摘要:
A basic supercritical solution formulated to include at least one supercritical fluid and a base may be used to quench a photo-generated acid within a photoresist as well as develop the photoresist. The base may be the supercritical fluid in the basic supercritical solution. A super critical fluid is a state of matter above the critical temperature and pressure (Tc and Pc). A basic supercritical solution formulated to include at least one supercritical fluid has a low viscosity and surface tension and is capable of penetrating narrow features having high aspect ratios and the photoresist material due to the gas-like nature of the supercritical fluid.
摘要翻译:配制成包含至少一种超临界流体和碱的基本超临界溶液可用于淬灭光致抗蚀剂内的光生酸,以及显影光致抗蚀剂。 碱可以是基本超临界溶液中的超临界流体。 超临界流体是高于临界温度和压力(T T c C和C C)的物质状态。 配制成包含至少一种超临界流体的基本超临界溶液具有低粘度和表面张力,并且由于超临界流体的气体性质,能够穿透具有高纵横比的窄特征和光致抗蚀剂材料。
摘要:
A method of forming an opening in a disclosed ILD is described. The ILD in one embodiment includes a matrix material and a photosensitive porogen. Hard sidewalls are formed in the ILD allowing a thin barrier layer to be used in a dual damascene copper and porous low-k without pore sealing steps.
摘要:
Line edge roughness may be reduced by treating a patterned photoresist with a plasticizer. The plasticizer may be utilized in a way to surface treat the photoresist after development. Thereafter, the plasticized photoresist may be subjected to a heating step to reflow the photoresist. The reflow process may reduce the line edge roughness of the patterned, developed photoresist.
摘要:
The present invention includes polymers and photoresist compositions that comprise the polymers as a resin binder component. Photoresists of the invention include chemically-amplified positive-acting resists that can be effectively imaged at short wavelengths such as sub-200 nm, particularly 193 nm. Polymers of the invention suitably contain 1) photoacid labile groups that preferably contain an alicyclic moiety; 2) a polymerized electron-deficient monomer; 3) a polymerized cyclic olefin moiety. Particularly preferred polymers of the invention are tetrapolymers or pentapolymers, preferably with differing polymerized norbornene units.
摘要:
Embodiments of the invention provide a non-chemically amplified photoresist, which results in reduced line wide roughness (LWR). In accordance with one embodiment the photoresist includes a developer-soluble resin (DSR) and a photoactive compound (PAC). For one embodiment of the invention, the even distribution of the PAC within the DSR results in reduced acid diffusion thus reducing LWR. Prior to exposure to the light source, the PAC inhibits solubility of the DSR in the developer. Upon exposure the PAC converts to acid to promote solubility of the DSR. The even distribution of the PAC within the photoresist results in reduced LWR and a reduction in defects. For one embodiment the photoresist is applied in the EUV technology (e.g., wavelength is 13.4 nm). For such an embodiment the LWR may be reduced to less than 1.5 nm allowing for effective fabrication of devices having feature sizes of approximately 15 nm.
摘要:
Embodiments of the invention provide methods and compositions for providing photoresists with improved liquid-contact properties. For one embodiment of the invention, a photoresist is provided having one or more constituent components that are resistant to diffusion between the photoresist and an index-matching liquid (IML). For such an embodiment in which the IML is water, a photoresist component is provided that is hydrophobic thus reducing diffusion between the photoresist and the water. In various alternative embodiments of the invention, a photoresist is provided having one or more constituent components that encourage diffusion between the photoresist layer and the IML in such manner as to impart beneficial liquid-contact properties to the photoresist layer. For such an embodiment in which the IML is water, a photoresist is provided having one or more hydrophilic constituents.
摘要:
A modified EUV photoresist and a method of making the resist. The modified resist includes an EUV photoresist and a LAM incorporated into the EUV photoresist.
摘要:
A series structure of a chemically amplified negative tone photoresist that is not based on cross-linking chemistry is herein described. The photoresist may comprise: a first aromatic structure copolymerized with a cycloolefin, wherein the cycloolefin is functionalized with a di-ol. The photoresist may also include a photo acid generator (PAG). When at least a portion of the negative tone photoresist is exposed to light (EUV or UV radiation), the PAG releases an acid, which reacts with the functionalized di-ol to rearrange into a ketone or aldehyde. Then new ketone or aldehyde is less soluble in developer solution, resulting in a negative tone photoresist.
摘要:
Numerous embodiments of a method to increase the mechanical strength of a photoresist structure are described. In one embodiment of the present invention, a photoresist material is dispensed over a substrate to form a photoresist layer. The photoresist material is exposed to a first radiation treatment to define a pattern to be formed on the photoresist layer. A developer solution is applied to the photoresist material to form the pattern and rinsed with a rinse solution to remove the developer solution. The photoresist material is exposed to a second radiation treatment to induce cross-linking.