CN108196326A - A kind of broadband wave absorbing device based on black phosphorus and super surface - Google Patents
A kind of broadband wave absorbing device based on black phosphorus and super surface Download PDFInfo
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- CN108196326A CN108196326A CN201810262734.5A CN201810262734A CN108196326A CN 108196326 A CN108196326 A CN 108196326A CN 201810262734 A CN201810262734 A CN 201810262734A CN 108196326 A CN108196326 A CN 108196326A
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- black phosphorus
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Abstract
The present invention relates to a kind of broadband wave absorbing devices based on black phosphorus and super surface, including metal base plate and the dielectric substrate for being located at metal base plate upper strata, there are at least three layers band-like black phosphorus layer away from distribution between the upper and lower above the dielectric liner plate, the band-like black phosphorus layer of bottom is located at dielectric liner plate upper surface, width becomes narrow gradually the band-like black phosphorus layer from bottom to up, and it is identical and be used for the dielectric plate for separating band-like black phosphorus layer that thickness is equipped between the band-like black phosphorus layer.The present invention utilizes the width for changing band-like black phosphorus layer, this feature of drifting about accordingly can also occur for the resonance peak position of wave absorbing device, by the band-like black phosphorus layer for setting different in width, solve the problems, such as that the existing perfect wave absorbing device bandwidth based on black phosphorus material is narrow, the bandwidth of operation of wave absorbing device has been widened, has realized the characteristic that wide band absorption and dynamic regulation and perfection in suction wave work inhale wave.
Description
Technical field
The present invention relates to absorbing material technical field, the adjustable wave absorbing device in broadband of two-dimensional material is related generally to, especially one
Middle ultra-wideband wave absorbing device of the kind based on multilayer black phosphorus and super surface, available for the modern photoelectron such as sensor, bioprobe
Device.
Background technology
Black phosphorus is a kind of two-dimensional material being made of phosphorus atoms, and appearance and characteristic are all close with graphene, its atom is in
The sheet of existing fold, shows great anisotropy in photon and electronics, and using black phosphorus to film thickness and
Characteristic is adjusted in the sensibility of doping level.Therefore these characteristics cause black phosphorus to can be used for making various novel nano devices
Part, such as optical modulator, polarizer, photon detector and absorption device, are a kind of New Two Dimensional materials for having very big potentiality.
Rubber-ferrite device refer to be absorbed incident electromagnetic wave and electromagnetic wave energy be converted into electric energy or
The electromagnetic device of the other forms energy such as thermal energy, using very extensive.Since Landy et al. utilized metal-electricity in 2011
The periodic structure of dielectric-metal is built, and to top metal carry out structure design after, super surface absorber just due to
Its ultra-thin thickness and good wave-sucking performance and get more and more people's extensive concerning.With the appearance of two-dimensional material, individual layer is utilized
For black phosphorus in the metallic character of middle infrared band, wave absorbing device can change the humorous of black phosphorus wave absorbing device by changing the doping level of black phosphorus
Vibration frequency, and then realize and inhale the adjustable characteristic of wave frequency rate.At present, although the absorber based on black phosphorus material has had well
It is polarization correlated and with it is good can hamony, but its wave-sucking performance and bandwidth of operation are still unsatisfactory.For example,
Northwestern Univ USA K.Aydin in 2016 et al. has delivered " Localized surface on Nano Letters periodicals
Plasmons in monolayer black phosphorus " realize two dimension in paper for the first time using the band-like black phosphorus of individual layer
Application of the material black phosphorus in wave absorbing device, however the wave absorbing efficiency of the wave absorbing device but can only achieve 50% or so.Then, 2017
Feng Xiong etc. have delivered " Strong anisotropic perfect on Journal of Optics periodicals
absorption in monolayer black phosphorous and its application as tunable
Polarizer " applies individual layer black phosphorus in paper so that wave absorbing device inhales wave rate at 22.8 μm and can reach 99.56%, but suction
Wave device is only 22 μm to 25 μm in the wave-length coverage for inhaling more than 90% wave rate, and the narrow reality for limiting the wave absorbing device of bandwidth should
With.
As application of the broadband wave absorbing device in modern communications is more and more extensive, this requires not only needed in design
The device high to a wave absorbing efficiency, and taller bandwidth of operation, and prior art one side wave absorbing efficiency is general, it is another
Aspect cannot obtain enough bandwidth of operation, while lack active tuning performance.
Invention content
The technical problem to be solved by the present invention is to：In order to overcome deficiency in the prior art, the present invention provides one kind and can carry
High wave absorbing efficiency, have active tuning performance bandwidth tunable characteristic super surface broadband wave absorbing device.
