WO2006013898A1 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- WO2006013898A1 WO2006013898A1 PCT/JP2005/014220 JP2005014220W WO2006013898A1 WO 2006013898 A1 WO2006013898 A1 WO 2006013898A1 JP 2005014220 W JP2005014220 W JP 2005014220W WO 2006013898 A1 WO2006013898 A1 WO 2006013898A1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000012535 impurity Substances 0.000 claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 230000003213 activating effect Effects 0.000 claims abstract description 13
- 230000004913 activation Effects 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 27
- 239000010703 silicon Substances 0.000 claims description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 26
- 238000002844 melting Methods 0.000 claims description 21
- 230000008018 melting Effects 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 230000001678 irradiating effect Effects 0.000 claims description 9
- 229910052721 tungsten Inorganic materials 0.000 claims description 9
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical group [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical group [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 238000000137 annealing Methods 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 229910052814 silicon oxide Inorganic materials 0.000 description 13
- 239000007787 solid Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 229910021419 crystalline silicon Inorganic materials 0.000 description 8
- 238000005468 ion implantation Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000002310 reflectometry Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
- 230000031700 light absorption Effects 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000059 patterning Methods 0.000 description 4
- 238000005280 amorphization Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005224 laser annealing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000006117 anti-reflective coating Substances 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
- 239000012159 carrier gas Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002294 plasma sputter deposition Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229920006268 silicone film Polymers 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/22—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities
- H01L21/223—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities using diffusion into or out of a solid from or into a gaseous phase
- H01L21/2236—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities using diffusion into or out of a solid from or into a gaseous phase from or into a plasma phase
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/268—Bombardment with radiation with high-energy radiation using electromagnetic radiation, e.g. laser radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66575—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28035—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities
- H01L21/28044—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer
- H01L21/28061—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer the conductor comprising a metal or metal silicide formed by deposition, e.g. sputter deposition, i.e. without a silicidation reaction
Definitions
- the present invention relates to a method for manufacturing a semiconductor device, and more particularly to introduction of impurities into a source / drain region of a transistor and activation activity.
- a shallow junction can be formed using this ion implantation method, there is a limit to the depth that can be formed by ion implantation.
- boron impurities are shallow and difficult to introduce, and in ion implantation, the depth of the introduction region is limited to a substrate surface force of about lOnm.
- This plasma doping is a technique in which a reaction gas containing an impurity to be introduced is excited by plasma and the surface of the solid substrate is irradiated with plasma to introduce the impurity. Then, after the impurities are introduced, the introduced impurities are activated by an annealing process.
- Typical targets for 45nm technology nodes have a sheet resistance of 1000 ⁇ / sq or less and a junction depth of lOnm or less.
- a melt annealing method using a high power pulsed laser has been proposed.
- the impurity introduction layer can be melted with a pulsed laser and an extremely shallow and steep junction can be formed by instantaneous diffusion in the molten region.
- a source and a drain into which impurities are introduced are formed near the surface of the solid substrate, a gate insulating film is formed on the substrate surface between the source and the drain, and a gate electrode is further formed thereon.
- the melt-type laser annealing method as described above causes the pattern accuracy to deteriorate due to the deformation of the pattern due to the melting of the gate and the melting of the channel part under the gate insulating film simultaneously with the activation of the impurity introduction layer, and the process window is reduced. There was a problem of narrowing.
- Non-Patent Document 1 and Patent Document 1 described above are formed by forming a uniform thickness of the same type of absorption layer or antireflection film in the transistor region, thereby increasing the activity ratio. Although it can, at the same time, the temperature of the gate part is increased, so the deformation of the pattern due to melting of the gate part has not been solved.
- Non-patent literature l Electrochem. Soc. Symp. Proc, vol. 2000-9 (2000) p95-106.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-168645
- the present invention has been made in view of the above circumstances, and it is possible to efficiently perform the activation of the impurity-introduced region, that is, the impurity-introduced layer, and to suppress melting of the gate portion, thereby achieving high accuracy and reliability.
- An object of the present invention is to provide a high voltage transistor.
- the selective absorption modulation method is used as annealing means. That is, by selectively forming an antireflection film between the impurity-introduced region and the gate electrode, the light absorption rate of the gate electrode is made smaller than that of the impurity introduction layer. As a result, it was discovered that efficient activation of the impurity introduction layer and suppression of melting of the gate portion (non-melt) can be realized at the same time.
- the method of the present invention includes a step of forming a gate electrode on a surface of a semiconductor substrate, a step of introducing an impurity so as to sandwich the gate electrode, and a step of activating the impurity.
- the step of introducing the impurity includes a plasma irradiation step, and the active Prior to the step, the antireflection film is formed on the surface of the region where the impurity is introduced so that the light reflectance of the region where the impurity is introduced is smaller than the reflectance of the surface of the gate electrode.
- the light reflection preventing film is selectively formed in the region that becomes the source and drain regions, by selectively irradiating the region that becomes the source and drain regions, Since the impurities are activated efficiently, the activation can be performed without irradiating light with a large energy enough to melt the gate portion. The prevention of melting of the gate portion can be realized at the same time, and a highly accurate and highly efficient transistor can be formed.
- the method of the present invention includes a step of forming a reflective film on the gate electrode prior to the step of activating.
- the step of introducing the impurity includes a step of introducing an impurity by plasma doping.
- a shallower source / drain region can be formed, and a region doped with impurities by plasma doping can be activated with high efficiency with a higher light absorption rate.
- the amount can be reduced and the melting of the gate portion can be suppressed.
- the step of irradiating the plasma includes a step of making the surface of the semiconductor substrate amorphous by plasma irradiation.
- the light absorptivity of the region into which the impurity has been introduced can be increased by performing the process of making it amorphous with plasma prior to doping with the impurity. Therefore, since it can be activated with high efficiency, the total energy irradiation amount can be reduced, and the melting of the gate electrode can be suppressed.
- the method of the present invention includes a method in which the antireflection film is formed so as to have different film thicknesses in the impurity-introduced region and the gate electrode.
- the antireflection film is formed on the gate electrode and the region where the source and drain are formed.
- the optical absorptance of the region into which the impurity is introduced can be made higher than that on the gate electrode. Accordingly, since it can be activated with high efficiency, the total energy irradiation amount can be reduced, and melting of the gate portion can be suppressed.
- the method of the present invention includes a step of irradiating light having a wavelength of 300 nm or more and lOOnm or less.
- annealing is performed using light having a wavelength of 300 nm or more and l lOOnm or less, so that the reflectance can be further lowered.
- the step of activating includes the step of irradiating light including a wavelength of 400 nm or less.
- annealing is performed using light having a wavelength of 400 nm or less, so that the reflectance can be further lowered.
- the method of the present invention includes a method in which the antireflection film is a translucent film having a refractive index lower than the refractive index of the region into which the impurity is introduced.
- the reflectance can be lowered by utilizing the interference of the light-transmitting film having a refractive index lower than the refractive index of the region corresponding to the source and drain into which the impurity is introduced.
- Translucent films such as Si N, Nitrate-Nitride-silicone film SiON are especially compatible with device processes
- the method of the present invention includes a method in which the antireflection film is a dielectric multilayer film in which two types of low / high refractive index dielectric films are alternately laminated.
- the reflectivity When there is only a single Si02 layer, there is a limit to the reflectivity.
- the method of the present invention includes a method in which the reflective film is a metal film having a melting point of 1410 ° C or higher.
- a metal film having a melting point of 1410 ° C or higher, which is the melting point of crystalline silicon, is It is desirable because it has high reflectivity and is difficult to melt.
- the metal film is tungsten (W)
- the activating step includes a step of using light having a wavelength of 410 nm or more.
- the reflectance is higher than that of crystalline silicon for light having a wavelength of 410 nm or more.
- the metal film is tantalum (Ta)
- the activating step includes a step of using light having a wavelength of 600 nm or more.
- the reflectance is higher than that of crystalline silicon for light having a wavelength of 600 nm or more.
- the metal film is titanium nitride (TiN), and the step of activating includes a step of using light having a wavelength of 510 nm or more.
- the reflectance is higher than that of crystalline silicon for light with a wavelength of 510 nm or more.
- the antireflection film includes an oxide silicon film.
- An antireflection film can be formed very easily by adjusting the film thickness of silicon oxide.
- FIG. 1 is a diagram showing a plasma doping apparatus used in Embodiment 1 of the present invention.
- FIG. 2 is a manufacturing process diagram of a transistor according to Embodiment 1 of the present invention.
- FIG. 3 is a manufacturing process diagram of a transistor according to Embodiment 2 of the present invention.
