摘要:
The present invention provides a wafer treating solution in which at least one of CnH2n+1ph(SO3M)Oph(SO3M) wherein ph is a phenylene group, n is 5 to 20, and M is a hydrogen or salt; CnH2n+1phO(CH2CH2O)mSO3M wherein ph is a phenylene group, n is 5 to 20, m is 0 to 20, and M is a hydrogen or salt; and CnH2n+1O(CH2CH2O)mSO3M wherein n is 5 to 20, m is 0 to 20, and M is a hydrogen or salt, is dissolved in 0.1 to 1000 ppm into a 20 to 60 wt% of hydrogen fluoride (HF), and the remainder is water (100 wt% in total) , and a method for preparing a low concentration of wafer treating solution by adding water, H2O2, HNO3, CH3COOH, NH4F or the like, into the above solution. The present invention also provides a wafer treating solution in which at least one of surfactants represented by CnH2n+1ph(SO3M)Oph(SO3M) wherein ph is a phenylene group, n is 5 to 20, and M is a hydrogen or salt; CnH2n+1ph(CH2CH2O)mSO3M wherein ph is a phenylene group, n is 5 to 20, m is 0 to 20, and M is a hydrogen or salt; and CnH2n+1O(CH2CH2O)mSO3M wherein n is 5 to 20, m is 0 to 20, and M is a hydrogen or salt, is dissolved in 0.01 to 1000 ppm in at least one of HF, H2O2, HNO3, CH3COOH, NH4F, HCl, H3PO4 and an ammonium hydroxide represented by a formula: Ä(R1) (R2) (R3) (R4)NÜ OH wherein R1 , R2 , R3 and R4 are an alkyl group of 1 to 6 carbon atoms which may have a hydroxyl group as a substitutent, and the remainder is water (100 wt% in total).
摘要翻译:本发明提供一种晶片处理溶液,其中ph为亚苯基,n为5〜20,M为氢或盐的CnH2n + 1ph(SO3M)Oph(SO3M)中的至少一种; CnH2n + 1phO(CH2CH2O)mSO3M其中ph为亚苯基,n为5至20,m为0至20,M为氢或盐; 和C n H 2n + 10(CH 2 CH 2 O)m SO 3 M,其中n为5至20,m为0至20,M为氢或盐,溶解在20至60重量%的氟化氢(HF)中,为0.1至1000ppm, 其余为水(总计100重量%),以及通过向上述溶液中加入水,H 2 O 2,HNO 3,CH 3 COOH,NH 4 F等制备低浓度晶片处理溶液的方法。 本发明还提供一种晶片处理溶液,其中至少一种由CnH2n + 1ph(SO3M)Oph(SO3M)表示的表面活性剂,其中ph为亚苯基,n为5至20,M为氢或盐; CnH2n + 1ph(CH2CH2O)mSO3M其中ph为亚苯基,n为5至20,m为0至20,M为氢或盐; 和C n H 2n + 10(CH 2 CH 2 O)m SO 3 M,其中n为5至20,m为0至20,M为氢或盐,在HF,H 2 O 2,HNO 3,CH 3 COOH,NH 4 F中的至少一种中溶解于0.01至1000ppm ,HCl,H 3 PO 4和由下式表示的氢氧化铵:Ä(R1)(R2)(R3)(R4)NÜ+ OH其中R1,R2,R3和R4是1至6的烷基 可以具有羟基作为取代基的碳原子,其余为水(总计100重量%)。
摘要:
An etching solution which exhibits etching rates for both of a thermally oxidized film (THOX) and a boron-phosphorus-glass film (BPSG) of 100 ANGSTROM /min or less at 25 DEG C, and an etching rate ratio : etching rate for BPSG / etching rate for a thermally oxidized film (THOX) of 1.5 or less.
摘要:
An etching solution which contains hydrogen fluoride (HF) and exhibits an etching rate ratio: etching rate for a boron-glass film (BSG) or boron-phosphorus-glass film (BPSG)/etching rate for a thermally oxidized film (THOX) of 10 or more at 25 DEG C.
摘要:
An object of the present invention is to provide a method for producing a compound having an oxydifluoromethylene skeleton at a high yield by a simple process without using highly toxic starting materials, such as dibromodifluoromethane, while generating almost no difficult-to-separate impurities. A reaction between a thionocarboxylic acid ester (which may be obtained by a reaction between a halogenated thiocarbonyl compound and a specific compound as required) and a compound represented by Formula: XF n (wherein X represents chlorine, bromine, or iodine, and n represents a natural number of 1 to 5) gives a compound having an oxydifluoromethylene skeleton at a high yield. Various groups, such as an aromatic ring group, may also be introduced in high yield by reacting this compound with a boronic acid compound and the like as required.
摘要:
A method of removing particles adherent to substrates, in particular, silicon wafer substrates by cleaning with an ammonia-hydrogen peroxide solution mixture, rinsing with ultrapure water, cleaning with hydrofluoric acid, and rinsing with ultrapure water, wherein an anionic surfactant is added to the hydrofluoric acid and, if necessary, to the ammonia-hydrogen peroxide solution mixture. As the particles detached in the step of cleaning with an ammonia-hydrogen peroxide solution mixture are not absorbed again in the step of cleaning with hydrofluoric acid, the particle removal rate is remarkably improved.