JP5022828B2 - Draining agent for substrate, draining method and drying method using the same - Google Patents
Draining agent for substrate, draining method and drying method using the same Download PDFInfo
- Publication number
- JP5022828B2 JP5022828B2 JP2007222100A JP2007222100A JP5022828B2 JP 5022828 B2 JP5022828 B2 JP 5022828B2 JP 2007222100 A JP2007222100 A JP 2007222100A JP 2007222100 A JP2007222100 A JP 2007222100A JP 5022828 B2 JP5022828 B2 JP 5022828B2
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- draining
- pattern
- water
- agent
- 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.)
- Expired - Fee Related
Links
Landscapes
- Cleaning Or Drying Semiconductors (AREA)
Description
この発明は、半導体基板や液晶用基板等の被処理基板(以下、単に「基板」とも称する。)の水切り剤、水切り方法及びそれを用いた乾燥方法に関する。 The present invention relates to a draining agent, a draining method, and a drying method using the draining agent for a substrate to be processed (hereinafter also simply referred to as “substrate”) such as a semiconductor substrate or a liquid crystal substrate.
一般に、半導体生産プロセスにおいては、洗浄された基板を乾燥する乾燥工程が備えられている。この乾燥工程を実現する乾燥方法としては、基板を回転させてその遠心力により基板上の水滴を吹き飛ばす方法(特許文献1、2参照)や、イソプロピルアルコールのベーパー(蒸気)雰囲気中に置いて、基板の水とイソプロパノールとの置換により脱水する方法が記載されている。また、イソプロパノールの替わりに、各種含フッ素アルコールや含フッ素エーテルに関する提案が記載されている(特許文献3〜11参照)。 In general, a semiconductor production process includes a drying step for drying a cleaned substrate. As a drying method for realizing this drying step, a method of rotating a substrate and blowing water droplets on the substrate by its centrifugal force (see Patent Documents 1 and 2), or placing it in a vapor (vapor) atmosphere of isopropyl alcohol, Described is a method of dehydrating by substituting substrate water with isopropanol. Moreover, the proposal regarding various fluorine-containing alcohol and fluorine-containing ether is described instead of isopropanol (refer patent documents 3-11).
しかしながら、これら従来技術では、乾燥に時間がかかったり、水残りによる跡がついたりする問題が、充分には解決出来ていなかった。更に近年は、半導体の性能向上のため、基板表面により複雑な構造を形成することが求められ、特に高さ(又は深さ)/短辺(又は直径)のアスペクト比が50以上のような高アスペクト柱状(又は円柱状)及び/又は高アスペクトホール状の構造が必要になってきている。このような基板に対しては従来技術ではその柱状又は円柱状の構造が乾燥時に倒れたり、破壊されたり、ホール状の構造中の洗浄性が劣り、ウォーターマークや洗浄不良が発生するという問題が発生してきている。
したがって、本発明は上述した課題を解決するためになされたもので、基板の破壊や汚れを発生することなく、基板から水切りを行い、乾燥を効率よく行うことを目的としている。
However, these conventional techniques have not been able to sufficiently solve the problem that it takes time to dry or a trace due to water residue. Further, in recent years, in order to improve the performance of semiconductors, it is required to form a complicated structure on the substrate surface, and in particular, the aspect ratio of height (or depth) / short side (or diameter) is as high as 50 or more. Aspect columnar (or columnar) and / or high aspect hole structures are needed. For such a substrate, there is a problem in the prior art that the columnar or columnar structure collapses or is destroyed during drying, the cleaning property in the hole-shaped structure is inferior, and a watermark or poor cleaning occurs. It is occurring.
Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to drain water from a substrate and efficiently dry the substrate without causing destruction or contamination of the substrate.
このような目的に対し、本発明者が誠意検討した結果、下記1)、2)、3)又は6)の手段を用いることで問題が解決できることを見出した。それぞれの好ましい実施態様4)及び5)と共に記す。
1)1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールを成分とする、基板上に柱状パターン及び/又はホール状パターンを有する基板用水切り剤、
2)1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールを成分とする、基板上に高さ/直径のアスペクト比が50以上の円柱状パターン、及び/又は、深さ/直径のアスペクト比が50以上の円形ホール状パターンを有する基板用水切り剤、
3)1)又は2)に記載の水切り剤を用いて水切りを行う方法、
4)該柱状パターン及び/又は該ホール状パターンの直径が10〜100nmである3)記載の水切りを行う方法、
5)該基板が、金属、金属酸化物及び金属窒化物よりなる群から選ばれた3)記載の水切りを行う方法、
6)3)〜5)のいずれか1つに記載の方法により水切りをした後に該基板を乾燥する乾燥工程を含む基板の乾燥方法。
As a result of sincerity studies by the present inventors for such purposes, it has been found that the problem can be solved by using the means of 1), 2), 3) or 6) below. It is described together with each preferred embodiment 4) and 5).
