EP1287178A1 - Procede de fabrication d'un modulateur de transmission pour microlithographie en ultraviolet profond et modulateur obtenu par ce procede - Google Patents
Procede de fabrication d'un modulateur de transmission pour microlithographie en ultraviolet profond et modulateur obtenu par ce procedeInfo
- Publication number
- EP1287178A1 EP1287178A1 EP01936569A EP01936569A EP1287178A1 EP 1287178 A1 EP1287178 A1 EP 1287178A1 EP 01936569 A EP01936569 A EP 01936569A EP 01936569 A EP01936569 A EP 01936569A EP 1287178 A1 EP1287178 A1 EP 1287178A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- modulator
- transmission
- argon
- thickness
- deep ultraviolet
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 title claims abstract description 21
- 238000001393 microlithography Methods 0.000 title claims abstract description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052786 argon Inorganic materials 0.000 claims abstract description 18
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001573 adamantine Inorganic materials 0.000 claims abstract description 8
- 230000008033 biological extinction Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 229910003481 amorphous carbon Inorganic materials 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 12
- 239000010408 film Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 4
- 230000010287 polarization Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 2
- 239000005350 fused silica glass Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000009396 hybridization Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/26—Deposition of carbon only
Definitions
- the present invention relates to the manufacture of transmission and phase modulators for deep ultraviolet microlithography and relates more particularly to the manufacture of transmission modulators with variable transmission aperture for deep ultraviolet microlithography (157 nm).
- Amorphous adamantine carbon is one of the new materials proposed for applications in deep ultraviolet microlithography.
- the technique recently proposed by Lucent Technologies makes it possible to manufacture DLC transmission modulators.
- DLC is an absorbent material, so that transmission can be modulated by varying the thickness of the DCL layer.
- the main limitation of Lucent Technologies' technique comes from an intrinsic constraint which is always present in the DLC. The stress increases with the thickness and can lead to delamination or destruction of the film. The presence of the constraint limits the thickness of the film and the attenuation of the corresponding transmission.
- the invention aims to remedy the drawbacks of the prior art set out above.
- a transmission modulator for microlithography in deep ultraviolet characterized in that it consists in obtaining amorphous adamantine carbon by a process using a plasma composed of a mixture of acetylene and argon and maintained by the power of a microwave source, in depositing a adamantine amorphous carbon thin film on a weakly absorbing substrate in the deep ultraviolet to which a variable polarization is applied, to vary the forbidden band by controlling the partial pressure of argon and thus to vary the corresponding extinction coefficient in order to modulate the transmission of the modulator without modifying the thickness of the film deposited.
- the forbidden band is varied between 1 and 2 eV by controlling the partial pressure of argon between 0 and 0.5 mTorr and preferably between 0.1 and 0.4 mTorr;
- the thickness of the film is modified by varying the duration of the deposition of said film.
- the subject of the invention is also:
- the modulator is manufactured according to the process defined above by modifying the thickness of the film in order to ensure to said transmission modulator the function of phase modulator.
- - Fig.1 is a graph representing the extinction coefficient (k) as a function of the partial pressure of argon;
- - Fig.2 is a graph showing the prohibited band Tauc and E04 as a function of the partial pressure of argon.
- - Fig.3 is a graph representing the refractive index as a function of the band gap.
- the material used in the context of the invention is amorphous adamantine carbon (diamond-like carbon, DLC).
- DLC diamond-like carbon
- sp 2 and sp 3 the mixture of different hybridization states
- the present invention aims to master the engineering of the DLC band gap with a view to optimizing its properties compared to applications in deep ultraviolet microlithography.
- the band gap engineering of the DLC is the subject of the study currently being carried out at the CNRS.
- the thin layers in DLC are deposited using plasma immersion combined with the polarization of the substrate. This controls with fineness and excellent reproductibt 'ity process parameters such as the composition of the precursor gas, the plasma density, tempera- ture and the electronic energy of the ions that reach the substrate.
- the plasma deposition is carried out at room temperature.
- the deposition process is compatible with 300 mm wafers.
- the active elements in DLC are used and the transmission of monochromatic light is modulated through a layer of DLC by varying the width of the forbidden band and the corresponding extinction coefficient.
- plasma deposition is used with a mixture of acetylene and argon.
- the energy transfer processes of the ions, the nucleation and growth dynamics of the DLC and its hybridization are modified. This allows playing on the width of the prohibited band.
- the proposed process allows you to adjust the width of the prohibited band for a given thickness in DLC.
- the phase change which accompanies the passage of a beam of monochromatic light through a thin film with a thickness d depends essentially on the refractive index (n) and on the thickness.
- the phase change can be varied by playing on l film thickness.
- the situation is more complex.
- One of the characteristics of the DLC material which is the subject of the present invention is that the refractive index evolves slowly as a function of the band gap as shown in the graph in FIG. 3.
- the active elements in DLC are used to modulate the phase change of the monochromatic light by varying the thickness of the DLC layer and possibly on the forbidden band.
- the power of the microwave source is for example from 600 to 2000 Watt.
- the gap or band gap is given by the following relation E TAUC > 1.
- the process according to the invention has the following technical advantages.
- the cost of lithography represents approximately one third of the cost of manufacturing a microprocessor.
- the development of efficient microlithography tools at low cost to the user is fundamental for the profitability of the manufacture of silicon integrated circuits.
- the technique for manufacturing optical elements for microlithography in deep UV proposed in the context of the present invention represents a very competitive solution taking into account in particular the following elements: - thermal budget (deposition at room temperature)
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Vapour Deposition (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0006521A FR2809190B1 (fr) | 2000-05-22 | 2000-05-22 | Procede de fabrication d'un modulateur de transmission pour microlithographie en ultraviolet profond et modulateur obtenu par ce procede |
| FR0006521 | 2000-05-22 | ||
| PCT/FR2001/001521 WO2001090439A1 (fr) | 2000-05-22 | 2001-05-17 | Procede de fabrication d'un modulateur de transmission pour microlithographie en ultraviolet profond et modulateur obtenu par ce procede |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1287178A1 true EP1287178A1 (fr) | 2003-03-05 |
Family
ID=8850480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01936569A Withdrawn EP1287178A1 (fr) | 2000-05-22 | 2001-05-17 | Procede de fabrication d'un modulateur de transmission pour microlithographie en ultraviolet profond et modulateur obtenu par ce procede |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20040052971A1 (fr) |
| EP (1) | EP1287178A1 (fr) |
| JP (1) | JP2003534571A (fr) |
| AU (1) | AU2001262450A1 (fr) |
| CA (1) | CA2408959A1 (fr) |
| FR (1) | FR2809190B1 (fr) |
| WO (1) | WO2001090439A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH695892A8 (it) * | 2002-10-14 | 2006-12-29 | Argor Heraeus Sa | Procedimento per la colorazione differenziata dl oggetti metallici mediante un getto dl plasma dl carbonio |
| US7079306B2 (en) | 2003-08-22 | 2006-07-18 | Plex Llc | Optically addressed extreme ultraviolet modulator and lithography system incorporating modulator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4777090A (en) * | 1986-11-03 | 1988-10-11 | Ovonic Synthetic Materials Company | Coated article and method of manufacturing the article |
| US5470661A (en) * | 1993-01-07 | 1995-11-28 | International Business Machines Corporation | Diamond-like carbon films from a hydrocarbon helium plasma |
-
2000
- 2000-05-22 FR FR0006521A patent/FR2809190B1/fr not_active Expired - Fee Related
-
2001
- 2001-05-17 AU AU2001262450A patent/AU2001262450A1/en not_active Abandoned
- 2001-05-17 JP JP2001586632A patent/JP2003534571A/ja active Pending
- 2001-05-17 EP EP01936569A patent/EP1287178A1/fr not_active Withdrawn
- 2001-05-17 CA CA002408959A patent/CA2408959A1/fr not_active Abandoned
- 2001-05-17 WO PCT/FR2001/001521 patent/WO2001090439A1/fr not_active Ceased
- 2001-05-17 US US10/296,053 patent/US20040052971A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0190439A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2809190A1 (fr) | 2001-11-23 |
| CA2408959A1 (fr) | 2001-11-29 |
| AU2001262450A1 (en) | 2001-12-03 |
| US20040052971A1 (en) | 2004-03-18 |
| JP2003534571A (ja) | 2003-11-18 |
| FR2809190B1 (fr) | 2002-08-09 |
| WO2001090439A1 (fr) | 2001-11-29 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
Effective date: 20021115 |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PELLETIER, JACQUES HENRI LUCIEN Inventor name: ARNAL, YVES, ALBAN, MARIE Inventor name: LACOSTE, ANA Inventor name: PIAZZA, FABRICE Inventor name: GOLANSKI, ANDRE |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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| 18W | Application withdrawn |
Effective date: 20070407 |