectric properties of wide-bandgap semiconductor materials and devices, and particularly has wide application prospects in the fields of ultraviolet light-emitting diodes, lasers, photoelectric detectors and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the controllable preparation method of the rhodium nanocube comprises the following steps:
s01, preparing an ethylene glycol solution with the potassium bromide concentration of 0.15-0.25 mol/L, and heating at a high temperature of 155-165 ℃ in an oil bath for 40-120 min;
s02 preparation of RhCl3Solution and PVP solution, the solvent is glycol, RhCl3The molar ratio of the solution to the PVP solution was 1: 5;
s03, dropwise adding 2-20 mL of RhCl into S013The dropping speed of the solution and the PVP solution is 1-1.2 mL/h, and magnetic stirring is carried out in the dropping process;
and S04, stopping heating after the dropwise addition is finished, naturally cooling to room temperature, sequentially separating and cleaning with acetone and alcohol for multiple times to obtain rhodium nanocube samples with different side lengths, namely RhNCs, wherein the absorption spectrum of the rhodium nanocube samples is adjustable in an ultraviolet range of 270-400 nm.
The RhCl3The concentrations of the solution and PVP solution were 0.02mol/L and 0.1mol/L, respectively.
The RhCl3The dropping speed of the solution and the PVP solution is the same and the dropping is synchronous.
The method for ultraviolet laser modification of the semiconductor by the rhodium nanocubes comprises the following steps: and (3) spin-coating RhNCs with the side length of 26-50 nm and the corresponding absorption spectrum of 270-400 nm obtained in S04 onto a single ZnO microwire to construct a single Rh @ ZnO microwire composite structure.
Preferably, the RhNCs have an edge length of 42nm, corresponding to an absorption spectrum of 380 nm.
Preferably, the method is operated under an optical microscope, firstly, a ZnO micron line with good crystallization quality is selected, then RhNCs with the LSPR absorption peak of 270-400 nm are spin-coated on the surface of a single ZnO micron line, and the ZnO micron line is placed in an oven at 100-120 ℃ to be heated for 1-2 hours, so that the RhNCs and the ZnO micron line are fully combined.
Preferably, the concentration of the RhNCs is 0.1-0.2 g/mL, and the corresponding absorption peak value is 0.8-0.1(a.u.) measured by absorption spectrum.
The RhNCs are used as WGM laser-enhanced metal nano materials for modifying single ZnO micron line. Namely, the application of the RhNCs in the WGM laser-enhanced metal nano material for modifying single ZnO micron line.
The RhNCs and/or the single Rh @ ZnO micron line composite structure is applied to ultraviolet light-emitting diodes, lasers and photoelectric detectors.
The invention has the following beneficial effects:
1. the invention prepares the metal nano particles matched with the semiconductor material, and provides a basis for further designing and constructing plasmon coupling ZnO and CdS semiconductor-based ultraviolet photoelectric devices and effectively improving the luminous performance and efficiency of ZnO and CdS semiconductor devices by utilizing the metal surface plasmon effect. The invention provides a rhodium nanocube nano structure with adjustable ultraviolet optical properties by combining a liquid phase synthesis method, and the size of the rhodium nanocube is adjusted by changing the amount of added precursor salt under the conditions of magnetic stirring at a high temperature of 160-165 ℃ and PVP assistance, so that the ultraviolet optical properties of the rhodium nanocube nano structure are effectively adjusted and controlled, the preparation method is simple, and the prepared Rh nano particles are good in chemical stability. The composite material is coated on the surface of a ZnO micron line in a spinning mode, so that the spontaneous radiation and stimulated radiation of the Rh @ ZnO composite structure are improved.
2. According to the invention, the ultraviolet-visible-infrared spectrometer (UV-6300) and the transmission electron microscope (TEM: JEOL-100CX) are combined for testing and observing results, so that the obtained rhodium nanocubes have high purity and high yield, and the size and the absorption spectrum are adjustable in an ultraviolet region of 270-400 nm. And the experiment is completed under the high-temperature closed condition of 160-165 ℃, and the obtained nano particles have good thermal stability. The Rh nano-particles with adjustable optical property and good thermal stability have good effect on enhancing spontaneous and stimulated emission of ZnO microwires, and provide a foundation for improving the application of ZnO semiconductors in ultraviolet laser devices.
3. The invention utilizes a polyol slow reduction method to prepare the rhodium nanocubes with adjustable ultraviolet optical properties, and utilizes a one-step reduction method to prepare the rhodium nanocubes under the assistance of reducing agent ethylene glycol and surface coating agent PVP (polyvinylpyrrolidone), RhCl3The synchronism and the molar ratio of PVP addition determine the framework structure and the morphology of the nanocubes, the dripping speed and the adding amount of the precursor salt rhodium chloride directly determine the size of the nanocubes, the optical property of the rhodium nanocubes is in an ultraviolet region, and the ultraviolet optical property of the rhodium nanocubes can be regulated and controlled by the size of the synthesized rhodium nanocubes.
