CN110440922A - A kind of circularly polarized light detector based on two telluride molybdenums - Google Patents
A kind of circularly polarized light detector based on two telluride molybdenums Download PDFInfo
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- CN110440922A CN110440922A CN201910743351.4A CN201910743351A CN110440922A CN 110440922 A CN110440922 A CN 110440922A CN 201910743351 A CN201910743351 A CN 201910743351A CN 110440922 A CN110440922 A CN 110440922A
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- electrode
- telluride
- polarized light
- circularly polarized
- light detector
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- 235000016768 molybdenum Nutrition 0.000 title claims abstract description 49
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 title claims abstract description 47
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 29
- 239000011733 molybdenum Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 241000790917 Dioxys <bee> Species 0.000 claims 1
- 229910003978 SiClx Inorganic materials 0.000 claims 1
- 229910052714 tellurium Inorganic materials 0.000 claims 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 15
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 230000010287 polarization Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J4/00—Measuring polarisation of light
- G01J4/04—Polarimeters using electric detection means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The present invention relates to a kind of circularly polarized light detectors based on two telluride molybdenums, including basal layer, it is provided with two telluride molybdenum nanoscale twins above the basal layer, is provided with the first electrode being spaced apart from each other, second electrode, anisotropy metal layer above the two telluride molybdenum nanoscale twins；The anisotropy metal layer is set between first electrode, second electrode；The circularly polarized light detector based on two telluride molybdenums can generate photogenerated current in two telluride molybdenum nanoscale twins and first electrode, second electrode, by detecting the variation of photogenerated current, realize the detection of circularly polarized light；It is not only simple in structure compared to existing temperature detector, and sensitivity is higher, there is higher measurement accuracy and stability.
Description
Technical field
The present invention relates to photodetector technical fields, and in particular to a kind of circularly polarized light detection based on two telluride molybdenums
Device.
Background technique
The physical effect of photodetector is generally divided into photon effect and photo-thermal effect, and corresponding detector is referred to as light
Subtype detector and photo-thermal type detector.The common trait of various photon type detectors is using semiconductor energy carrying material, photon
Energy has generated directly effect to photoelectronic in detection material, therefore photon type detector has cut-off response frequency or wavelength,
And spectral response is limited to a certain wave band, therefore different material systems determines that detector has different response wave length scopes,
Generally it is difficult to use in wide range or multispectral section of detection.Photo-thermal type detector is not caused directly after absorbing optical radiation energy
The change of internal electron state, but the luminous energy of absorption is become the energy of thermal motion of lattice, cause detecting element temperature to rise,
It changes so as to cause the electrical properties of detecting element or other physical properties, therefore the size of photo-thermal effect and photon energy does not have
There is direct relation, photo-thermal type detector is in principle to frequency without selectivity.Due to infrared band especially in LONG WAVE INFRARED with
The photo-thermal effect of upper wave band becomes apparent from compared to Uv and visible light, therefore optothermal detector is commonly used in the spy of middle long wave optical radiation
It surveys, typical photo-thermal type detector includes the types such as micro-metering bolometer, pyroelectric detector and thermocouple detector.Due to temperature
Raising is the effect of heat accumulation, and the general response speed of thermal detector based on photo-thermal effect is slower, in millisecond magnitude.
However, existing optothermal detector be primarily used to detection light intensity, main improvement direction be also embodied in as
In terms of the intensity of the light of what detection；It can not carry out the detection in circularly polarized light direction.
Summary of the invention
In view of the above-mentioned problems, present invention aim to address the spies that existing optothermal detector can not carry out circularly polarized light direction
The problem of survey.
For this purpose, the present invention provides a kind of circularly polarized light detector based on two telluride molybdenums, including basal layer, the substrate
The top of layer is provided with two telluride molybdenum nanoscale twins, is provided with first be spaced apart from each other above the two telluride molybdenum nanoscale twins
Electrode, second electrode, anisotropy metal layer；The anisotropy metal layer is set between first electrode, second electrode,.
The anisotropy metal layer is metal grating.
Multiple grooves are provided on two telluride molybdenum nanoscale twins of institute, the metal grating is as in groove.
The anisotropy metal layer is contacted with an electrode in first electrode or second electrode.