- FIG. 4 Diagram showing reflectivity for each wavelength in a transistor in which an antireflection film is formed after boron impurities are introduced by plasma doping and ion implantation.
- FIG. 6 A plot of sheet resistance versus laser energy density when an oxide silicon film is formed and when an 85 nm thick oxide silicon film is formed.
- FIG. 7 Diagram showing reflectance versus wavelength when a high-melting-point metal W, Ta, or TiN film is formed on the gate electrode.
- plasma doping is performed on the surface of the silicon substrate on which the gate electrode is formed in the step of introducing impurities for forming the source and drain regions.
- the light reflectance of the region into which the impurity has been introduced is small.
- a step of forming an antireflection film to include
- the doping apparatus used in this embodiment includes a vacuum chamber 200 and a plasma source 220 that excites plasma in the vacuum chamber 200 and is placed on a substrate holder 260.
- plasma doping is performed on the surface of the solid substrate 100 as the substrate to be processed.
- a vacuum pump 240 is connected to the vacuum chamber 200, a vacuum gauge 230 for vacuum measurement is installed, and a power source 250 is connected to the plasma source 220.
- a power source 270 for applying a unique electric potential is connected to the substrate holder 260 separately from the aforementioned power source.
- the vacuum chamber 200 is provided with a gas introduction mechanism for introducing these gases.
- This gas introduction mechanism is the first substance as a dopant substance (in this case B H
- a second line 290 (in this case He) for supplying a second substance, which is another substance.
- a dopant substance as a first substance is supplied to the vacuum chamber 200.
- a dopant substance and other different substances are introduced as a carrier gas.
- a gas that has a different property from the dopant material such as a rare gas (having a different mass), and a material that is not electrically active in silicon is selected.
- An example is He. He was selected as the other second substance.
- the gas introduction line force composed of the first and second lines 280 and 290 described above also introduces a gas to generate a plasma 210 on the surface of the solid substrate 100 in the vacuum chamber 200.
- This plasma doping apparatus is used to perform impurity doping for forming the source / drain regions of the transistor.
- a gate electrode 340 made of a silicon film is formed.
- a tungsten film (thickness 60 nm) is formed as the reflective film 410 on the gate electrode 340, and is patterned simultaneously with the patterning of the gate electrode. Then, it is set in the plasma doping apparatus shown in FIG. 1, and plasma doping is performed using the gate electrode 340 as a mask as shown in FIG. 2 (a).
- an antireflection film 400 made of an oxide silicon film having a thickness of about 90 nm is formed by plasma CVD, sputtering, or ion plating, and the key shown in FIG. —Set it on the laser device and irradiate light with a wavelength of 530 nm using an annealing light source 500 as shown in FIG.
- an antireflection film is also formed on the gate electrode, but the resist used for patterning the gate electrode is left as it is. By performing the lift-off, the antireflection film on the gate electrode is removed.
- the impurity introduction layer in the source and drain regions can be activated well, and at the same time, the gate electrode and the channel part can be prevented from melting, and the shape and quality can be maintained, with high accuracy and reliability. Can be realized with a high yield.
- the silicon oxide film may be formed to a thickness sufficient to cover the gate electrode, and the silicon oxide film on the gate electrode may be removed by CMP or resist etch back.
- FIGS. 3A to 3C are schematic views showing the method of the second embodiment.
- a reflection film is formed on the surface of the gate electrode, and an acid silicon film as an antireflection film is formed on the surface of the semiconductor substrate that becomes the source and drain regions, and the rolling is performed.
- the antireflection film 400 is also formed on the surface of the semiconductor substrate that becomes the source / drain region on the gate electrode, and the thickness thereof is made thinner on the gate electrode, so that the gate electrode is formed. Light absorption is suppressed, temperature rise of the gate electrode portion is suppressed, and melting of the gate is suppressed.
- a gate oxide film 330 made of an oxide silicon film and a gate electrode 340 made of a doubly crystalline silicon film are formed on the surface of the silicon substrate 300.
- patterning of the gate electrode is performed through a hard mask made of the silicon oxide film 400, and is set in a conventional plasma doping apparatus without removing the hard mask, and plasma doping is performed using the gate electrode 340 as a mask. (Fig. 3 (a)).
- an antireflection film 400 made of an oxide silicon film having a thickness of about 120 nm is formed in a region that becomes a source / drain region by CVD or the like without removing the hard mask, and then the gate electrode is formed by CMP. A part of the upper silicon oxide film is removed to perform planarization. As a result, an antireflection film 400 having a thickness (dl> d2) of (dl> d2) is formed in the source / drain region where the thickness d2 is smaller on the gate electrode (FIG. 3 (b)).
- the source / drain region is formed by forming an oxide silicon film on the upper layer while leaving the oxide silicon film used as a hard mask and flattening it by CMP.
- the force of forming a thin silicon oxide film is used without using a hard mask, and the gate electrode is patterned, and an antireflection film made of an oxide silicon film is formed by the same process. You can make it! ⁇ .
- a two-layer film of an oxide silicon film and a silicon nitride film may be used as a hard mask.
- patterning of the gate electrode is performed through a hard mask composed of a two-layer film of an oxide silicon film and a silicon nitride film, and the gate electrode 340 is set in a conventional plasma doping apparatus without removing the hard mask. Using this as a mask, plasma doping is performed.
- an antireflection film 400 made of an oxide silicon film having a thickness of about 90 nm in a region that becomes a source / drain region by CVD or the like without removing the hard mask the upper layer side of the node mask The silicon nitride film, which is the first film, is removed, and the antireflection film 400 on the gate electrode is also lifted off.
- an antireflection film having a large film thickness dl (dl> d2) can be formed in a region which becomes a source / drain region having a smaller film thickness d2 on the gate electrode.
- annealing may be performed with the silicon nitride film remaining as necessary.
- the antireflection film 400 having a thickness of dl is formed on the regions to be the source region 310 and the drain region 320, and the antireflection film 400 having a thickness of d2 is formed on the gate electrode 340. Then, it is activated by the annealing light source 500.
- the thicknesses dl and d2 so that the reflectivity at the surface of the region that becomes the source and drain regions is lower than that on the gate electrode, a good impurity introduction layer in the source and drain regions can be obtained. At the same time as activation, it is possible to maintain high precision gate dimensions.
- boron is introduced as an impurity by plasma doping (referred to as PD) and ion implantation (referred to as ⁇ ), respectively.
- PD plasma doping
- ⁇ ion implantation
- a step of amorphizing with plasma is performed before the step of introducing impurities with plasma, whereby the light absorptance of the region into which impurities are introduced is obtained. Can be raised.
- the surface of the region into which impurities are introduced is made amorphous to reduce the reflectivity. That is, an amorphous silicon film as an antireflection film is formed after amorphization by He plasma (referred to as He-PA) and Ge ion implantation (referred to as Ge-PA), respectively. Do the same as in (2) and (2). The rest is the same as in the first and second embodiments.
- He-PA He plasma
- Ge-PA Ge ion implantation
- Curves a and b show the relationship with reflectance for each wavelength.
- the value obtained from the calculated value based on the film thickness was used as the reflectance.
- the optical properties of the He-PA layer and Ge-PA layer of the amorphous layer of the same depth (12 nm) were measured, and the reflectance was calculated using multilayer calculation software. In the wavelength region from 300 nm to l lOOnm, it was found that He-PA can obtain a lower reflectance than Ge-PA, and is therefore more effective.
- Embodiment 4 of the present invention impurity boron is introduced into an n-type silicon substrate by a plasma doping method in order to confirm a change in the state after annealing due to the presence or absence of an antireflection film, and then a plasma CVD method is performed thereon.
- a plasma CVD method is performed thereon.
- annealing was performed with a laser with a wavelength of 530 nm.
- Curves a and b are plotted in Fig. 6 for the results of plotting the sheet resistance versus laser energy density when the silicon oxide film is not formed and when the silicon oxide film is formed with a thickness of 90 nm.
- the energy density of the laser capable of obtaining a sheet resistance of 340ohm / sq could be reduced from 1500m J / cm 2 to 1100 mj / cm 2 . .
- the reduction rate of energy density was about 27%. This result suggests that the reflectance can be adjusted by adjusting the thickness of the silicon oxide film, which is an antireflection film.
- Embodiment 5 of the present invention the calculated values of reflectance versus wavelength when a tungsten W layer, a tantalum Ta layer, and a titanium nitride TiN layer are formed as metal layers on the gate electrode surface on the gate electrode surface are as follows. Show. Curves a, b, and c in Fig. 7 show the results of measuring the relationship between the wavelength and reflectance for W, Ta, and TiN, respectively. For comparison, the reflectance value for each wavelength of crystalline silicon (c-Si) is also shown by curve s. When high melting point metals W, Ta, and TiN are attached on the gate electrode, a higher reflectance than that of crystalline silicon constituting the gate electrode can be obtained at wavelengths of 410 nm, 600 nm, and 510 nm, respectively.
- the method for manufacturing a transistor using selective absorption modulation according to the present invention is effective for forming a shallow and low-resistance junction, reducing activation energy, lowering the annealing temperature, and preventing gate deformation.
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/659,197 US20090023262A1 (en) | 2004-08-04 | 2005-08-03 | Method for fabricating semiconductor device |
JP2006531521A JPWO2006013898A1 (ja) | 2004-08-04 | 2005-08-03 | 半導体装置の製造方法 |
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JP2004228198 | 2004-08-04 | ||
JP2004-228198 | 2004-08-04 |
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US (1) | US20090023262A1 (ja) |
JP (1) | JPWO2006013898A1 (ja) |
CN (1) | CN1993818A (ja) |
TW (1) | TW200609985A (ja) |
WO (1) | WO2006013898A1 (ja) |
Cited By (2)
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---|---|---|---|---|
JP2008021827A (ja) * | 2006-07-13 | 2008-01-31 | Renesas Technology Corp | 半導体装置の製造方法 |
JP2014060423A (ja) * | 2006-03-08 | 2014-04-03 | Applied Materials Inc | 基板に形成された熱処理構造用の方法および装置 |
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JP6560653B2 (ja) | 2015-12-21 | 2019-08-14 | アイメック・ヴェーゼットウェーImec Vzw | 細長いナノスケール構造の選択加熱方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07115072A (ja) * | 1993-10-15 | 1995-05-02 | Sony Corp | 半導体装置の製造方法 |
JP2004087583A (ja) * | 2002-08-23 | 2004-03-18 | Seiko Epson Corp | 半導体装置及びその製造方法並びに薄膜の熱処理方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3535871B2 (ja) * | 2002-06-13 | 2004-06-07 | キヤノン株式会社 | 電子放出素子、電子源、画像表示装置及び電子放出素子の製造方法 |
US20060024938A1 (en) * | 2004-07-29 | 2006-02-02 | Texas Instruments, Incorporated | Method for reducing metal silicide excessive encroachment defects in the manufacture of a semiconductor device having silicided source/drain regions |
-
2005
- 2005-08-03 JP JP2006531521A patent/JPWO2006013898A1/ja not_active Withdrawn
- 2005-08-03 US US11/659,197 patent/US20090023262A1/en not_active Abandoned
- 2005-08-03 WO PCT/JP2005/014220 patent/WO2006013898A1/ja active Application Filing
- 2005-08-03 CN CNA2005800264615A patent/CN1993818A/zh active Pending
- 2005-08-04 TW TW094126519A patent/TW200609985A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07115072A (ja) * | 1993-10-15 | 1995-05-02 | Sony Corp | 半導体装置の製造方法 |
JP2004087583A (ja) * | 2002-08-23 | 2004-03-18 | Seiko Epson Corp | 半導体装置及びその製造方法並びに薄膜の熱処理方法 |
Non-Patent Citations (2)
Title |
---|
SASAKI Y ET AL: "B2H6 Plasma Doping with "In-situ He Pre-amorphization"", 2004 SYMPOSIUM ON VLSI TECHNOLOGY DIGEST OF TECHNICAL PAPERS., 15 June 2004 (2004-06-15) - 17 June 2004 (2004-06-17), pages 180 - 181, XP010732853 * |
TSUKAMOTO H ET AL: "Selective Annealing Utilizing Single Pulse Excimer Laser Irradiation for Short Channel Metal-Oxide-Semiconductor Field-Effect Transistors.", JPN J APPL PHYS., vol. 32, 15 July 1993 (1993-07-15), pages L967 - L970, XP000487408 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014060423A (ja) * | 2006-03-08 | 2014-04-03 | Applied Materials Inc | 基板に形成された熱処理構造用の方法および装置 |
JP2008021827A (ja) * | 2006-07-13 | 2008-01-31 | Renesas Technology Corp | 半導体装置の製造方法 |
Also Published As
Publication number | Publication date |
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US20090023262A1 (en) | 2009-01-22 |
JPWO2006013898A1 (ja) | 2008-05-01 |
CN1993818A (zh) | 2007-07-04 |
TW200609985A (en) | 2006-03-16 |
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