The technical solution adopted by the present invention to solve the technical problems is：A kind of broadband based on multilayer black phosphorus and super surface
Wave absorbing device including metal base plate and the dielectric substrate for being located at metal base plate upper strata, has extremely above the dielectric liner plate
Few three layers the band-like black phosphorus layer away from distribution, the band-like black phosphorus layer of bottom are located at dielectric liner plate upper surface, the band between the upper and lower
Width becomes narrow gradually shape black phosphorus layer from bottom to up, and it is identical and be used to separate band-like black that thickness is equipped between the band-like black phosphorus layer
The dielectric plate of phosphorous layer.
Most preferably, there are five layers of band-like black phosphorus layer away from distribution between the upper and lower, five layers band-like above the dielectric liner plate
Width is gradually narrowed corresponding to the resonance peak of different location black phosphorus layer from bottom to top, and thickness is equipped between neighbouring strip black phosphorus layer
Identical dielectric plate.
The dielectric plate has identical dielectric constant with dielectric substrate.
The beneficial effects of the invention are as follows：The present invention utilizes the band-like black phosphorus layer of different in width, solves existing based on black
The problem of perfect wave absorbing device bandwidth of phosphate material is narrow, has widened the bandwidth of operation of wave absorbing device, realizes the width inhaled in wave work
With absorption and dynamic regulation and the perfect characteristic for inhaling wave.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the cross section structure schematic diagram of the present invention.
The wave-absorbing effect figure that Fig. 2 is calculated using time-domain finite difference.
Fig. 3 is the absorption distribution figure of wave absorbing device when black phosphorus doping concentration changes.
In figure：1. 2. dielectric liner plate of metal base plate, 3. band-like 4. dielectric plate of black phosphorus layer
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
A kind of broadband wave absorbing device based on multilayer black phosphorus and super surface as shown in Figure 1 including metal base plate 1 and is located at gold
Belong to the dielectric substrate 2 on 1 upper strata of bottom plate, 2 top of dielectric liner plate has five layers of band-like black phosphorus away from distribution between the upper and lower
Layer 3, the band-like black phosphorus layer 3 of bottom is located at 2 upper surface of dielectric liner plate, and width is gradual from bottom to up for the band-like black phosphorus layer 3
Narrow corresponding to the resonance peak of different location, it is identical and be used to separate that thickness is equipped between neighbouring band-like black phosphorus layer 3
The dielectric plate 4 of band-like black phosphorus layer 3, the dielectric plate 4 have identical dielectric constant with dielectric substrate 2.
Specific in the present embodiment, the 1 length and width p of metal base plate and cycle phase are same, p=200nm, thickness s=
300nm；2 thickness hs of dielectric substrate=2500nm, separate band-like 3 material of black phosphorus layer used in 4 thickness d of dielectric plate be
150nm, and the Refractive Index of Material n=1.7 of dielectric substrate 2 and dielectric plate 4, the width of five layers of band-like black phosphorus layer 3 from up to
It is respectively w down1=133nm, w2=146nm, w3=159nm, w4=172nm, w5=185nm.
The operation principle of the wave absorbing device is as described in the following contents：The absorptivity calculation formula of wave absorbing device is typically expressed as：A=
1-R-T, here since 1 thickness of the metal base plate of use is sufficiently thick so that transmissivity T=0 in calculating, therefore suction wave formula can table
It is shown as A=1-R.In middle infrared band, when plane wave impinges perpendicularly on band-like 3 surface of black phosphorus layer, the table of black phosphorus can be excited
Surface plasma excimer (SPPs) generates surface plasma resonance effect.At this point, when plane wave incidence is to band-like black phosphorus layer 3
The local field strength Energy distribution of excitation results in RESONANCE ABSORPTION enhancing in the both sides of band-like black phosphorus layer 3.When the band-like black phosphorus layer of change
During 3 width, the resonance peak position of wave absorbing device can also occur to drift about accordingly, using this thinking, by five different in width
Band-like black phosphorus layer 3 carries out stacked in multi-layers, you can different resonance peak resonance superpositions is realized, so as to fulfill broadband wave-absorbing property；Meanwhile
Change the doping concentration of band-like black phosphorus layer 3, thus it is possible to vary black phosphorus broadband Xi Bo positions.
