摘要:
A photoresist composition which includes hydroxycarborane either incorporated as a monomeric dissolution modifier or as pendent groups on a polymer backbone. The photoresist composition is particularly useful in a bilayer thin film imaging lithographic process in which ultraviolet radiation-imaging in a wavelength range of between about 365 nm and about 13 nm is employed.
摘要:
Increased protection of areas of a chip are provided by both a mask structure of increased robustness in regard to semiconductor manufacturing processes or which can be removed with increased selectivity and controllability in regard to underlying materials, or both. Mask structures are provided which exhibit an interface of a chemical reaction, grain or material type which can be exploited to enhance either or both types of protection. Structures of such masks include TERA material which can be converted or hydrated and selectively etched using a mixture of hydrogen fluoride and a hygroscopic acid or organic solvent, and two layer structures of similar or dissimilar materials.
摘要:
A lithographic structure comprising: an organic antireflective material disposed on a substrate, and a silicon antireflective material disposed on the organic antireflective material. The silicon antireflective material comprises a crosslinked polymer with a SiOx backbone, a chromophore, and a transparent organic group that is substantially transparent to 193 nm or 157 nm radiation. In combination, the organic antireflective material and the silicon antireflective material provide an antireflective material suitable for deep ultraviolet lithography. The invention is also directed to a process of making the lithographic structure.
摘要:
A lithographic structure comprising: an organic antireflective material disposed on a substrate; and a silicon antireflective material disposed on the organic antireflective material. The silicon antireflective material comprises a crosslinked polymer with a SiOx backbone, a chromophore, and a transparent organic group that is substantially transparent to 193 nm or 157 nm radiation. In combination, the organic antireflective material and the silicon antireflective material provide an antireflective material suitable for deep ultraviolet lithography. The invention is also directed to a process of making the lithographic structure.
摘要:
The invention relates generally to lithographic patterning of very small features. In particular, the invention relates generally to patterning of semiconductor circuit features smaller than lithographically defined using either conventional optical lithography or next generation lithography techniques. The invention relates more particularly, but not by way of limitation, to lateral trimming of photoresist images.
摘要:
A method for image reversal in semiconductor processing includes forming a first implant mask layer upon a semiconductor substrate and forming a patterned photoresist layer over the first implant mask layer. Portions of the first implant mask layer not covered by the patterned photoresist layer are removed so as to expose non-patterned portions of the substrate. The photoresist layer is then removed, and a second implant mask layer is formed over the non-patterned portions of the substrate, wherein the first implant mask layer has an etch selectivity with respect to the second implant mask layer. The remaining portions of the first implant mask layer are removed to expose a reverse image of the substrate, including initially patterned portions of the substrate.
摘要:
Techniques for semiconductor processing are provided. In one aspect, a method for patterning one or more features in a semiconductor device comprises the following step. At least one critical dimension of the one or more features is reduced during etching of the antireflective material. A lithographic structure is also provided.
摘要:
Form an opening in a dielectric layer formed on a substrate comprises depositing a hard mask composed of an etch resistant material over a dielectric layer, e.g. a silicon oxide. Use a photoresist mask to expose the hard mask. Use a fluorocarbon plasma to etch through the window to form an opening through the hard mask. Then etch through the hard mask opening to pattern the dielectric layer. The hard mask comprises an RCH/RCHX material with the structural formula R:C:H or R:C:H:X, where R is selected from Si, Ge, B, Sn, Fe, Ti and X is selected from O, N, S and F. The plasma etching process employs a) a gas mixture comprising N2; fluorocarbon (CHF3, C4F8, C4F6, CF4, CH2F2, CH3F); an oxidizer (O2, CO2), and a noble diluent (Ar, He); b) a high DC bias (500-3000 Volts bias on the wafer); 3) medium pressure (20-100 mT.; and d) moderate temperatures (−20 to 60°).
摘要翻译:在形成在基板上的电介质层中形成开口,包括在电介质层上沉积由耐蚀刻材料构成的硬掩模, 氧化硅。 使用光刻胶掩模露出硬掩模。 使用氟碳等离子体通过窗口蚀刻以形成通过硬掩模的开口。 然后蚀刻穿过硬掩模开口以对介电层进行图案化。 硬掩模包括具有结构式R:C:H或R:C:H:X的RCH / RCHX材料,其中R选自Si,Ge,B,Sn,Fe,Ti和X选自O, N,S和F.等离子体蚀刻工艺使用a)包含N 2的气体混合物; 碳氟化合物(CHF 3,C 4 F 8,C 4 F 6,CF 4,CH 2 F 2,CH 3 F); 氧化剂(O 2,CO 2)和稀有稀释剂(Ar,He); b)高直流偏置(晶片上的500-3000伏偏压); 3)中压(20-100mT;和d)中等温度(-20至60°)。
摘要:
A lithographic structure consisting essentially of: an organic antireflective material disposed on a substrate; a vapor-deposited RCHX material, wherein R is one or more elements selected from the group consisting of Si, Ge, B, Sn, Fe and Ti, and wherein X is not present or is one or more elements selected from the group consisting of O, N, S and F; and a photoresist material disposed on the RCHX material. The invention is also directed to methods of making the lithographic structure, and using the structure to pattern a substrate.
摘要:
A lithographic structure comprising: an organic antireflective material disposed on a substrate; and a silicon antireflective material disposed on the organic antireflective material. The silicon antireflective material comprises a crosslinked polymer with a SiOx backbone, a chromophore, and a transparent organic group that is substantially transparent to 193 nm or 157 nm radiation. In combination, the organic antireflective material and the silicon antireflective material provide an antireflective material suitable for deep ultraviolet lithography. The invention is also directed to a process of making the lithographic structure.