1) A draining agent for a substrate having a columnar pattern and / or a hole-shaped pattern on a substrate, comprising 1,1,1,3,3,3-hexafluoro-2-propanol as a component,
2) a cylindrical pattern having 1,1,1,3,3,3-hexafluoro-2-propanol as a component and having a height / diameter aspect ratio of 50 or more and / or depth / A draining agent for a substrate having a circular hole pattern having an aspect ratio of a diameter of 50 or more,
3) A method for draining water using the drainer described in 1) or 2),
4) The method for draining water according to 3), wherein the diameter of the columnar pattern and / or the hole-shaped pattern is 10 to 100 nm,
5) The method for draining water according to 3), wherein the substrate is selected from the group consisting of metal, metal oxide and metal nitride,
6) A substrate drying method including a drying step of drying the substrate after draining by the method according to any one of 3) to 5).
本発明によれば、被処理基板の水切れが良好であり、乾燥後に水滴跡(ウォーターマーク)や汚れがない被処理基板を得ることができる。 ADVANTAGE OF THE INVENTION According to this invention, the to-be-processed board | substrate is favorable and can obtain the to-be-processed substrate which does not have a water drop trace (watermark) and dirt after drying.
以下、本発明について詳細に説明する。
本発明に用いる1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールは、単独で使用しても良く、これと相溶する他の化合物と併用しても良い。併用する化合物としては、1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールと室温において相互に完全に溶解する化合物が好ましく、中でもフッ素原子を含まないアルコール(例えば、メチルアルコール、エチルアルコール、プロピルアルコール、イソプロパノール、ブチルアルコール)、フッ素含有エーテル(例えば、メチルノナフルオロイソブチルエーテル、メチルノナフルオロブチルエーテル、トリフルオロエチルメチルエーテル、トリフルオロエチルジフルオロメチルエーテル、ペンタフルオロプロピルメチルエーテル、ペンタフルオロプロピルジフルオロメチルエーテル、ペンタフルオロプロピルテトラフルオロエチルエーテル、トリフルオロエチルメチルエーテル、テトラフルオロエチルエチルエーテル、テトラフルオロエチルトリフルオロエチルエーテル、テトラフルオロプロピルジフルオロメチルエーテル、テトラフルオロエチルテトラフルオロプロピルエーテル、ヘキサフルオロイソプロピルメチルエーテル、1,1,3,3,3−ペンタフルオロ−2−(トリフルオロメチル)プロピルメチルエーテル、ヘキサフルオロプロピルメチルエーテル、ヘキサフルオロプロピルエチルエーテル、ヘキサフルオロブチルジフルオロメチルエーテル)、フッ素系炭素化合物(例えば、パーフルオロペンタン、パーフルオロヘキサン、パーフルオロヘプタンなど)、水が好ましく、フッ素原子を含まないアルコールが特に好ましく、イソプロパノールが最も好ましい。併用する場合、1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールの含有量は、水切りに使用する際に、10重量%以上が好ましく、50重量%以上が特に好ましい。また、これら含有量の同じ条件及び/又は異なる状態で複数回にわたり、水切り処理しても良い。基板洗浄用水切り剤は濃縮液として供給し、使用時に希釈して使用してもよい。
各種含フッ素化合物および含フッ素エーテル化合物の中で、本発明の化合物が好ましいのは、おそらく水に対する溶解度と表面張力の関係が適切であるためと考えられる。
Hereinafter, the present invention will be described in detail.
1,1,1,3,3,3-Hexafluoro-2-propanol used in the present invention may be used alone or in combination with other compounds compatible with it. As the compound to be used in combination, 1,1,1,3,3,3-hexafluoro-2-propanol and a compound that completely dissolves each other at room temperature are preferable. Among them, an alcohol containing no fluorine atom (for example, methyl alcohol, Ethyl alcohol, propyl alcohol, isopropanol, butyl alcohol), fluorine-containing ethers (eg methyl nonafluoroisobutyl ether, methyl nonafluorobutyl ether, trifluoroethyl methyl ether, trifluoroethyl difluoromethyl ether, pentafluoropropyl methyl ether, pentafluoro Propyl difluoromethyl ether, pentafluoropropyl tetrafluoroethyl ether, trifluoroethyl methyl ether, tetrafluoroethyl ethyl ether, tetrafluoro Oroethyl trifluoroethyl ether, tetrafluoropropyl difluoromethyl ether, tetrafluoroethyl tetrafluoropropyl ether, hexafluoroisopropyl methyl ether, 1,1,3,3,3-pentafluoro-2- (trifluoromethyl) propylmethyl Ether, hexafluoropropyl methyl ether, hexafluoropropyl ethyl ether, hexafluorobutyl difluoromethyl ether), fluorine-based carbon compounds (for example, perfluoropentane, perfluorohexane, perfluoroheptane, etc.), water is preferable, and fluorine atoms are Alcohol free is particularly preferred and isopropanol is most preferred. When used in combination, the content of 1,1,1,3,3,3-hexafluoro-2-propanol is preferably 10% by weight or more, particularly preferably 50% by weight or more when used for draining. Moreover, you may perform the draining process over multiple times on the same conditions and / or different states of these content. The draining agent for cleaning the substrate may be supplied as a concentrated liquid and diluted before use.