In this example, the wave-absorbing effect being calculated using time-domain finite difference is as shown in Fig. 2, band-like based on multilayer
The super surface wave absorbing device of black phosphorus layer 3, when electron adulterated a concentration of the 3 × 10 of black phosphorus13cm-2When, wavelength is in 15 μm~30 mu m wavebands
In the range of, for absorptivity more than 90%, bandwidth is 15 μm.To further illustrate the electron adulterated concentration of black phosphorus to absorption spectra
It influences, Fig. 3 is given in different levels of doping, and black phosphorus is to the absorption distribution situation of plane wave.When the doping of black phosphorus
A concentration of 4 × 1013cm-2When, in the range of 13 μm~27 mu m wavebands, wave rate is inhaled more than 90%, and bandwidth is 14 μm；When black
Phosphorus electron adulterated a concentration of 5 × 1013cm-2When, in the range of 13 μm~23 mu m wavebands, wave rate is inhaled more than 90%, bandwidth is
10μm；When the electron adulterated concentration of black phosphorus increases to 6 × 1013cm-2When, larger reduction occurs for wave absorbing efficiency and bandwidth.By
This is not difficult to find out that, with the increase of doping concentration, the suction wave position of wave absorbing device is gradually to low band into line displacement, and it is wide to inhale wave
Degree becomes narrow gradually.Therefore, by changing the doping concentration of band-like black phosphorus layer 3, which can carry out inhaling the adjusting in wave broadband, this
Also the application range of the wave absorbing device is extended.
In conclusion the super surface broadband wave absorbing device based on two-dimensional material black phosphorus is, it can be achieved that broadband wave-absorbing effect, and can
Wavestrip is wide is tuned to inhaling, and realizes the adjustable absorbing property in broadband, wave absorbing device of the present invention is simple in structure, can be applied to new
Type opto-electronic device.
Using above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the content on specification, it is necessary to determine its technical scope according to right.
Claims (3)
1. a kind of broadband wave absorbing device based on black phosphorus and super surface, including metal base plate and the dielectric for being located at metal base plate upper strata
Substrate, it is characterized in that：There are at least three layers band-like black phosphorus layer away from distribution between the upper and lower above the dielectric liner plate, bottom
Band-like black phosphorus layer is located at dielectric liner plate upper surface, and width becomes narrow gradually the band-like black phosphorus layer from bottom to up, the band
It is identical and be used for the dielectric plate for separating band-like black phosphorus layer that thickness is equipped between shape black phosphorus layer.
2. the broadband wave absorbing device based on black phosphorus and super surface as described in claim 1, it is characterized in that：The dielectric liner plate
Top has five layers of band-like black phosphorus layer away from distribution between the upper and lower, and width is gradually narrowed and corresponded to five layers of band-like black phosphorus layer from bottom to top
The identical dielectric plate of thickness is equipped between the resonance peak of different location, neighbouring strip black phosphorus layer.
3. the broadband wave absorbing device based on black phosphorus and super surface as claimed in claim 2, it is characterized in that：The dielectric plate with
Dielectric substrate has identical dielectric constant.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471137A (en) * | 2019-09-17 | 2019-11-19 | 厦门理工学院 | A kind of two-band infrared wave-absorbing device |
| CN113363709A (en) * | 2021-04-19 | 2021-09-07 | 中山大学 | In-plane anisotropic polariton device based on metal micro-nano antenna and preparation method and excitation method thereof |
| CN113868965A (en) * | 2021-12-01 | 2021-12-31 | 北京芯可鉴科技有限公司 | Design method and system of black phosphorus wave absorber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221752A (en) * | 2017-05-05 | 2017-09-29 | 北京理工大学 | A kind of insensitive Meta Materials wave absorbing device of wide bandwidth angle polarization |
| CN207098023U (en) * | 2017-08-10 | 2018-03-13 | 杭州电子科技大学 | Band inhales molded breadth band frequency selecting structures |
-
2018
- 2018-03-28 CN CN201810262734.5A patent/CN108196326B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221752A (en) * | 2017-05-05 | 2017-09-29 | 北京理工大学 | A kind of insensitive Meta Materials wave absorbing device of wide bandwidth angle polarization |
| CN207098023U (en) * | 2017-08-10 | 2018-03-13 | 杭州电子科技大学 | Band inhales molded breadth band frequency selecting structures |
Non-Patent Citations (2)
| Title |
|---|
| FENG XIONG ET.AL: ""Strong anisotropic perfect absorption in monolayer black phosphorous and its application as tunable polarizer"", 《JOURNAL OF OPTICS》 * |
| ZIZHUO LIU ET. AL: ""Localized surface plasmons in Nanostructured Monolayer Black Phosphorus"", 《NANO LETTERS》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471137A (en) * | 2019-09-17 | 2019-11-19 | 厦门理工学院 | A kind of two-band infrared wave-absorbing device |
| CN110471137B (en) * | 2019-09-17 | 2024-02-13 | 厦门理工学院 | Dual-band infrared absorber |
| CN113363709A (en) * | 2021-04-19 | 2021-09-07 | 中山大学 | In-plane anisotropic polariton device based on metal micro-nano antenna and preparation method and excitation method thereof |
| CN113868965A (en) * | 2021-12-01 | 2021-12-31 | 北京芯可鉴科技有限公司 | Design method and system of black phosphorus wave absorber |
| CN113868965B (en) * | 2021-12-01 | 2022-02-22 | 北京芯可鉴科技有限公司 | Design method and system of black phosphorus wave absorber |
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