4. According to the invention, ethylene glycol is adopted as a solvent and a reducing agent at the same time, the temperature of an oil bath is 160-165 ℃, and the heating is kept for 1-2 hours, so that the ethylene glycol is completely oxidized into acetaldehyde as the reducing agent. In addition, KBr is added into S01, so that the reaction speed is relieved and integrated, and the reaction is carried out at a constant speed.
5. In the S01 and S03, oil bath heating is adopted, so that the product can be heated uniformly, the reaction temperature can be accurately regulated and controlled, and the change of the product in the reaction process can be sampled and observed at any time. And the oil bath is heated under a closed condition, so that the oxidation of oxygen to a product is avoided, and the influence on the purity of the product is further avoided.
6. The glycol solution of rhodium chloride and PVP in the S03 is controlled to keep the same dropping speed and is synchronously dropped into KBr solution releasing aldehyde group, reduced at the high temperature of 160-165 ℃ and controllably grown along the direction of <111 >.
7. The molar ratio of the rhodium chloride to the ethylene glycol of the PVP in the S02 is kept unchanged, so that the prepared samples are consistent in appearance.
8. In the S03 process, the reaction process is maintained at a high temperature of 160-165 ℃, which shows that the synthesized rhodium nanocube has good chemical stability and thermal stability.
9. In the invention S03, the appearance and the size of the product are changed and the UV-Via spectrum is changed along with the change of the amount of rhodium chloride. Namely, rhodium nanocubes with different sizes can be prepared by changing the volume of the added rhodium chloride, and the addition amount of the rhodium chloride is 2-20 mL.
10. In the invention S04, the excess substances such as glycol and the like are firstly cleaned by acetone, because PVP has low solubility in acetone, rhodium colloid protected by PVP is agglomerated in acetone, a sample is conveniently separated firstly, and then the sample is cleaned and dispersed by alcohol, so that rhodium nanoparticles with uniform dispersion can be obtained.
11. The invention utilizes the polyhydroxylated process assisted by PVP to prepare the rhodium nanocubes with high purity, monodispersity and adjustable ultraviolet surface plasmon, and combines the rhodium nanocubes with ZnO microwires to study the laser emission property of the rhodium nanocubes.
12. The intrinsic absorption peak of the ZnO micron line is near 378nm, so that the rhodium nano cubic particles with the absorption peak near 378nm are preferred in the invention, resonance coupling is easier to form, and lower threshold laser is realized.
Drawings
FIG. 1 is a transmission electron micrograph of rhodium nanocubes prepared according to the present invention;
FIG. 2 is a graph of UV-Via spectra of RhNCs of various sizes prepared in accordance with the present invention;
FIG. 3 is a PL emission spectrum of a composite structure of a ZnO micron line of a comparative example and a single Rh @ ZnO micron line of the present invention under different laser powers;
FIG. 4 is a PL emission spectrum of a composite structure of a ZnO micron line of a comparative example and a single Rh @ ZnO micron line of the present invention at the same laser power (100 uW).
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.
Example 1:
a controllable preparation method of rhodium nanocube comprises heating 2mL of potassium bromide EG solution (KBr, 0.4mmol) in 160 ℃ oil bath for 40min, and then simultaneously dropwise adding 12mL of rhodium chloride (RhCl)30.02mol/L) of ethylene glycol solution and 12mL of ethylene glycol solution of polyvinylpyrrolidone (PVP, 0.1mol/L), the dropping speed is 1mL/h, the heating is stopped (10min) after the dropping is finished for 12h, the mixture is naturally cooled to the room temperature, the sample is separated by acetone, and then the mixture is centrifugally cleaned by alcohol, so that the rhodium nanocube sample is obtained. The transmission electron microscope picture of the sample after centrifugation is shown in FIG. 1.
Example 2:
a controllable preparation method of rhodium nanocube comprises heating 2mL of potassium bromide EG solution (KBr, 0.2mol/L) in 160 ℃ oil bath for 40min, and simultaneously dropwise adding 4mL, 10mL and 16mL of rhodium chloride (RhCl)30.02mol/L) and the same amount of polyvinylpyrrolidone (PVP, 0.1mol/L), wherein the solvent is ethylene glycol, the dropping speed is 1mL/h, the heating is stopped (10min) after the dropping is finished, the mixture is naturally cooled to the room temperature, and the spectrum is measured after separation, centrifugation and washing. As shown in FIG. 2, the UV-Via spectra of RhNCs of different sizes prepared in this example are shown. Wherein, 4mL RhCl3And 4mL of PVP is prepared to obtain RhNCs with an absorption spectrum of 280 nm; 10mL RhCl3And 10mL PVP to obtain RhNCs with an absorption spectrum of 310 nm; 16mLRhCl3And 16mL of PVP were prepared to obtain RhNCs with an absorption spectrum of 380 nm.
Example 3:
a controllable preparation method of rhodium nanocubes comprises the step of brominating 2mLHeating the potassium EG solution (KBr, 0.2mol/L) to 160 ℃ in an oil bath and carrying out magnetic stirring for 1 h; simultaneously dripping different amounts (2 mL-20 mL) of rhodium chloride (RhCl)3) The dropping speed of the ethylene glycol solution and the same amount of ethylene glycol solution of polyvinylpyrrolidone (PVP) is 1mL/h, heating is stopped after the dropping is finished, the mixture is naturally cooled to the room temperature, a sample is separated by acetone, and then the mixture is centrifugally cleaned for multiple times by alcohol, so that rhodium nanocubes with different sizes (side lengths) and adjustable ultraviolet optical properties are obtained.
Example 4
A controllable preparation method of rhodium nanocube comprises heating 2mL of potassium bromide EG solution (KBr, 0.5mmol) in 165 ℃ oil bath for 60min, and then simultaneously dropwise adding 20mL of rhodium chloride (RhCl)30.02mol/L) of ethylene glycol solution and 20mL of ethylene glycol solution of polyvinylpyrrolidone (PVP, 0.1mol/L), the dropping speed is 1.2mL/h, the heating is stopped (10min) after the dropping is finished, the mixture is naturally cooled to the room temperature, the sample is separated by acetone, and then the mixture is centrifugally cleaned by alcohol, so that the rhodium nanocube sample is obtained.
Example 5
A controllable preparation method of rhodium nanocube comprises heating 2mL of potassium bromide EG solution (KBr, 0.3mmol) in an oil bath at 155 ℃ for 120min, and then simultaneously dropwise adding 8mL of rhodium chloride (RhCl)30.02mol/L) of ethylene glycol solution and 8mL of ethylene glycol solution of polyvinylpyrrolidone (PVP, 0.1mol/L), the dropping speed is 1.1mL/h, the heating is stopped (10min) after the dropping is finished, the mixture is naturally cooled to the room temperature, the sample is separated by acetone, and then the mixture is centrifugally cleaned by alcohol, so that the rhodium nanocube sample is obtained.
Example 6
The method for ultraviolet laser modification of the semiconductor by the rhodium nanocubes comprises the following steps:
the first step is as follows: and diluting the prepared RhNCs solution to a concentration of 0.1-0.2 g/mL, and taking an absorption spectrum as a standard, wherein the corresponding absorption peak value is 0.8 (a.u.).
The second step is that: selecting a hexagonal ZnO micron line with good crystallization quality, placing the RnNCs prepared in the first step in the hexagonal ZnO micron line for 5s, taking out the RnNCs, and placing the RnNCs in an oven at 100 ℃ for 1h to ensure that the RhNCs and the ZnO micron line are fully contacted and combined; namely, a complete single Rh @ ZnO micron line composite structure is constructed.
Example 7
The method for ultraviolet laser modification of the semiconductor by the rhodium nanocubes comprises the following steps: and spin-coating the obtained RhNCs with the side length of 26-50 nm and the corresponding absorption spectrum of 270-400 nm onto a single ZnO micron line to construct a single Rh @ ZnO micron line composite structure.
Firstly, selecting a ZnO microwire with good crystallization quality, then spin-coating RhNCs with an LSPR absorption peak of 270-400 nm on the surface of a single ZnO microwire, and placing the ZnO microwire in a 120 ℃ oven for heating for 2 hours to fully combine the RhNCs and the ZnO microwire.
The concentration of the RhNCs is 0.1-0.2 g/mL.
Example 8
This example differs from example 7 only in that: the side length of RhNCs is 42nm, and the corresponding absorption spectrum is 380 nm; the concentration of RhNCs was 0.15 g/mL.
As shown in FIG. 3, which is a PL emission spectrum of the composite structure of the ZnO microwire of the comparative example and the single Rh @ ZnO microwire of the present invention under different laser powers, it can be seen from FIG. 3 that the single Rh @ ZnO microwire composite structure of the present invention greatly improves the spontaneous emission and stimulated emission of the ZnO microwire.
As shown in FIG. 4, which is a PL emission spectrum of the composite structure of the ZnO micron line of the comparative example and the single Rh @ ZnO micron line of the present invention under the same laser power (100uW), it can be seen from FIG. 4 that the spontaneous emission and stimulated emission of the composite structure of the single Rh @ ZnO micron line of the present invention are greatly improved under the laser power of 100 uW.
Example 9
This example differs from example 7 only in that: the side length of RhNCs is 26nm, and the corresponding absorption spectrum is 270 nm; the concentration of RhNCs was 0.1 g/mL.
Example 10
This example differs from example 7 only in that: the side length of RhNCs is 50nm, and the corresponding absorption spectrum is 400 nm; the concentration of RhNCs was 0.2 g/mL.
Example 11
The application of the single Rh @ ZnO micron line composite structure in ultraviolet light-emitting diodes, lasers and photoelectric detectors.
Example 12
Application of rhodium nanocubes in ultraviolet light emitting diodes, lasers and photodetectors.
Example 13
The rhodium nanocubes are applied to WGM laser-enhanced metal nanomaterials for modifying single ZnO microwire.
Comparative example
A single ZnO micron line was used as a comparative example.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The controllable preparation method of the rhodium nanocube is characterized by comprising the following steps: the method comprises the following steps:
s01, preparing an ethylene glycol solution with the potassium bromide concentration of 0.15-0.25 mol/L, and heating at a high temperature of 155-165 ℃ in an oil bath for 40-120 min;
s02 preparation of RhCl3Solution and PVP solution, the solvent is glycol, RhCl3The molar ratio of the solution to the PVP solution was 1: 5;
s03, dropwise adding 2-20 mL of RhCl into S013The dropping speed of the solution and the PVP solution is 1-1.2 mL/h, and magnetic stirring is carried out in the dropping process;
and S04, stopping heating after the dropwise addition is finished, naturally cooling to room temperature, sequentially separating and cleaning with acetone and alcohol for multiple times to obtain rhodium nanocube samples with different side lengths, namely RhNCs, wherein the absorption spectrum of the rhodium nanocube samples is adjustable in an ultraviolet range of 270-400 nm.
2. The controllable preparation method of rhodium nanocubes according to claim 1, characterized in that: the RhCl3The concentrations of the solution and PVP solution were 0.02mol/L and 0.1mol/L, respectively.
3. The controllable preparation method of rhodium nanocubes according to claim 1, characterized in that: the RhCl3The dropping speed of the solution and the PVP solution is the same and the dropping is synchronous.
4. The method for ultraviolet laser modification of a semiconductor by using the rhodium nanocube prepared by the controllable preparation method of the rhodium nanocube according to any one of claims 1 to 3 is characterized by comprising the following steps: the method comprises the following steps: and (3) spin-coating RhNCs with the side length of 26-50 nm and the corresponding absorption spectrum of 270-400 nm obtained in S04 onto a single ZnO microwire to construct a single Rh @ ZnO microwire composite structure.
5. The method of claim 4, wherein: the side length of the RhNCs is 42nm, and the corresponding absorption spectrum is 380 nm.
6. The method of claim 4, wherein: the method comprises the steps of operating under an optical microscope, firstly selecting a ZnO micron line with good crystallization quality, then spin-coating RhNCs with an LSPR absorption peak of 270-400 nm on the surface of a single ZnO micron line, and placing the ZnO micron line in an oven at 100-120 ℃ for heating for 1-2 hours to enable the RhNCs and the ZnO micron line to be fully combined.
7. The method of claim 6, wherein: the concentration of the RhNCs is 0.1-0.2 g/mL.
8. The method of claim 4, wherein: the RhNCs and/or the single Rh @ ZnO micron line composite structure is applied to ultraviolet light-emitting diodes, lasers and photoelectric detectors.
CN202011109842.2A 2020-10-16 2020-10-16 Controllable preparation method of rhodium nanocubes and method for ultraviolet laser modification of semiconductor by using rhodium nanocubes Withdrawn CN112222422A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050056118A1 (en) * 2002-12-09 2005-03-17 Younan Xia Methods of nanostructure formation and shape selection
CN103658678A (en) * 2014-01-06 2014-03-26 景德镇陶瓷学院 Preparation method for silver nanocubes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050056118A1 (en) * 2002-12-09 2005-03-17 Younan Xia Methods of nanostructure formation and shape selection
CN103658678A (en) * 2014-01-06 2014-03-26 景德镇陶瓷学院 Preparation method for silver nanocubes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHANGZONG MIAO 等: "High performance lasing in a single ZnO microwire using Rh nanocubes", 《OPTICS EXPRESS》 *
王欢等: "立方体钯纳米颗粒的控制合成及其电催化性能", 《广州化工》 *

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Application publication date: 20210115