EP3646388A1 - Transistor à effet de champ à gaz d'électrons bidimensionnel, composant et procédés associés - Google Patents
Transistor à effet de champ à gaz d'électrons bidimensionnel, composant et procédés associésInfo
- Publication number
- EP3646388A1 EP3646388A1 EP18733285.3A EP18733285A EP3646388A1 EP 3646388 A1 EP3646388 A1 EP 3646388A1 EP 18733285 A EP18733285 A EP 18733285A EP 3646388 A1 EP3646388 A1 EP 3646388A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- transistor
- drain
- magnetic field
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000005669 field effect Effects 0.000 title claims abstract description 20
- 230000005533 two-dimensional electron gas Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 78
- 239000012535 impurity Substances 0.000 claims abstract description 40
- 239000004065 semiconductor Substances 0.000 claims description 11
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052790 beryllium Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910000673 Indium arsenide Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000370 acceptor Substances 0.000 description 15
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000005684 electric field Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000005357 Hall field Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MDPILPRLPQYEEN-UHFFFAOYSA-N aluminium arsenide Chemical compound [As]#[Al] MDPILPRLPQYEEN-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 239000002772 conduction electron Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000013139 quantization Methods 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- 229910003363 ZnMgO Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052696 pnictogen Inorganic materials 0.000 description 1
- 150000003063 pnictogens Chemical class 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/82—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by variation of the magnetic field applied to the device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N52/00—Hall-effect devices
- H10N52/101—Semiconductor Hall-effect devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/201—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds, e.g. alloys
- H01L29/205—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds including two or more compounds, e.g. alloys in different semiconductor regions, e.g. heterojunctions
Definitions
- the present invention relates to a two-dimensional electron gas field effect transistor.
- the present invention also relates to a component comprising such a transistor, a method of generating a current by the transistor and to a method of manufacturing such a transistor.
- the transistor is a component made from high quality semiconductor materials with three contacts.
- the contacts are a gate, a drain and a source.
- the current between the source and the drain is controlled by an electric field controlled by the application of a potential on the gate of the transistor, more precisely, by the application of a voltage between the gate and the source.
- the transistor is often referred to by the acronym TEGFET which refers to the English term “two-dimensional Electron Gas Field Effect Transistor”.
- the transistor is sometimes referred to as a field effect transistor and electronically distributed.
- Other names are also found in the literature as the acronym HEMT for the English term of "High Electronic Mobility Transistor” which literally means “high electron mobility transistor” or the acronym MODFET for the English term “Modulated Doped Field” Effect Transistor "which literally means” modulated doped field effect transistor ".
- the two-dimensional electron gas field effect transistor is a component that exploits the high mobility properties of a two-dimensional electron gas formed at the interface of a heterojunction. Otherwise formulated, such a transistor uses for its conduction an electron gas in a first undoped semiconductor layer, but the electrons come from a second semiconductor layer in contact with the first layer. The electron transfer resulting from the interface between these two layers is used to create a two-dimensional electron gas which is well suited to the realization of a field effect transistor because of the very high mobility in the first layer.
- a leakage current at the gate is an undesirable source of noise, particularly at low temperatures.
- the description proposes a two-dimensional electron gas field effect transistor comprising a drain, a source and a heterojunction.
- the heterojunction comprises a first planar layer and a second planar layer, the first layer being made of a first material and comprising a first sub-layer formed by acceptor type impurities, the second layer being made of a second material and comprising a second sublayer formed by donor-type impurities.
- the transistor also includes a current control unit between the drain and the source, the control unit being a magnetic field applicator perpendicular to the layers.
- heterojunction By the term “comprising” associated with the term “heterojunction”, it is understood that the first layer and the second layer form a heterojunction.
- the transistor comprises one or more of the following characteristics, taken separately or in any technically possible combination:
- the acceptor-type impurities are beryllium or carbon.
- the level of impurities in the first material is greater than 10 11 cm -2 .
- the donor type impurities are silicon.
- the level of impurities in the second material is greater than 5.10 11 cm -2 .
- the first material and the second material are semiconductor materials III-V, the pair of the first material and the second material being in particular one of the pairs consisting of AIGaN / GaN; AlInAs / GalnAs; GalnAs / AIGaAs; AIGaAs / AIGa, AIGaAs / GaAs, and InAs / AISb.
- the transistor is devoid of a gate.
- the present description also relates to an electronic component, in particular a Terahertz component, such as a source or a sensor, comprising at least one transistor as previously described.
- a Terahertz component such as a source or a sensor, comprising at least one transistor as previously described.
- the present description also relates to a method for generating a current by a two-dimensional electron gas field effect transistor comprising a drain, a source and a heterojunction.
- the heterojunction comprises a first planar layer and a second planar layer, the first layer being made of a first material and comprising a first sub-layer formed by acceptor type impurities, the second layer being made of a second material and comprising a second sublayer formed by donor-type impurities.
- the transistor also comprises a unit for controlling the current between the drain and the source, the control unit being a magnetic field applicator perpendicular to the layers.
- the generation method comprises a step of applying a magnetic field by the control unit.
- the present disclosure also relates to a method of manufacturing a two-dimensional electron gas field effect transistor comprising a drain, a source and a heterojunction.
- the heterojunction comprises a first planar layer and a second planar layer, the first layer being made of a first material and comprising a first sub-layer formed by acceptor type impurities, the second layer being made of a second material and comprising a second sublayer formed by donor-type impurities.
- the transistor also includes a current control unit between the drain and the source, the control unit being a magnetic field applicator perpendicular to the layers.
- the manufacturing method comprises a first stage of growth of the first material during which the first sub-layer is created and a second stage of growth of the second material during which the second sub-layer is created.
- FIG. 1 a schematic view of an example of a two-dimensional electron gas field effect transistor
- FIG. 2 a graph showing the two-dimensional electronic density as a function of the magnetic field for a first sample
- FIG. 3 a graph showing the two-dimensional electronic density as a function of the magnetic field for a third sample
- FIG. 4 a graph showing the current-voltage characteristic obtained in the presence of a magnetic field of distinct amplitudes for the first sample
- FIG. 5 a graph showing the current-voltage characteristic obtained in the presence of a magnetic field of distinct amplitudes for a second sample
- FIG. 6 a graph showing the current-voltage characteristic obtained in the presence of a magnetic field of distinct amplitudes and less than 3 Tesla for the third sample
- FIG. 7 a graph showing the current-voltage characteristic obtained in the presence of a magnetic field of distinct amplitudes and greater than 3 Tesla for the third sample
- - Figure 8 a graph illustrating the magnetic field dependence of the drain current for the third sample for different values of the drain voltage.
- a two-dimensional electron gas field effect transistor 10 is shown schematically in FIG.
- the transistor 10 comprises a set of layers 12, a drain 14, a source 16 and a control unit 18.
- the set of layers 12 is a set of layers 12 superimposed along a stacking direction.
- the stacking direction is symbolized by a Z axis in FIG. In the remainder of the description, the stacking direction is denoted Z stacking direction.
- the layers are planar layers extending mainly in a plane orthogonal to the stacking direction Z for defining a first transverse direction and a second transverse direction.
- the first transverse direction is symbolized by an X axis while the second transverse direction is symbolized by a Y axis.
- the first transverse direction is called the first transverse direction X and the second transverse direction is called the second transverse direction.
- Y is the first transverse direction X and the second transverse direction.
- the dimension of a layer along the stacking direction Z is called thickness.
- the set of layers 12 comprises three layers: a substrate 20 and a heterojunction 22 comprising two layers.
- Each of the two layers has a monoatomic layer of impurities.
- Substrate 20 is, for example, a semi-insulating GaAs gallium arsenide layer.
- the thickness of the substrate 20 is between 100 micrometers ( ⁇ ) and 500 ⁇ .
- the heterojunction 22 comprises a first layer 26 intended to accommodate the two-dimensional electron gas.
- the first layer 26 is made of a first material M1.
- the first material M1 is undoped GaAs gallium arsenide.
- the term "intrinsic" is often used.
- the first layer 26 comprises a first sublayer 28.
- the first sub-layer 28 is represented by dashed lines in FIG.
- the first underlayer 28 is a monoatomic layer of acceptor type impurity atom.
- the acceptor-type impurities are beryllium.
- the level of impurities in the first material M1 of the first underlayer 28 is between 4.10 10 atoms / cm 2 (cm 2 ) and 1 10 11 cm -2 .
- the level of impurities is 4.10 10 cm- 2 .
- the heterojunction 22 also comprises a second layer 30.
- the second layer 30 is made of a second material M2.
- the second material M2 is undoped gallium aluminum arsenide.
- Gallium aluminum arsenide is a group of materials generally written with AIGaAs. More precisely, these materials are written in the form Al x Ga 1 x As with x a number between 0 and 1.
- the first and second materials M1 and M2 are undoped and have band gap energies also called different gaps.
- the first material M1 is said to be a small gap whereas the second material is said to have a large gap.
- a conductive channel formed by the two-dimensional electron gas is created in the first layer 26 at the interface between the first layer 26 and the second layer 30.
- the conductive channel is two-dimensional.
- the first underlayer 28 is in the portion of the conductive channel forming part of the first layer 26.
- the distance z 0 between the first underlayer 28 and the interface between the two layers 26 and 30 is between 25 angstroms and 30 angstroms.
- the distance z 0 between the first sub-layer 28 and the interface between the two layers 26 and 30 is equal to 25 angstroms.
- the second layer 30 comprises a second sublayer 32.
- the second sub-layer 32 is represented by dotted lines in FIG.
- the second sublayer 32 is a monoatomic layer of donor-type impurity atom.
- the donor type impurities are silicon.
- the level of impurities in the second material M2 of the second sub-layer 32 is between 5.10 11 atoms / cm 2 (cm 2 ) and 7.10 11 cm -2 .
- the second sublayer 32 is capable of supplying the two-dimensional channel with electrons.
- the two-dimensional electron gas is created at the interface of the first and second layers 26 and 30 by electron transfer from the second sublayer 32.
- the space between the second sublayer 32 and the interface of the first and second layers 26 and 30 is referred to as "spacer".
- the space of the spacer has a thickness of between 200 angstroms and 500 angstroms. The thickness is, for example, equal to 400 angstroms.
- the spacer separates the "donor parents” from the two-dimensional channel electrons. Hence the term “modulated doping” sometimes used to designate this type of transistor 10.
- the drain 14 and the source 16 are metal studs or electrodes.
- the drain 14 and the source 16 make contact with the two-dimensional gas at the interface of the heterojunction 22.
- the metal studs are deposited on the first underlayer 26.
- the control unit 18 is a control unit 18 of the current between the drain 14 and the source 16.
- the control unit 18 is a magnetic field applicator 34 perpendicular to the layers.
- the magnetic field applicator 34 is thus able to apply a magnetic field in the stacking direction Z.
- the magnetic field applicator 34 is also suitable for applying a magnetic field having an amplitude greater than 1 T.
- transistor 10 The operation of transistor 10 is now described with reference to a method of generating a current by transistor 10.
- control unit 18 applies a magnetic field.
- the magnetic field causes the quantization of the electron energy of the two-dimensional gas located at the interface between the first layer 26 (first material M1) and the second layer 32 (second material M2).
- the operation of the transistor 10 is based on the existence of a channel whose conductance is modulable by action on the control unit 18 (magnetic field).
- Each sample has a GaAs / GaAlAs heterojunction.
- the first sample is undoped by impurities of the first sublayer 28 in the GaAs conductive channel, the second sample is doped in the donor channel and the third sample is doped in the acceptor channel (Be).
- a donor-doped layer is a layer usually doped with impurities from column IV and / or column VI of the periodic table, for example at least one of Si, Ge, Sn, S, Se and Te.
- the donor is silicon Si.
- the GaAs / GaAIAs heterojunction samples were obtained by molecular beam epitaxy.
- z 0 denotes the distance of the Si or Be layer of the GaAs / GaAIAs interface
- d denotes the thickness of the spacer
- N the two-dimensional electron density
- ⁇ the two-dimensional mobility of the electrons at low temperature.
- Figure 2 shows the density of conduction electrons as a function of the magnetic field measured for the first sample.
- the density oscillates substantially around the same zero magnetic field value of 2.2 ⁇ 10 11 cm 2 .
- the temperature is 1.5 K.
- Figure 3 proposes the density of conduction electrons as a function of the magnetic field for different values of the current of the third sample (acceptor Be). It is found that at fields with higher amplitudes, the electron density decreases sharply compared to the value of the electron density at zero field.
- the temperature is 4.2 K
- the current-voltage characteristics obtained in the presence of a magnetic field are illustrated for the undoped sample (first sample) and the doped sample with donors (second sample) respectively in FIGS. 4 and 5.
- the temperature is 4.2 K.
- FIGS. 4 and 5 show the typical sub-linear behavior of the drain current l d as a function of the drain voltage V d .
- Zero field sub-linearity is well known and is described by a parabolic dependence according to the following formula:
- the second term of the preceding formula plays an increasingly dominant role and the dependence of the drain current as a function of the drain voltage becomes sub-linear.
- V d drain voltage
- the drain current l d approaches saturation.
- the saturation may be due to a phenomenon of pinching of the conduction channel or saturation of the electron velocity.
- the transverse magnetic resistance effect becomes predominant and the drain current l d decreases.
- the effect of transverse magnetic resistance increases proportionally to the square of the amplitude of the magnetic field.
- the saturation current and the saturation voltage decreases due to the decrease in electron mobility at low temperatures due to collisions on impurities.
- FIGS. 4 and 5 compare with the current-voltage characteristic for the acceptor-doped sample.
- the current-voltage characteristic for the acceptor-doped sample is shown in FIG. 6 for magnetic field magnitudes below 3 Tesla (T) and in FIG. 7 for magnetic field magnitudes greater than 3 T.
- the values of saturation current and saturation voltage are lower in the case of the acceptor doped sample than in the case of the donor doped sample.
- the magnetic field has a very important effect on the saturation current and, on the other hand, the saturation current becomes constant for relatively large magnetic field amplitudes. bass.
- the magnetic field is the only factor controlling the drain current l d .
- the magnetic field dependence of the drain current I d for the acceptor doped sample is illustrated in FIG. 8 for different values of the drain voltage V d . It appears that the sensitivity of the drain current l d to the magnetic field is high for a magnetic field amplitude of between 1 T and 8 T and that the drain current l d depends only slightly on the drain voltage V d for an amplitude. magnetic field greater than 4 T.
- drain current l d for the third sample is given by the following formula:
- ⁇ R xx is the longitudinal resistance
- R xy is the resistance generated by the Hall field.
- the current-voltage characteristic with high magnetic field and at low temperature is completely flat and very stable, so that the drain current I d depends solely on the intensity of the magnetic field.
- the quality of a transistor 10 resides in particular in the fact that the saturation current does not depend or little on the 14-source drain voltage 16, the amplification by this type of transistor being more effective than the current-voltage characteristic is flat.
- a transistor 10 having an acceptor-doped heterojunction 22 operates only by applying a magnetic field in the stacking direction Z generating in the second transverse direction Y a Hall electric field.
- the Hall electric field is sufficiently high, the impurity states due to the acceptors locate one or more electrons which makes it possible to control the number of charge carriers and therefore the current.
- the transistor 10 is therefore devoid of gate, which allows among other things to avoid current leakage at the gate.
- the signal-to-noise ratio of transistor 10 is improved.
- the efficiency of transistor 10 is therefore increased.
- the magnetic field suppresses bends (also referred to as "kinks" in English) observed in the current-voltage characteristic, as can be the case, for example, for GalnAs-based TEGFETs.
- the noise level of transistor 10 is remarkably low.
- transistor 10 operating at very low current has a very low power consumption.
- the transistor 10 is insensitive to electrostatic variations and ionizing radiation due to the absence of a gate.
- the transistor 10 is adapted to operate at low temperatures, less than 20 Kelvin, typically between 4 Kelvin and 20 Kelvin.
- transistor 10 particularly suitable for space applications. More generally, such a transistor 10 is advantageously used in a low-noise amplification component under low temperature conditions. Such components are particularly used in the field of radio astronomy, space communications, satellite earth observation or spin resonance measurements.
- the component is a current source 16.
- the source 16 of current is a source 16 of very low level current and very low noise.
- the component is an electromagnetic radiation detector.
- a detector is at very high frequency in voltage, especially beyond 100 GHz.
- the component is a photocoupler.
- the photocoupler is capable of controlling the light intensity of a light-emitting diode via the modulation of an electrical voltage, especially above 10 GHz.
- the component is an optical modulator that can notably be used in the telecommunications field, for example beyond 100 GHz.
- the component is an active magnetic field sensor.
- the component is a flip-flop.
- the flip-flop serves, for example, magnetic field detector circuit breaker for high fields whose sensitivity is adjustable using a modulation of the Hall electric field.
- transistor 10 is easy.
- the method of manufacturing the transistor 10 mainly comprises a first step of growth of the first material M1 during which the first sub-layer 28 is created and a second step of growth of the second material M2 during which the second sub-layer 32 is created.
- acceptor type impurities are possible.
- the impurities are carbon.
- acceptor-type impurities depends on the first semiconductor material M1 used for the channel.
- the first material M1 and the second material M2 are semiconductor materials of columns III and V.
- the second material M2 and the first material M1 are the pair AIGaN / GaN.
- the second material M2 and the first material M1 are the AlInAs / GalnAs pair.
- the first material M1 and the second material M2 are the pair GalnAs / AIGaAs.
- the second material M2 and the first material M1 are the InAs / AISb variant.
- III-V type semiconductor is a composite semiconductor manufactured from one or more elements of column III of the periodic table of elements (boron, aluminum, gallium, indium, etc.). .) and one or more elements of column V or pnictogens (nitrogen, phosphorus, arsenic, antimony ...) ⁇
- Another material such as graphene could be used to make transistor 10.
- the first and second materials are obtained from dichalcogenide metals, in particular molybdenum disulfide whose chemical formula is MoS 2 .
- the first material M1 and the second material M2 are other semiconductor materials.
- the first material M1 has a first gap and the second material M2 has a second gap, the first gap being strictly smaller than the second gap.
- the first material M1 and the second material M2 are the pair
- column II semiconductor oxide structures such as ZnO / ZnMgO.
- the first material M1 and the second material M2 are materials forming a heterojunction 22 generating a two-dimensional electron gas.
- the second material M2 is a material whose electron energy is quantized at low temperature because of the confinement of electrons at the interface of the heterojunction. It is also understood that the quantization of energy by a magnetic field is possible at such temperatures
- control unit 18 which furthermore comprises an electric field applicator according to the second transverse direction Y.
- Such an applicator is, for example, a voltage generator, in particular continuous or at a specific frequency.
- the presence of such an electric field applicator makes it possible to increase the possibilities offered by the transistor 10.
- the magnetic field which can be constant, creates, via the Hall field, the localized states whereas the field Electrical is a modulation of the Hall field to control the drain current 14 by locating more or less and, at the desired frequency, the electrons of the two-dimensional gas.
- the transistor 10 has a better signal / noise ratio due to the absence of the gate.
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Junction Field-Effect Transistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1755935A FR3068512B1 (fr) | 2017-06-28 | 2017-06-28 | Transistor a effet de champ a gaz d'electrons bidimensionnel, composant et procedes associes |
PCT/EP2018/067393 WO2019002453A1 (fr) | 2017-06-28 | 2018-06-28 | Transistor à effet de champ à gaz d'électrons bidimensionnel, composant et procédés associés |
Publications (1)
Publication Number | Publication Date |
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EP3646388A1 true EP3646388A1 (fr) | 2020-05-06 |
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Application Number | Title | Priority Date | Filing Date |
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EP18733285.3A Withdrawn EP3646388A1 (fr) | 2017-06-28 | 2018-06-28 | Transistor à effet de champ à gaz d'électrons bidimensionnel, composant et procédés associés |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3646388A1 (fr) |
FR (1) | FR3068512B1 (fr) |
WO (1) | WO2019002453A1 (fr) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0381591A3 (fr) * | 1989-02-03 | 1991-09-04 | Fujitsu Limited | Dispositif semi-conducteur à interférences quantiques |
GB2362505A (en) * | 2000-05-19 | 2001-11-21 | Secr Defence | Magnetic Field Sensor |
-
2017
- 2017-06-28 FR FR1755935A patent/FR3068512B1/fr not_active Expired - Fee Related
-
2018
- 2018-06-28 EP EP18733285.3A patent/EP3646388A1/fr not_active Withdrawn
- 2018-06-28 WO PCT/EP2018/067393 patent/WO2019002453A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2019002453A1 (fr) | 2019-01-03 |
FR3068512B1 (fr) | 2019-08-16 |
FR3068512A1 (fr) | 2019-01-04 |
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