Silicon dioxide layer is additionally provided between the anisotropy metal layer and two telluride molybdenum nanoscale twins.
The silicon dioxide layer with a thickness of 10nm~100nm.
The two telluride molybdenum nanoscale twins with a thickness of 10nm~100nm.
Beneficial effects of the present invention: this circularly polarized light detector based on two telluride molybdenums provided by the invention, in two telluriums
Photogenerated current can be generated by changing molybdenum nanoscale twins and first electrode, second electrode, by detecting the variation of photogenerated current, realize circle
The detection of polarised light；It is not only simple in structure compared to existing temperature detector, and sensitivity is higher, there is higher measurement
Precision and stability.
The present invention is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the circularly polarized light detector structural schematic diagram one based on two telluride molybdenums.
Fig. 2 is the circularly polarized light detector structural schematic diagram two based on two telluride molybdenums.
Fig. 3 is the circularly polarized light detector structural schematic diagram three based on two telluride molybdenums.
Fig. 4 is the circularly polarized light detector structural schematic diagram four based on two telluride molybdenums.
In figure: 1, basal layer；2, two telluride molybdenum nanoscale twins；3, first electrode；4 second electrodes；5, anisotropy metal
Layer；6, silicon dioxide layer；7, groove.
Specific embodiment
Reach the technical means and efficacy that predetermined purpose is taken for the present invention is further explained, below in conjunction with attached drawing and reality
Example is applied to a specific embodiment of the invention, structure feature and its effect, detailed description are as follows.
Embodiment 1
Present embodiments provide a kind of circularly polarized light detector based on two telluride molybdenums as shown in Figure 1, including basal layer 1, base
Bottom 1 mainly plays a supportive role, and can play good insulating effect, and therefore, basal layer 1 can be by silica system
At；The top of the basal layer 1 is provided with two telluride molybdenum nanoscale twins 2, and the top of the two telluride molybdenum nanoscale twins 2 is provided with
First electrode 3, the second electrode 4, anisotropy metal layer 5 being spaced apart from each other；The anisotropy metal layer 5 is set to the first electricity
Between pole 3, second electrode 4, also, anisotropy metal layer 5 is connected with one of electrode；When circularly polarized light to be detected
When being incident on two telluride molybdenum nanoscale twins 2, two telluride molybdenum nanoscale twins 2 and the first electrode 3 being disposed over or the second electricity
Photogenerated current is generated between pole 4, since anisotropy metal layer 5 has anisotropy, can be incident on two telluride molybdenum nanometer sheets
The circularly polarized light of different polarization states of layer 2 generates different couplings, in this way, two telluride molybdenum nanoscale twins 2 be disposed over
The intensity of generation photogenerated current is with regard to different between first electrode 3 or second electrode 4, by detecting the characteristic of photoproduction circuit,
It may determine that the polarization state of circularly polarized light, to realize the detection of circularly polarized light.It only needs to detect photoproduction sense of current, just
It may determine that left circularly polarized light or right-circularly polarized light, the size variation of photogenerated current can be used to judge circular polarization
The intensity of light；For example, when the photogenerated current that external impressed current detection circuit detects is to flow to second electrode 4 by first electrode 3
When, it can be determined that the circularly polarized light for being incidence is left circularly polarized light, when the photoproduction electricity that external impressed current detection circuit detects
Stream is when flowing to first electrode 3 by second electrode 4, it can be determined that the circularly polarized light for being incidence is right-circularly polarized light；Tool
The curent change of body, it can be determined that the intensity of incident circularly polarized light.
Further, as shown in Figure 2, Figure 3, Figure 4, the anisotropy metal layer 5 is metal grating.The side of metal grating
Direction to the two telluride molybdenum atom chains with two telluride molybdenum nanoscale twins 2 is not the special angles such as 45 degree, 135 degree；Metal grating
It is the vibration of both direction by photodegradation, the transmission coefficient difference and phase change of both direction are different, these circularly polarized lights enter
When being mapped on two telluride molybdenum nanoscale twins 2, it is superimposed as different vibrations；By measuring the intensity of photogenerated current, circular polarization is realized
The detection of polarization state.
Further, multiple grooves 7 are provided on two telluride molybdenum nanoscale twins 2 of institute, the metal grating is as groove 7
In.
Further, as shown in Figure 2, Figure 4 shows, in the anisotropy metal layer 5 and first electrode 3 or second electrode 4
One electrode is close, this mode, can equally make two telluride molybdenum nanoscale twins 2 and the first electrode 3 being disposed over or
The intensity of photogenerated current is generated between second electrode 4 with regard to different, so as to by detecting the characteristic of photoproduction circuit, to judge
The polarization state of circularly polarized light, to realize the detection of circularly polarized light.
Further, silicon dioxide layer is additionally provided between the anisotropy metal layer 5 and two telluride molybdenum nanoscale twins 2
6；The silicon dioxide layer 6 with a thickness of 10nm~100nm, the preferential selection silicon dioxide layer 6 with a thickness of 20nm,
30nm, 40nm, 50nm, 60nm etc. can form the local electric field of distortion in this way in silicon dioxide layer 6, to enhance incidence
Circularly polarized light and two telluride molybdenum nanoscale twins 2 coupling, to improve the sensitivity of detection.
Further, the two telluride molybdenum nanoscale twins 2 with a thickness of 10nm~100nm, preferential your outer half gold
Belong to layer 2 with a thickness of 30nm, 50nm, 80nm etc..
In conclusion the circularly polarized light detector based on two telluride molybdenums is somebody's turn to do, in two telluride molybdenum nanoscale twins 2 and first electrode
3, second electrode 4 can generate photogenerated current, by detecting the variation of photogenerated current, realize the detection of circularly polarized light；Compared to
Existing temperature detector is not only simple in structure, and sensitivity is higher, has higher measurement accuracy and stability.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, In
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (7)
1. a kind of circularly polarized light detector based on two telluride molybdenums, it is characterised in that: including basal layer (1), the basal layer (1)
Top be provided with two telluride molybdenum nanoscale twins (2), be provided with and be spaced apart from each other above the two telluride molybdenum nanoscale twins (2)
First electrode (3), second electrode (4), anisotropy metal layer (5)；The anisotropy metal layer (5) is set to first electrode
(3), between second electrode (4).
2. a kind of circularly polarized light detector based on two telluride molybdenums as described in claim 1, it is characterised in that: it is described respectively to different
Property metal layer (5) be metal grating.
3. a kind of circularly polarized light detector based on two telluride molybdenums as claimed in claim 2, it is characterised in that: two telluride
It is provided on molybdenum nanoscale twins (2) multiple grooves (7), the metal grating is as in groove (7).
4. a kind of circularly polarized light detector based on two telluride molybdenums as described in claim 1, it is characterised in that: it is described respectively to
Anisotropic metal layer (5) contacts with an electrode in first electrode (3) or second electrode (4).
5. a kind of circularly polarized light detector based on two telluride molybdenums as described in claim 1, it is characterised in that: it is described respectively to
Silicon dioxide layer (6) are additionally provided between anisotropic metal layer (5) and two telluride molybdenum nanoscale twins (2).
6. a kind of circularly polarized light detector based on two telluride molybdenums as claimed in claim 5, it is characterised in that: the dioxy
SiClx layer (6) with a thickness of 10nm~100nm.
7. a kind of circularly polarized light detector based on two telluride molybdenums as described in claim 1, it is characterised in that: two tellurium
Change molybdenum nanoscale twins (2) with a thickness of 10nm~100nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743351.4A CN110440922A (en) | 2019-08-13 | 2019-08-13 | A kind of circularly polarized light detector based on two telluride molybdenums |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743351.4A CN110440922A (en) | 2019-08-13 | 2019-08-13 | A kind of circularly polarized light detector based on two telluride molybdenums |
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| Publication Number | Publication Date |
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| CN110440922A true CN110440922A (en) | 2019-11-12 |
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| CN201910743351.4A Withdrawn CN110440922A (en) | 2019-08-13 | 2019-08-13 | A kind of circularly polarized light detector based on two telluride molybdenums |
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| CN (1) | CN110440922A (en) |
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2019
- 2019-08-13 CN CN201910743351.4A patent/CN110440922A/en not_active Withdrawn
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Application publication date: 20191112 |
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