Among various fluorine-containing compounds and fluorine-containing ether compounds, the compound of the present invention is preferable because the relationship between the solubility in water and the surface tension is appropriate.
本発明で使用する水切り剤を被処理基板と接触させ水切りを行う方法は、特に限定されるものではなく、被処理基板を水切り剤に浸漬したり、あるいは被処理基板に水切り剤をスプレーしたり、あるいは被処理基板を水切り剤の蒸気雰囲気下に存在(ベーパー処理)させても良い。
また、本発明の水切り剤を使用するとき、被処理基板に、回転運動や超音波振動やブラシなど物理的な力を与えても良い。これらの物理的な操作は単独で行っても組み合わせて行っても良い。
The method for draining by contacting the draining agent used in the present invention with the substrate to be treated is not particularly limited, and the substrate to be treated is immersed in the draining agent, or the draining agent is sprayed on the substrate to be treated. Alternatively, the substrate to be processed may be present (vapor treatment) in a steam atmosphere of a draining agent.
Moreover, when using the draining agent of this invention, you may give physical force, such as a rotational motion, ultrasonic vibration, and a brush, to a to-be-processed substrate. These physical operations may be performed alone or in combination.
前記の水切り剤による接触処理は、1秒〜600秒間行うのが好ましく、10秒〜300秒が特に好ましい。また、水切り剤に浸漬する場合の接触処理の温度としては、浸漬する場合は、水切り剤は5℃〜その液の沸点未満の温度が好ましく、15℃〜沸点未満が特に好ましい。ベーパー処理(蒸気雰囲気下での処理)の場合、沸点付近以上の温度が好ましく、30〜200℃が特に好ましい。また、その直前に水切り剤に浸漬してからベーパー処理しても良い。 The contact treatment with the draining agent is preferably performed for 1 second to 600 seconds, particularly preferably 10 seconds to 300 seconds. Moreover, as the temperature of the contact treatment in the case of immersing in the draining agent, in the case of immersing, the temperature of the draining agent is preferably from 5 ° C. to less than the boiling point of the liquid, particularly preferably from 15 ° C. to less than the boiling point. In the case of vapor treatment (treatment in a steam atmosphere), a temperature near the boiling point is preferable, and 30 to 200 ° C. is particularly preferable. Moreover, you may immerse in the draining agent immediately before that, and may perform a vapor process.
本発明の水切り方法において水切り剤は、スプレーしたりベーパー処理する場合は、被処理基板1cm2あたり、0.01〜50ml/分の使用量が好ましく、0.1〜10ml/分の使用が特に好ましい。また、被処理基板を浸漬する場合は、同一の液に複数枚の被処理基板を浸漬するので、同様に、被処理基板1cm2あたり、0.05〜100mlの使用量が好ましく、0.5〜50mlの使用が特に好ましい。 In the draining method of the present invention, the draining agent is preferably used in an amount of 0.01 to 50 ml / min, particularly 0.1 to 10 ml / min per 1 cm 2 of the substrate to be treated when sprayed or vapor treated. preferable. When the substrate to be processed is immersed, a plurality of substrates to be processed are immersed in the same liquid. Similarly, the amount used is preferably 0.05 to 100 ml per 1 cm 2 of the substrate to be processed. The use of ˜50 ml is particularly preferred.
本発明の水切り方法に使用する被処理基板は、基板表面に柱状パターン構造及び/又はホール状パターン構造を有している。この柱状パターン構造及び/又はホール状パターン構造は、四角形でも円形でもよい。それぞれ中央部に空洞を有する、四角柱でも円柱でもよく、あるいは、それぞれ中央部に柱を有する、四角形状ホールでも円形状ホールでもよい。本発明の水切り方法は、円柱状パターン構造及び/又はホール状パターン構造を基板上に有する被処理基板に対して有効である。また、本発明は、高さ(又は深さ)/短辺(又は直径)の比が、高いアスペクト比を有する柱状構造及び/又はホール状構造に対して有効であり、20以上のアスペクト比に対して好ましく、50以上のアスペクト比に対してより好ましく、70以上のアスペクト比に対して特に好ましい。
更に本発明においては、柱状パターンの短辺(または直径)及び/又はホール状パターンの短辺(又は内径)の大きさとしては、5〜1000nmにおいてその効果を特に発揮し、さらには、10〜500nmにおいてより顕著に効果を発揮する。
本発明が適用できる被処理基板の例として、200mm又は300mm半導体用ウェハ製造工程、あるいは、マイクロマシン製造工程が例示できる。
被処理基板としては、半導体用のシリコンウエハやSOI(silicon-on-insulator)ウエハ、半導体レーザなどに使用される化合物半導体用のサファイア基板なども含まれる。
この中でもシリコン基板が最も好ましい。さらにこのパターンの表面は、表面積を稼ぐために、半球状のSiを構成してもよい。また、パターンを構成する材質は、タンタルやジルコニウム、チタン、ルテニウムといった各種金属の他、金属酸化物、金属窒化物等でもよい。
本発明においては、パターン表面は金属及び/又は金属酸化物であることが好ましい。
The to-be-processed substrate used for the draining method of the present invention has a columnar pattern structure and / or a hole-shaped pattern structure on the substrate surface. This columnar pattern structure and / or hole-shaped pattern structure may be square or circular. A square column or a cylinder each having a cavity in the center may be used, or a square hole or a circular hole each having a column in the center may be used. The draining method of the present invention is effective for a substrate to be processed having a cylindrical pattern structure and / or a hole pattern structure on a substrate. In addition, the present invention is effective for a columnar structure and / or a hole-shaped structure having a high aspect ratio (height (or depth) / short side (or diameter)), and an aspect ratio of 20 or more. Preferred for an aspect ratio of 50 or more, and particularly preferred for an aspect ratio of 70 or more.
Furthermore, in the present invention, as the size of the short side (or diameter) of the columnar pattern and / or the short side (or inner diameter) of the hole-shaped pattern, the effect is particularly exerted at 5 to 1000 nm. The effect is more remarkable at 500 nm.
As an example of the substrate to which the present invention can be applied, a 200 mm or 300 mm semiconductor wafer manufacturing process or a micromachine manufacturing process can be exemplified.
Examples of the substrate to be processed include a semiconductor silicon wafer, an SOI (silicon-on-insulator) wafer, a sapphire substrate for a compound semiconductor used for a semiconductor laser, and the like.
Among these, a silicon substrate is most preferable. Furthermore, the surface of this pattern may constitute hemispherical Si in order to increase the surface area. The material constituting the pattern may be a metal oxide, a metal nitride, or the like, in addition to various metals such as tantalum, zirconium, titanium, and ruthenium.
In the present invention, the pattern surface is preferably a metal and / or a metal oxide.
本発明における被処理基板に形成されているパターンは、レジストなど有機成分のほか、SiやSiO2など金属、金属酸化物又は金属窒化物から形成されているものが好ましく、本発明においては特に金属又は金属酸化物又は金属窒化物により形成されているパターンの被処理基板に対して、優れた効果を発揮する。 The pattern formed on the substrate to be processed in the present invention is preferably formed from a metal such as Si or SiO 2 , a metal oxide or a metal nitride in addition to an organic component such as a resist. Alternatively, an excellent effect is exerted on a substrate to be processed having a pattern formed of a metal oxide or a metal nitride.
本発明に使用する被処理基板のパターン形成に用いられるエッチング液としては、バッファードフッ酸(BHF)が広く用いられており、具体的にはフッ化水素酸とフッ化アンモニウムとの混合液であり、場合により界面活性剤を含有することが好ましい。 Buffered hydrofluoric acid (BHF) is widely used as an etchant used to form a pattern for a substrate to be used in the present invention. Specifically, a mixed liquid of hydrofluoric acid and ammonium fluoride is used. In some cases, it is preferable to contain a surfactant.
通常、このエッチング処理後、リンス処理(水洗処理)が行われ、その後、本発明の水切り剤処理が行われる。本発明においては、エッチング処理と水切り剤処理との間のリンス処理において、界面活性剤あるいは水溶性溶媒を存在させることが好ましい。 Usually, after this etching process, a rinse process (water washing process) is performed, and then the draining agent process of the present invention is performed. In the present invention, it is preferable that a surfactant or a water-soluble solvent is present in the rinsing treatment between the etching treatment and the draining agent treatment.
リンス液に使用する界面活性剤としては、各種アニオン界面活性剤、カチオン界面活性剤、ノニオン界面活性剤、ベタイン界面活性剤で良いが、汚れ残渣の観点から特にノニオン界面活性剤が好ましく、中でも炭素数が5〜15でヒドロキシル基を有するノニオン界面活性剤が好ましい。具体的な化合物としては、例えば3,5−ジメチル−1−ヘキシン−3−オールが挙げられるが、これに限定されるものではない。水溶性溶媒としては、アルコール類やエーテル類、アルデヒド類、グリコール類、アミン類など各種溶媒が存在しても良く、中でもアルコール(例えば、メチルアルコール、エチルアルコール、プロピルアルコール、イソプロパノール、ブチルアルコール、1,1,1,3,3,3−ヘキサフルオロ−2−プロパノール、1,1,1,2,2,3,3,4,4−ノナフルオロヘキサノール、1,1,1,3,3,4,4,4−オクタフルオロブタン−2−オール、2−トリフルオロメチル−1,1,1,3,3,3−ヘキサフルオロプロパン−2−オール、2−トリフルオロメチル−1,1,1−トリフルオロプロパン−2−オール、2,2,2−トリフルオロエタノール、2,2,3,3−テトラフルオロプロパノール、2,2,3,3,3−ペンタフルオロプロパノール等)が好ましく、中でもイソプロパノールが最も好ましい。 As the surfactant used in the rinsing liquid, various anionic surfactants, cationic surfactants, nonionic surfactants and betaine surfactants may be used, but nonionic surfactants are particularly preferable from the viewpoint of soil residue, and carbon Nonionic surfactants having a number of 5 to 15 and having a hydroxyl group are preferred. Specific examples of the compound include 3,5-dimethyl-1-hexyn-3-ol, but are not limited thereto. As the water-soluble solvent, various solvents such as alcohols, ethers, aldehydes, glycols, amines may be present, and alcohols (for example, methyl alcohol, ethyl alcohol, propyl alcohol, isopropanol, butyl alcohol, 1 1,1,3,3,3-hexafluoro-2-propanol, 1,1,1,2,2,3,3,4,4-nonafluorohexanol, 1,1,1,3,3 4,4,4-octafluorobutan-2-ol, 2-trifluoromethyl-1,1,1,3,3,3-hexafluoropropan-2-ol, 2-trifluoromethyl-1,1, 1-trifluoropropan-2-ol, 2,2,2-trifluoroethanol, 2,2,3,3-tetrafluoropropanol, 2,2,3,3 - pentafluoro propanol) are preferred, among them isopropanol is most preferable.
(実施例1)
シリコンウエハ(6×6cmカット品)をバッファードフッ酸溶液(ステラケミファ株式会社製、LAL1000:200ml)で処理した後、水(1,000ml)で洗浄し、その後、下記水切り剤(200ml)中に5分間浸漬した後、このシリコンウエハを引き出し、乾燥を行い、乾燥後ウエハのパターンの状態及び汚れについて、走査電子顕微鏡(日立ハイテク製S4800)にて確認した。なお、形成したパターンは、表1に記載のアスペクト比を有するジルコニウム含有円柱状パターンであった。得られた結果を表1に示す。
Example 1
A silicon wafer (6 × 6 cm cut product) was treated with a buffered hydrofluoric acid solution (manufactured by Stella Chemifa Corporation, LAL1000: 200 ml), washed with water (1,000 ml), and then in the following drainer (200 ml) After being immersed in the substrate for 5 minutes, this silicon wafer was pulled out and dried, and after the drying, the pattern state and contamination of the wafer were confirmed with a scanning electron microscope (S4800, manufactured by Hitachi High-Tech). The formed pattern was a zirconium-containing columnar pattern having the aspect ratio shown in Table 1. The obtained results are shown in Table 1.
・水切り剤−1:
1,1,1,3,3,3−ヘキサフルオロ−2−プロパノール(重量比100%)
・水切り剤−2:
1,1,1,3,3,3−ヘキサフルオロ−2−プロパノール(重量比80%)
イソプロパノール(重量比20%)
・水切り剤−3:
1,1,1,3,3,3−ヘキサフルオロ−2−プロパノール(重量比50%)
イソプロパノール(重量比50%)
・水切り剤−5:
イソプロパノール(重量比100%)
・水切り剤−6:
1,1,1,2,2,3,3,4,4−ノナフルオロヘキサン(重量比100%)
・水切り剤−7:
1,1,1,3,3,4,4,4−オクタフルオロブタン−2−オール(重量比100%)
・水切り剤−8:
2−トリフルオロメチル−1,1,1,3,3,3−ヘキサフルオロプロパン−2−オール(重量比100%)
・水切り剤−9:
2−トリフルオロメチル−1,1,1−トリフルオロプロパン−2−オール(重量比100%)
・水切り剤−10:
1,1−ジクロロ−2,2,3,3,3−ペンタフルオロプロパン(重量比100%)
・水切り剤−11:
1,3−ジクロロ−1,2,2,3,3−ペンタフルオロプロパン(重量比100%)
・水切り剤−12:
2,2,2−トリフルオロエタノール(重量比100%)
・水切り剤−13:
2,2,3,3−テトラフルオロプロパノール(重量比100%)
・水切り剤−14:
2,2,3,3,3−ペンタフルオロプロパノール(重量比100%)
・水切り剤−15:
1,1,2,2−テトラフルオロエチル−2,2,2−トリフルオロエチルエーテル(重量比100%)
-Draining agent-1:
1,1,1,3,3,3-hexafluoro-2-propanol (100% by weight)
-Draining agent-2:
1,1,1,3,3,3-hexafluoro-2-propanol (80% by weight)
Isopropanol (weight ratio 20%)
-Draining agent-3:
1,1,1,3,3,3-hexafluoro-2-propanol (weight ratio 50%)
Isopropanol (weight ratio 50% )
-Draining agent-5:
Isopropanol (100% by weight)
-Draining agent-6:
1,1,1,2,2,3,3,4,4-nonafluorohexane (100% by weight)
-Draining agent-7:
1,1,1,3,3,4,4,4-octafluorobutan-2-ol (100% by weight)
-Draining agent-8:
2-trifluoromethyl-1,1,1,3,3,3-hexafluoropropan-2-ol (100% by weight)
-Draining agent-9:
2-trifluoromethyl-1,1,1-trifluoropropan-2-ol (100% by weight)
-Draining agent-10:
1,1-dichloro-2,2,3,3,3-pentafluoropropane (100% by weight)
・ Draining agent-11
1,3-dichloro-1,2,2,3,3-pentafluoropropane (100% by weight)
-Draining agent-12:
2,2,2-trifluoroethanol (100% by weight)
-Draining agent-13:
2,2,3,3-tetrafluoropropanol (100% by weight)
-Draining agent-14:
2,2,3,3,3-pentafluoropropanol (100% by weight)
-Draining agent-15:
1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether (100% by weight)
パターン形状
A:アスペクト比50=(高さ)2,500nm/(直径)50nm
B:アスペクト比100=(高さ)5,000nm/(直径)50nm
C:アスペクト比20=(高さ)1,000nm/(直径)50nm
D:アスペクト比50=(高さ)1,000nm/(直径)20nm
E:アスペクト比50=(高さ)5,000nm/(直径)100nm
F:アスペクト比50=(高さ)2,5000nm/(直径)500nm
Pattern shape A: Aspect ratio 50 = (height) 2,500 nm / (diameter) 50 nm
B: aspect ratio 100 = (height) 5,000 nm / (diameter) 50 nm
C: Aspect ratio 20 = (height) 1,000 nm / (diameter) 50 nm
D: Aspect ratio 50 = (height) 1,000 nm / (diameter) 20 nm
E: Aspect ratio 50 = (height) 5,000 nm / (diameter) 100 nm
F: Aspect ratio 50 = (height) 2,5000 nm / (diameter) 500 nm
パターン倒れの発生の評価基準
○:走査電子顕微鏡の観察の結果、パターンの間隔の乱れが殆ど無い。
△:走査電子顕微鏡の観察の結果、パターンの間隔の乱れがおよそ1割存在。
×:走査電子顕微鏡の観察の結果、パターンの間隔の乱れが半分以上存在。
Evaluation criteria for occurrence of pattern collapse ○: As a result of observation with a scanning electron microscope, there is almost no disturbance in pattern spacing.
Δ: As a result of observation with a scanning electron microscope, there is approximately 10% of irregular pattern spacing.
X: As a result of observation with a scanning electron microscope, there is more than half of the pattern interval disturbance.
汚れの評価基準
○:走査電子顕微鏡の観察の結果、異物の付着などが殆ど無い。
△:走査電子顕微鏡の観察の結果、異物の付着が僅かに確認される。
×:走査電子顕微鏡の観察の結果、異物の付着が容易に確認される。
Evaluation criteria for dirt ○: As a result of observation with a scanning electron microscope, there is almost no adhesion of foreign matter.
(Triangle | delta): As a result of observation with a scanning electron microscope, adhesion of a foreign material is confirmed slightly.
X: As a result of observation with a scanning electron microscope, adhesion of foreign matter is easily confirmed.
(実施例2)
パターン形状が実施例1記載のDであるシリコンウエハ(直径300mm)を、バッファードフッ酸溶液(ステラケミファ株式会社製、LAL500)で処理した後、水で洗浄し、その後、該水切り剤(実施例1記載の水切り剤−1)のベーパー処理(蒸気雰囲気下での処理)を5分行い、乾燥を行った(装置FC−3100:大日本スクリーン製造(株)製)行い、乾燥後ウエハのパターンの状態及び汚れについて、走査電子顕微鏡(日立ハイテク製S4800)にて確認した。結果は、実施例1と同様、パターン倒れ及び汚れとも無く、良好な結果であった。
(実施例3)
シリコンウエハ(6×6cmカット品)をバッファードフッ酸溶液(ステラケミファ株式会社製、LAL1000:200ml)で処理した後、水−イソプロパノール混合溶液(水:イソプロパノールの重量比=4:1)で洗浄し、その後、実施例1と同じ水切り剤(200ml)中に5分間浸漬した後、このシリコンウエハを引き出し、乾燥を行い、乾燥後ウエハのパターンの状態及び汚れについて、走査電子顕微鏡(日立ハイテク製S4800)にて確認した。なお、形成したパターンは、表2に記載のアスペクト比を有する円形状ホールであった。得られた結果を表2に示す。
(Example 2)
A silicon wafer (diameter 300 mm) whose pattern shape is D described in Example 1 was treated with a buffered hydrofluoric acid solution (LAL500, manufactured by Stella Chemifa Corporation), then washed with water, and then the draining agent (implemented) Vapor treatment (treatment under a steam atmosphere) of the draining agent-1) described in Example 1 was performed for 5 minutes and dried (apparatus FC-3100: manufactured by Dainippon Screen Mfg. Co., Ltd.). The pattern state and contamination were confirmed with a scanning electron microscope (Hitachi High-Tech S4800). As in Example 1, the result was good with no pattern collapse and no stain.
(Example 3)
A silicon wafer (6 × 6 cm cut product) was treated with a buffered hydrofluoric acid solution (LAL1000: 200 ml, manufactured by Stella Chemifa Corporation) and then washed with a water-isopropanol mixed solution (water: isopropanol weight ratio = 4: 1). Then, after immersing in the same draining agent (200 ml) as in Example 1 for 5 minutes, this silicon wafer was pulled out and dried. After drying, the pattern state and dirt on the wafer were scanned with a scanning electron microscope (manufactured by Hitachi High-Tech). (S4800). The formed pattern was a circular hole having the aspect ratio shown in Table 2. The obtained results are shown in Table 2.
パターン形状
A:アスペクト比50=(深さ)2,500nm/(内径)50nm
B:アスペクト比100=(深さ)5,000nm/(内径)50nm
C:アスペクト比20=(深さ)1,000nm/(内径)50nm
D:アスペクト比50=(深さ)1,000nm/(内径)20nm
E:アスペクト比50=(深さ)5,000nm/(内径)100nm
F:アスペクト比50=(深さ)2,5000nm/(内径)500nm
Pattern shape A: Aspect ratio 50 = (depth) 2,500 nm / (inner diameter) 50 nm
B: Aspect ratio 100 = (depth) 5,000 nm / (inner diameter) 50 nm
C: Aspect ratio 20 = (depth) 1,000 nm / (inner diameter) 50 nm
D: Aspect ratio 50 = (depth) 1,000 nm / (inner diameter) 20 nm
E: Aspect ratio 50 = (depth) 5,000 nm / (inner diameter) 100 nm
F: Aspect ratio 50 = (depth) 2,5000 nm / (inner diameter) 500 nm
ウォーターマークの発生の評価基準
○:走査電子顕微鏡の観察の結果、ウォーターマークの発生が殆ど無い。
△:走査電子顕微鏡の観察の結果、ウォーターマークの発生が僅かに確認される。
×:走査電子顕微鏡の観察の結果、ウォーターマークの発生が容易に確認される。
Evaluation criteria for occurrence of watermarks ○: As a result of observation with a scanning electron microscope, there is almost no occurrence of watermarks.
(Triangle | delta): Generation | occurrence | production of a watermark is confirmed slightly as a result of observation with a scanning electron microscope.
X: As a result of observation with a scanning electron microscope, generation of a watermark is easily confirmed.
汚れの評価基準
○:走査電子顕微鏡の観察の結果、異物の付着などが殆ど無い。
△:走査電子顕微鏡の観察の結果、異物の付着が僅かに確認される。
×:走査電子顕微鏡の観察の結果、異物の付着が容易に確認される。
Evaluation criteria for dirt ○: As a result of observation with a scanning electron microscope, there is almost no adhesion of foreign matter.
(Triangle | delta): As a result of observation with a scanning electron microscope, adhesion of a foreign material is confirmed slightly.
X: As a result of observation with a scanning electron microscope, adhesion of foreign matter is easily confirmed.
(実施例4)
パターン形状が実施例2記載のCであるシリコンウエハ(6×6cmカット品)を回転(100rpm)させながらバッファードフッ酸溶液(ステラケミファ株式会社製、LAL1000:200ml)で処理した後、3,5−ジメチル−1−ヘキシン−3−オール含有水溶液(濃度1重量%)で洗浄し、その後、該水切り剤(実施例1記載の水切り剤−1)の加熱により発生させた蒸気をそのウエハに3分間吹き付けた。そして、このシリコンウエハを引き出し、乾燥後ウエハのパターンの状態及び汚れについて、走査電子顕微鏡(日立ハイテク製S4800)にて確認した。結果は、実施例2と同様、ウォーターマークやホール付近の異物なども無く、良好な結果であった。
Example 4
After processing the silicon wafer (6 × 6 cm cut product) whose pattern shape is C described in Example 2 with a buffered hydrofluoric acid solution (LAL1000: 200 ml, manufactured by Stella Chemifa Corporation) while rotating (100 rpm), 3, The wafer was washed with a 5-dimethyl-1-hexyn-3-ol-containing aqueous solution (concentration 1% by weight), and then the steam generated by heating the drainer (drainer-1 described in Example 1) was applied to the wafer. Sprayed for 3 minutes. Then, this silicon wafer was pulled out, and after drying, the pattern state and dirt on the wafer were confirmed with a scanning electron microscope (S4800, manufactured by Hitachi High-Tech). The result was good as in Example 2 with no watermark or foreign matter near the hole.
Claims (8)
(ロ)前記基板を、1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールよりなるか、又は、1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールの50〜100重量%と、1,1,1,3,3,3−ヘキサフルオロ−2−プロパノールと室温において相溶性を有するフッ素を有しないアルコールの50〜0重量%との混合物である水切り剤と接触させる工程、を実施する水切り方法。 (A ) A substrate having a columnar pattern with a height / diameter aspect ratio of 50 or more and / or a circular hole pattern with a depth / diameter aspect ratio of 50 or more on the substrate is treated with water or an aqueous rinse solution. The step of contacting with, and following this step,
(B) The substrate is made of 1,1,1,3,3,3-hexafluoro-2-propanol or made of 1,1,1,3,3,3-hexafluoro-2-propanol A draining agent which is a mixture of 50 to 100% by weight and 1,0,1 to 1,3,3,3-hexafluoro-2-propanol and 50 to 0% by weight of a fluorine-free alcohol compatible with room temperature A draining method for carrying out the step of contacting with the water.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007222100A JP5022828B2 (en) | 2006-09-14 | 2007-08-29 | Draining agent for substrate, draining method and drying method using the same |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006248955 | 2006-09-14 | ||
JP2006248955 | 2006-09-14 | ||
JP2007222100A JP5022828B2 (en) | 2006-09-14 | 2007-08-29 | Draining agent for substrate, draining method and drying method using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008098616A JP2008098616A (en) | 2008-04-24 |
JP5022828B2 true JP5022828B2 (en) | 2012-09-12 |
Family
ID=39381090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007222100A Expired - Fee Related JP5022828B2 (en) | 2006-09-14 | 2007-08-29 | Draining agent for substrate, draining method and drying method using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5022828B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100022070A1 (en) * | 2008-07-22 | 2010-01-28 | Semiconductor Energy Laboratory Co., Ltd. | Method for manufacturing soi substrate |
CN104101180A (en) * | 2013-04-01 | 2014-10-15 | 莆田市嘉辉光电有限公司 | Liquid crystal dehumidifier and liquid crystal dehumidification method |
JP6117711B2 (en) | 2014-02-06 | 2017-04-19 | 信越化学工業株式会社 | Semiconductor substrate cleaning and drying method |
JP2018186231A (en) | 2017-04-27 | 2018-11-22 | 信越化学工業株式会社 | Method for cleaning and drying semiconductor substrate |
JP2022164256A (en) * | 2021-04-16 | 2022-10-27 | 株式会社Screenホールディングス | Substrate processing method, substrate processing device, and drying processing liquid |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0327329A (en) * | 1989-06-23 | 1991-02-05 | Asahi Glass Co Ltd | Fluorinated hydrocarbon-based solvent composition |
JP3920696B2 (en) * | 2001-04-24 | 2007-05-30 | 株式会社神戸製鋼所 | Method for drying fine structure and fine structure obtained by the method |
JP3812891B2 (en) * | 2002-01-30 | 2006-08-23 | 株式会社荏原製作所 | Wiring formation method |
JP2004241754A (en) * | 2002-07-16 | 2004-08-26 | Chem Art Technol:Kk | Substrate treatment method and substrate treatment apparatus |
-
2007
- 2007-08-29 JP JP2007222100A patent/JP5022828B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008098616A (en) | 2008-04-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI484030B (en) | Substrate water-removing agent, and water-removing method and drying method employing same | |
JP3441715B2 (en) | Aqueous rinse composition and method using the same | |
KR100561178B1 (en) | Compositions for cleaning organic and plasma etched residues for semiconductor devices | |
US6310018B1 (en) | Fluorinated solvent compositions containing hydrogen fluoride | |
JP5022828B2 (en) | Draining agent for substrate, draining method and drying method using the same | |
KR100335450B1 (en) | A semiconductor device washing apparatus and a method of washing a semiconductor device | |
CN102484056B (en) | For suppressing the treatment fluid of the pattern collapse of metal superfine structure and using its manufacture method of metal superfine structure | |
KR20020031159A (en) | Lactam compositions for cleaning organic and plasma etched residues for semiconductor devices | |
TWI540626B (en) | Etching method and etching liquid used therein, manufacturing method of semiconductor element using the same | |
JP5801594B2 (en) | Cleaning composition, cleaning method using the same, and semiconductor device manufacturing method | |
CN101217101A (en) | A method to rinse blots on surfaces of ceramics | |
US20020119245A1 (en) | Method for etching electronic components containing tantalum | |
JPH10251695A (en) | Detergent composition for use in cleaning wafer for manufacturing semiconductor device and cleaning method | |
JP4475538B2 (en) | Aqueous cleaning composition for semiconductor copper processing | |
CN102598220B (en) | For suppressing the treatment fluid of the pattern collapse of metal superfine structure and using its manufacture method of metal superfine structure | |
JP2008172016A (en) | Cleaning composition for member of semiconductor manufacturing device and cleaning method using the same | |
JP4637010B2 (en) | Release agent composition | |
JP2005223184A (en) | Washings and its utilization | |
CN102640264B (en) | Treatment solution for preventing pattern collapse in metal fine structure body, and process for production of metal fine structure body using same | |
JP5720572B2 (en) | Treatment liquid for suppressing pattern collapse of metal microstructure and method for producing metal microstructure using the same | |
JP2016519441A (en) | Processes containing water vapor for haze removal and residue removal | |
JP6405610B2 (en) | Treatment liquid for suppressing pattern collapse of fine structure having high aspect ratio and method for producing fine structure using the same | |
CN100446191C (en) | Wet-type chemical washing method | |
JP2006041065A (en) | Solid-state spray washing method | |
KR20020030742A (en) | Methods for wet processing electronic components having copper containing surfaces |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20100202 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20100623 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20100927 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110707 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110712 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110908 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20111227 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120321 |
|
A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20120329 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120612 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120618 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5022828 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150622 Year of fee payment: 3 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |