KR100542722B1 - Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same - Google Patents

Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same Download PDF

Info

Publication number
KR100542722B1
KR100542722B1 KR1019970059486A KR19970059486A KR100542722B1 KR 100542722 B1 KR100542722 B1 KR 100542722B1 KR 1019970059486 A KR1019970059486 A KR 1019970059486A KR 19970059486 A KR19970059486 A KR 19970059486A KR 100542722 B1 KR100542722 B1 KR 100542722B1
Authority
KR
South Korea
Prior art keywords
semiconductor device
film
poly film
etch back
back process
Prior art date
Application number
KR1019970059486A
Other languages
Korean (ko)
Other versions
KR19990039398A (en
Inventor
곽규환
윤영환
황경석
조희강
Original Assignee
삼성전자주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1019970059486A priority Critical patent/KR100542722B1/en
Publication of KR19990039398A publication Critical patent/KR19990039398A/en
Application granted granted Critical
Publication of KR100542722B1 publication Critical patent/KR100542722B1/en

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K13/00Etching, surface-brightening or pickling compositions
    • C09K13/04Etching, surface-brightening or pickling compositions containing an inorganic acid
    • C09K13/08Etching, surface-brightening or pickling compositions containing an inorganic acid containing a fluorine compound
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/18Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
    • H01L21/30Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
    • H01L21/31Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
    • H01L21/3105After-treatment
    • H01L21/311Etching the insulating layers by chemical or physical means
    • H01L21/31127Etching organic layers
    • H01L21/31133Etching organic layers by chemical means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76801Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)

Abstract

본 발명은 반도체장치 제조용 식각액 조성물 및 이를 이용한 반도체장치의 제조방법에 관한 것이다.The present invention relates to an etchant composition for manufacturing a semiconductor device and a method of manufacturing a semiconductor device using the same.

본 발명의 조성물을 이용한 반도체장치의 제조방법은, 콘택홀이 형성된 반도체기판 상에 폴리막을 형성시키는 단계; 및 상기 폴리막이 소정의 두께만큼으로 제거되도록 98중량% 내지 99.5중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물을 이용하여 에치백공정을 수행하는 단계를 구비하여 이루어짐을 특징으로 한다.A method of manufacturing a semiconductor device using the composition of the present invention includes the steps of forming a poly film on a semiconductor substrate on which contact holes are formed; And performing an etch back process using an etchant composition in which 98% by weight to 99.5% by weight of nitric acid and a residual amount of hydrogen fluoride are mixed to remove the poly film by a predetermined thickness.

따라서, 웨트에치를 이용한 폴리막의 에치백공정을 수행함으로써 이로 인한 불량을 방지하여 반도체장치의 제조수율이 향상되는 효과가 있다.Therefore, by performing an etch back process of the poly film using wet etch, defects caused by this can be prevented, thereby improving the manufacturing yield of the semiconductor device.

Description

반도체장치 제조용 식각액 조성물 및 이를 이용한 반도체장치의 제조방법Etching solution composition for manufacturing semiconductor device and manufacturing method of semiconductor device using same

본 발명은 반도체장치 제조용 식각액 조성물 및 이를 이용한 반도체장치의 제조방법에 관한 것으로서, 보다 상세하게는 질산(HNO3) 및 불화수소(HF)를 혼합한 식각액 조성물을 이용하여 폴리막(Poly Film)을 식각하는 공정을 수행하는 반도체장치 제조용 식각액 조성물 및 이를 이용한 반도체장치의 제조방법에 관한 것이다.The present invention is a, more particularly, nitric acid (HNO 3), and poly film (Poly Film) made using the etching liquid composition mixture of hydrogen fluoride (HF) as a method of manufacturing a semiconductor device manufacturing etching liquid composition and a semiconductor device using the same. An etching liquid composition for manufacturing a semiconductor device performing an etching process and a method of manufacturing a semiconductor device using the same.

일반적으로 반도체장치는 소정의 막을 형성시킨 후, 상기 소정의 막을 소자의 특성에 따른 패턴(Pattern)으로 형성시키는 공정을 수행한다.In general, a semiconductor device performs a process of forming a predetermined film and then forming the predetermined film in a pattern according to the characteristics of the device.

그리고 상기 소자의 특성에 따른 패턴형성의 공정 중에서 반도체기판 상에 콘택홀(Contact Hole)을 형성시키는 콘택공정을 주로 수행한다.In the process of forming a pattern according to the characteristics of the device, a contact process for forming a contact hole on a semiconductor substrate is mainly performed.

여기서 상기 콘택공정의 수행 후, 계속되는 후속공정의 수행시 상기 콘택홀 상에 형성시키는 소정의 막은 스텝커버리지(Step Coverage) 등이 충분히 고려되어야 한다.Here, the step coverage is to be sufficiently considered in the predetermined film formed on the contact hole after the subsequent performing of the contact process.

이에 따라 종래의 상기 콘택홀이 형성된 반도체기판 상에 폴리막 및 텅스텐실리사이드막(WSi Film)을 순차적으로 형성시키는 공정은 먼저, 콘택홀이 형성된 반도체기판 상에 2,000Å의 두께로 폴리막을 형성시킨다.Accordingly, in the process of sequentially forming a poly film and a tungsten silicide film (WSi Film) on the semiconductor substrate on which the conventional contact hole is formed, first, a poly film is formed on the semiconductor substrate on which the contact hole is formed to a thickness of 2,000 Å.

그리고 에치백(Etch Back)공정을 수행하여 1,300Å의 두께로 상기 폴리막을 제거시킨다.Then, the poly film is removed to a thickness of 1,300Å by performing an etch back process.

즉, 상기 반도체기판 상에 700Å의 두께의 폴리막이 형성되도록 에치백공정을 수행한다.That is, an etch back process is performed to form a poly film having a thickness of 700 GPa on the semiconductor substrate.

계속해서 상기 에치백공정의 수행으로 700Å의 두께로 형성된 폴리막 상에 1,500Å의 두께로 텅스텐실리사이드막을 형성시킨다.Subsequently, the tungsten silicide film is formed to a thickness of 1,500 kPa on the poly film formed to a thickness of 700 kPa by performing the etch back process.

이러한 종래의 폴리막의 에치백공정의 수행은 상기 폴리막 상에 형성되는 텅스텐실리사이드막의 스텝커버리지 등을 개선하기 위하여 수행하는 것으로써, 드라이에칭(Dry Etching Process)을 이용한 에치백공정의 수행으로 상기 폴리막을 제거시켰다.The conventional etch back process of the poly film is performed to improve the step coverage of the tungsten silicide film formed on the poly film, and the poly back by performing the etch back process using dry etching. The membrane was removed.

여기서 상기 폴리막을 제거시키는 에치백공정의 수행시 상기 드라이에칭의 특성으로 인하여 상기 폴리막의 뜯김현상이 발생하였고, 또한 상기 콘택홀의 콘택저항 등을 개선시키기 위하여 상기 폴리막에 함유시키는 보론(Boron)의 농도를 충분히 확보하지 못하였다.Here, when the etch back process of removing the poly film is carried out, the poly film is torn due to the characteristics of the dry etching, and in order to improve the contact resistance of the contact hole, boron is contained in the poly film. Insufficient concentration was obtained.

이에 따라 스텝커버리지 등을 개선시키기 위하여 수행하는 폴리막의 에치백공정에서는 상기와 같은 폴리막의 뜯김현상 등이 발생되었고, 이로 인한 불량이 빈번하게 발생하였다.Accordingly, in the etch back process of the poly film, which is performed to improve step coverage and the like, tearing of the poly film as described above occurs, and defects frequently occur.

따라서 종래의 폴리막의 에치백공정의 수행에서는 빈번하게 발생되는 불량으로 인하여 반도체장치의 제조수율이 저하되는 문제점이 있었다.Therefore, there is a problem that the manufacturing yield of the semiconductor device is lowered due to a defect frequently generated in the conventional etch back process of the poly film.

본 발명의 목적은, 폴리막의 에치백공정의 수행시 발생되는 폴리막의 뜯김현상 등으로 인한 불량을 방지함으로써 반도체장치의 제조수율을 향상시키기 위한 반도체장치 제조용 식각액 조성물 및 이를 이용한 반도체장치의 제조방법을 제공하는 데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an etching solution composition for manufacturing a semiconductor device and a method of manufacturing a semiconductor device using the same to prevent a defect due to the tearing of the poly film generated during the etch back process of the poly film. To provide.

상기 목적을 달성하기 위한 본 발명에 따른 반도체장치 제조용 식각액 조성물은, 98중량% 내지 99.5중량%의 질산 및 잔량의 불화수소가 혼합된 것을 특징으로 한다.The etching liquid composition for manufacturing a semiconductor device according to the present invention for achieving the above object is characterized in that 98% by weight to 99.5% by weight of nitric acid and the residual amount of hydrogen fluoride are mixed.

상기 질산은 그 농도가 69%이고, 상기 불화수소는 그 농도가 49%인 것이 바람직하다.Preferably, the concentration of nitric acid is 69%, and the concentration of hydrogen fluoride is 49%.

본 발명의 반도체장치의 제조방법은, 98중량% 내지 99.5중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물을 이용하여 폴리막을 식각시키는 것이 바람직하다.In the method of manufacturing a semiconductor device of the present invention, it is preferable to etch the poly film using an etching liquid composition in which 98% by weight to 99.5% by weight of nitric acid and a residual amount of hydrogen fluoride are mixed.

본 발명의 다른 반도체장치의 제조방법은, 콘택홀이 형성된 반도체기판 상에 폴리막을 형성시키는 단계; 및 상기 폴리막이 소정의 두께만큼으로 제거되도록 98중량% 내지 99.5중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물을 이용하여 에치백공정을 수행하는 단계를 구비하여 이루어짐을 특징으로 한다.Another method of manufacturing a semiconductor device of the present invention comprises the steps of: forming a poly film on a semiconductor substrate on which contact holes are formed; And performing an etch back process using an etchant composition in which 98% by weight to 99.5% by weight of nitric acid and a residual amount of hydrogen fluoride are mixed to remove the poly film by a predetermined thickness.

상기 에치백공정의 수행으로 소정의 두께만큼으로 제거된 폴리막 상에 텅스텐실리사이드막을 형성시키는 단계를 더 구비하여 이루어지는 것이 바람직하다.Preferably, the method further comprises forming a tungsten silicide film on the poly film removed by a predetermined thickness by performing the etch back process.

상기 반도체기판 상에 형성시키는 폴리막은 1,800Å 내지 2,200Å 정도의 두께로 형성시키는 것이 바람직하다.The poly film formed on the semiconductor substrate is preferably formed to a thickness of about 1,800 kPa to 2,200 kPa.

상기 에치백공정의 수행으로 폴리막이 제거되는 소정의 두께는 1,200Å 내지 1,400Å 정도의 두께인 것이 바람직하다.The predetermined thickness at which the poly film is removed by performing the etch back process is preferably about 1,200 kPa to about 1,400 kPa.

상기 에치백공정은 20℃ 내지 60℃ 정도의 온도로 공정을 수행하는 것이 바람직하다.The etchback process is preferably carried out at a temperature of about 20 ℃ to 60 ℃.

상기 에치백공정은 1초 내지 30초 정도의 시간으로 공정을 수행하는 것이 바람직하다.The etch back process is preferably performed to a time of about 1 second to 30 seconds.

상기 에치백공정은 스피너를 이용하여 수행하는 것이 바람직하다.The etch back process is preferably performed using a spinner.

상기 폴리막은 5.0ppm 내지 20.0ppm 정도의 보론이 함유되는 것이 바람직하다.The poly film preferably contains about 5.0 ppm to about 20.0 ppm of boron.

상기 텅스텐실리사이드막은 1,300Å 내지 1,700Å 정도의 두께로 형성시키는 것이 바람직하다.The tungsten silicide film is preferably formed to a thickness of about 1,300 kPa to 1,700 kPa.

상기 텅스텐실리사이드막은 화학기상증착을 이용하여 형성시키는 것이 바람직하다.The tungsten silicide film is preferably formed by chemical vapor deposition.

이하, 본 발명의 구체적인 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도1 및 도2는 본 발명에 따른 반도체장치의 제조방법의 일 실시예를 나타내는 단면도이다.1 and 2 are cross-sectional views showing one embodiment of a method of manufacturing a semiconductor device according to the present invention.

먼저, 도1은 콘택홀이 형성된 반도체기판(10) 상에 폴리막(14)이 형성되어 있는 상태를 나타내고 있고, 도2는 콘택홀이 형성된 반도체기판(10) 상에 폴리막(14) 및 텅스텐실리사이드막(16)이 순차적으로 형성된 상태를 나타내고 있는 것으로써, 에치백공정을 수행하여 상기 폴리막(14)을 소정의 두께만큼으로만 제거시킨 후, 그 상부에 텅스텐실리사이드막(16)을 형성시킨 상태이다.First, FIG. 1 illustrates a state in which a poly film 14 is formed on a semiconductor substrate 10 on which contact holes are formed, and FIG. 2 illustrates a poly film 14 and on a semiconductor substrate 10 on which contact holes are formed. Since the tungsten silicide film 16 is formed in a sequential order, the poly film 14 is removed only by a predetermined thickness by performing an etch back process, and then the tungsten silicide film 16 is disposed on the upper surface thereof. It is in a formed state.

여기서 상기 콘택홀을 형성하는 소정의 막(12)은 주로 비피에스지막(BPSG Film)이다.The predetermined film 12 forming the contact hole is mainly a BPSG film.

그리고 본 발명의 상기 폴리막(14)은 1,800Å 내지 2,200Å 정도의 두께로 형성시킬 수 있고, 실시예에서는 2,000Å의 두께가 되도록 형성시킨다. 또한 본 발명의 상기 에치백공정은 98중량% 내지 99.5중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물을 이용하여 공정을 수행할 수 있다.In addition, the poly film 14 of the present invention may be formed to a thickness of about 1,800 kPa to 2,200 kPa, and in the embodiment, the poly film 14 is formed to have a thickness of 2,000 kPa. In addition, the etchback process of the present invention may be carried out using an etching solution composition of 98% by weight to 99.5% by weight of nitric acid and the balance of hydrogen fluoride.

여기서 본 발명의 상기 식각액 조성물 즉, 질산 및 불화수소는 그 농도가 각각 69%, 49%이고, 그 혼합비는 질산 : 불화수소가 50 내지 200 : 1이 된다.Here, the etchant composition of the present invention, that is, the nitric acid and hydrogen fluoride concentration is 69%, 49%, respectively, the mixing ratio is nitric acid: hydrogen fluoride is 50 to 200: 1.

즉, 본 발명은 상기 식각액 조성물을 이용한 웨트에치(Wet Etch)로 상기 에치백공정을 수행한다.That is, the present invention performs the etch back process by wet etch (Wet Etch) using the etchant composition.

여기서 본 발명의 실시예에서는 99중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물을 이용하여 상기 에치백공정을 수행한다.Here, in the embodiment of the present invention, the etch back process is performed using an etching liquid composition in which 99% by weight of nitric acid and a residual amount of hydrogen fluoride are mixed.

그리고 본 발명의 상기 에치백공정은 20℃ 내지 60℃ 정도의 온도 및 1초 내지 30초 정도의 시간으로 공정을 수행할 수 있고, 실시예에서는 30℃의 온도 및 15초의 시간으로 공정을 수행한다.And the etchback process of the present invention may be carried out at a temperature of about 20 ℃ to 60 ℃ and a time of about 1 second to 30 seconds, in the embodiment, the process is carried out at a temperature of 30 ℃ and 15 seconds .

또한 본 발명은 상기 에치백공정을 스피너(Spinner)를 이용하여 수행할 수 있어, 상기 에치백공정을 낱장단위의 매엽식으로 수행한다.In addition, the present invention can be carried out by using a spinner (spinner), the etch back process is carried out by sheet-fed sheet.

이러한 에치백공정의 수행으로 본 발명에서는 상기 폴리막(14)을 1,200Å 내지 1,400Å 정도의 두께로 제거시킬 수 있고, 실시예에서는 상기 폴리막(14)이 1,300Å으로 제거되도록 상기 에치백공정을 수행한다.By performing such an etch back process, in the present invention, the poly film 14 may be removed to a thickness of about 1,200 kPa to about 1,400 kPa. In an embodiment, the etch back process may be performed such that the poly film 14 is removed at 1,300 kPa. Do this.

그리고 상기 반도체기판(10) 상에 형성시키는 본 발명의 폴리막(14)은 5.0ppm 내지 20.0ppm 정도로 보론을 함유시킬 수 있고, 실시예에서는 10ppm의 보론이 함유되도록 한다.In addition, the poly film 14 of the present invention formed on the semiconductor substrate 10 may contain boron at about 5.0 ppm to 20.0 ppm, and in this embodiment, 10 ppm boron is contained.

여기서 상기 보론은 확산공정을 수행하여 상기 폴리막(14)에 함유되도록 한다.In this case, the boron may be included in the poly film 14 by performing a diffusion process.

또한 본 발명은 상기 에치백공정의 수행 후, 상기 폴리막(14) 상에 텅스텐실리사이드막(16)을 화학기상증착(CVD : Chemical Vapor Deposition)을 이용하여 1,300Å 내지 1,700Å 정도의 두께로 형성시킬 수 있고, 실시예에서는 1,500Å의 두께가 되도록 형성시킨다.In addition, according to the present invention, after performing the etch back process, the tungsten silicide layer 16 is formed on the poly film 14 to a thickness of about 1,300 kPa to about 1,700 kPa by using chemical vapor deposition (CVD). In the embodiment, the thickness is 1,500 kPa.

이러한 구성으로 이루어지는 본 발명은 콘택홀이 형성된 반도체기판(10) 상에 상기 폴리막(14) 및 텅스텐실리사이드막(16)을 충분한 스텝커버리지 등을 확보하면서 형성시킬 수 있고, 종래의 드라이에치로 인한 폴리막(14)의 뜯김현상을 방지할 수 있으며, 상기 폴리막(14)에 함유되는 보론의 농도를 충분히 확보할 수 있다.According to the present invention having the above structure, the poly film 14 and the tungsten silicide film 16 can be formed on the semiconductor substrate 10 having the contact hole, while ensuring sufficient step coverage. The tearing of the poly film 14 can be prevented, and the concentration of boron contained in the poly film 14 can be sufficiently secured.

전술한 구성으로 이루어지는 본 발명의 구체적인 실시예의 작용 및 효과에 대하여 설명한다.The operation and effect of the specific embodiment of the present invention having the above-described configuration will be described.

먼저, 반도체기판(10) 상에 비피에스지막을 형성시킨 후, 콘택공정을 수행하여 콘택홀을 형성시킨다.First, a BPS film is formed on the semiconductor substrate 10, and then a contact process is performed to form a contact hole.

그리고 상기 콘택홀이 형성된 반도체기판(10) 상에 2,000Å의 두께가 되도록 폴리막(14)을 형성시킨다.The poly film 14 is formed on the semiconductor substrate 10 having the contact hole to have a thickness of 2,000 Å.

계속해서 후속공정의 수행시 형성되는 텅스텐실리사이드막(16)의 스텝커버리지 등을 확보하기 위하여 에치백공정을 수행하여 상기 폴리막(14)을 1,300Å의 두께만큼으로 제거시킨다.Subsequently, the poly film 14 is removed to a thickness of 1,300 kPa by performing an etch back process to secure step coverage of the tungsten silicide film 16 formed during the subsequent process.

즉, 상기 에치백공정의 수행으로 상기 반도체기판(10) 상의 폴리막(14)이 700Å의 두께가 된다.That is, the poly film 14 on the semiconductor substrate 10 is 700 mm thick by performing the etch back process.

여기서 상기 에치백공정은 99중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물을 이용한 웨트에치로 수행한다.Here, the etch back process is performed by wet etching using an etching liquid composition in which 99% by weight of nitric acid and a residual amount of hydrogen fluoride are mixed.

또한 상기 에치백공정은 스피너를 이용하여 30℃의 온도에서 15초의 시간으로 수행한다.In addition, the etch back process is performed using a spinner at a temperature of 30 ° C. for 15 seconds.

계속해서 화학기상증착을 이용하여 상기 폴리막(14) 상에 1,500Å의 두께로 텅스텐실리사이드막(16)을 형성시킨다.Subsequently, tungsten silicide film 16 is formed on the poly film 14 to a thickness of 1,500 kPa using chemical vapor deposition.

그리고 상기 텅스텐실리사이드막(16)을 형성시킨 후, 탈이온수(Deionized Water) 등을 이용한 세정공정을 수행한다.After the tungsten silicide layer 16 is formed, a washing process using deionized water or the like is performed.

이러한 구성으로 이루어지는 본 발명은 콘택홀이 형성된 반도체기판(10) 상에 충분한 스텝커버리지를 확보하면서 폴리막(14) 및 텅스텐실리사이드막(16)을 형성시킬 수 있다.According to the present invention having such a configuration, the poly film 14 and the tungsten silicide film 16 can be formed while ensuring sufficient step coverage on the semiconductor substrate 10 on which the contact holes are formed.

즉, 본 발명은 웨트에치를 이용한 에치백공정을 수행함으로써, 종래의 드라이에치로 인한 폴리막(14)의 뜯김현상을 방지할 수 있고, 상기 폴리막(14)의 저항을 개선하기 위하여 함유시키는 보론의 농도를 충분히 확보할 수 있다.That is, the present invention can prevent the tearing of the poly film 14 due to the conventional dry etching by performing an etch back process using wet etch, and is included to improve the resistance of the poly film 14 Enough concentration of boron can be secured.

이에 따라 본 발명은 폴리막(14)의 뜯김현상 등을 방지하면서 충분한 스텝커버리지 등을 확보할 수 있다.Accordingly, the present invention can secure sufficient step coverage while preventing the poly film 14 from being torn off.

따라서, 본 발명에 의하면 웨트에치를 이용한 폴리막의 에치백공정을 수행함으로써 이로 인한 불량을 방지하여 반도체장치의 제조수율이 향상되는 효과가 있다.Therefore, according to the present invention, by performing an etch back process of the poly film using wet etch, defects caused by this can be prevented, thereby improving the manufacturing yield of the semiconductor device.

이상에서 본 발명은 기재된 구체예에 대해서만 상세히 설명되었지만 본 발명의 기술사상 범위 내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다.Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

도1 및 도2는 본 발명에 따른 반도체장치의 제조방법의 일 실시예를 나타내는 단면도이다.1 and 2 are cross-sectional views showing one embodiment of a method of manufacturing a semiconductor device according to the present invention.

※도면의 주요부분에 대한 부호의 설명※ Explanation of symbols for main parts of drawing

10 : 반도체기판 12 : 막10 semiconductor substrate 12 film

14 : 폴리막 16 : 텅스텐실리사이드막14 poly film 16 tungsten silicide film

Claims (5)

콘택홀(Contact hole)이 형성된 반도체 기판 상에 1,800 내지 2,200Å 정도의 두께를 갖는 폴리막을 형성시키는 단계; 및Forming a poly film having a thickness of about 1,800 to 2,200 상 에 on a semiconductor substrate on which contact holes are formed; And 상기 폴리막이 1,200 내지 1,400Å의 두께만큼이 제거되도록 20 내지 60℃정도의 온도로 1 내지 30초 동안 98중량% 내지 99.5중량%의 질산 및 잔량의 불화수소가 혼합된 식각액 조성물과 스피너(spinner)를 이용하여 에치백(etch back)공정을 수행하는 단계;Etching solution composition and spinner in which 98% to 99.5% by weight of nitric acid and the remaining amount of hydrogen fluoride are mixed for 1 to 30 seconds at a temperature of about 20 to 60 ° C. so that the poly film is removed by a thickness of 1,200 to 1,400 kPa. Performing an etch back process using; 를 구비하여 이루어짐을 특징으로 하는 반도체장치의 제조방법.Method for manufacturing a semiconductor device characterized in that it comprises a. 제1 항에 있어서, 상기 에치백공정의 수행으로 소정의 두께만큼으로 제거된 폴리막 상에 텅스텐실리사이드막(WSi film)을 형성시키는 단계를 더 구비하여 이루어짐을 특징으로 하는 상기 반도체장치의 제조방법.2. The method of claim 1, further comprising forming a tungsten silicide film (WSi film) on the poly film removed to a predetermined thickness by performing the etch back process. . 제1 항에 있어서, 상기 폴리막은 5.0ppm 내지 20.0ppm 정도의 보론(boron)이 함유됨을 특징으로 하는 상기 반도체장치의 제조방법.The method of claim 1, wherein the poly film contains about 5.0 ppm to about 20.0 ppm of boron. 제2 항에 있어서, 상기 텅스텐실리사이드막은 1,300Å 내지 1,700Å 정도의 두께로 형성시킴을 특징으로 하는 상기 반도체장치의 제조방법.The method of claim 2, wherein the tungsten silicide layer is formed to a thickness of about 1,300 kPa to about 1,700 kPa. 제2 항에 있어서, 상기 텅스텐실리사이드막은 화학기상증착(CVD)을 이용하여 형성시킴을 특징으로 하는 상기 반도체장치의 제조방법.The method of claim 2, wherein the tungsten silicide layer is formed by chemical vapor deposition (CVD).
KR1019970059486A 1997-11-12 1997-11-12 Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same KR100542722B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970059486A KR100542722B1 (en) 1997-11-12 1997-11-12 Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970059486A KR100542722B1 (en) 1997-11-12 1997-11-12 Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same

Publications (2)

Publication Number Publication Date
KR19990039398A KR19990039398A (en) 1999-06-05
KR100542722B1 true KR100542722B1 (en) 2006-04-12

Family

ID=37180291

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970059486A KR100542722B1 (en) 1997-11-12 1997-11-12 Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same

Country Status (1)

Country Link
KR (1) KR100542722B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920017188A (en) * 1991-02-07 1992-09-26 문정환 Silicon Wet Etching Method
KR950021245A (en) * 1993-12-28 1995-07-26 김주용 Semiconductor device manufacturing method
KR970053411A (en) * 1995-12-22 1997-07-31 김주용 Device Separation Method of Semiconductor Device
KR0154781B1 (en) * 1995-10-31 1998-12-01 김광호 Manufacturing method of thin film transistor using wet etching
KR0175330B1 (en) * 1992-09-29 1999-02-01 김광호 Method of fabricating a semiconductor device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920017188A (en) * 1991-02-07 1992-09-26 문정환 Silicon Wet Etching Method
KR0175330B1 (en) * 1992-09-29 1999-02-01 김광호 Method of fabricating a semiconductor device
KR950021245A (en) * 1993-12-28 1995-07-26 김주용 Semiconductor device manufacturing method
KR0122525B1 (en) * 1993-12-28 1997-11-26 김주용 Fabrication method of semiconductor device
KR0154781B1 (en) * 1995-10-31 1998-12-01 김광호 Manufacturing method of thin film transistor using wet etching
KR970053411A (en) * 1995-12-22 1997-07-31 김주용 Device Separation Method of Semiconductor Device

Also Published As

Publication number Publication date
KR19990039398A (en) 1999-06-05

Similar Documents

Publication Publication Date Title
KR100475272B1 (en) Manufacturing Method of Semiconductor Device
KR100356528B1 (en) Process for production of semiconductor device
US3909325A (en) Polycrystalline etch
US7806988B2 (en) Method to address carbon incorporation in an interpoly oxide
KR100542722B1 (en) Etching liquid composition for semiconductor device manufacturing and semiconductor device manufacturing method using the same
US6596630B2 (en) Method of cleaning a silicon substrate after blanket depositing a tungsten film by dipping in a solution of hydrofluoric acid, hydrochloric acid, and/or ammonium hydroxide
KR100332109B1 (en) Method of forming a via-hole in a semiconductor device
KR20010066769A (en) Cleaning liquid
KR100280810B1 (en) Bit line formation method of semiconductor device
US20030119331A1 (en) Method for manufacturing semiconductor device
US6423646B1 (en) Method for removing etch-induced polymer film and damaged silicon layer from a silicon surface
US7501072B2 (en) Etching solution comprising hydrofluoric acid
KR100277086B1 (en) Semiconductor device and method of manufacturing the same
KR100515034B1 (en) A method for fabricating trench isolation
KR20050000208A (en) Method for removing tungsten contamination in semiconductor device employing tungsten/polysilicon gate
KR100341593B1 (en) Method for forming contact hole in semiconductor device
KR19990000064A (en) Manufacturing method of semiconductor device
KR100204421B1 (en) Method of manufacturing a mosfet
KR980012008A (en) Cleaning method of semiconductor device
KR19990009344A (en) Cleaning solution and cleaning method using the same
KR19980073441A (en) Cleaning solution and cleaning method of semiconductor device using same
KR20030055795A (en) Method of manufacturing semiconductor device
KR20020000822A (en) Method of cleaning in a semiconductor device
KR960026394A (en) Method for forming silicide film of semiconductor device
KR20010045424A (en) Method for forming contact by using spin wet etching

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090102

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee