Abstract:
Resists for use in ultraviolet, electron beam and x-ray exposure devices comprising a polymeric or molecular composition the solubility of which is dependent upon the presence of acid removable protecting groups and a sulfonic acid precursor which generates a strong acid upon exposure to such radiation. The preferred sulfonic acid precursors are triflate esters or benzenesulfonyloxy esters of N-hydroxyimides.
Abstract:
PROBLEM TO BE SOLVED: To make a composition hardly receive a disadvantageous reaction with environmental contaminants, enhance the tolerance for variable or long delay between exposure and printing after the exposure or printing after the exposure and development, eliminate any deterioration in a profile, stabilize the solubility in solvents and impart storage life thereof in a solution for a long period at ambient temperature. SOLUTION: This microlithographic composition comprises a composition, containing a film-forming polymer substituted at the o-position with an acid unstable compound containing a ketal component in at least a part of a chemically bound recurring hydroxyl group and an acid-generating compound, capable of forming an acid by exposure to actinic radiations and chemically bound to the polymer and used as the microlithographic composition. The acid generated by the exposure initiates the cleavage of at least a part of the compound containing the ketal component and the exposed composition becomes selectively more soluble in an aqueous base as compared with an unexposed composition.
Abstract:
The present invention discloses an antireflective coating composition for applying between a substrate surface and a positive photoresist composition. The antireflective coating composition is developable in an aqueous alkaline developer. The antireflective coating composition comprises a polymer, which comprises at least one monomer unit containing one or more moieties selected from the group consisting of a lactone, maleimide, and an N-alkyl maleimide; and at least one monomer unit containing one or more absorbing moieties. The polymer does not comprise an acid labile group. The present invention also discloses a method of forming and transferring a relief image by using the inventive antireflective coating composition in photolithography.
Abstract:
Die vorliegende Erfindung betrifft eine Zusammensetzung einer entwickelbaren untenliegenden Antireflexbeschichtung (BARC-Zusammensetzung) und ein Verfahren zum Bilden von Strukturen unter Verwendung der BARC-Zusammensetzung. Die BARC-Zusammensetzung enthält ein erstes Polymer mit einer ersten Carbonsäureeinheit, einer Hydroxy-enthaltenden alicyclischen Einheit und einer ersten chromophoren Einheit; ein zweites Polymer mit einer zweiten Carbonsäureeinheit, einer Hydroxy-enthaltenden acyclischen Einheit und einer zweiten chromophoren Einheit; ein Vernetzungsmittel; und einen strahlungsempfindlichen Säuregenerator. Die erste und die zweite chromophore Einheit absorbieren jeweils Licht mit einer Wellenlänge von 100 nm bis 400 nm. Bei dem Verfahren zum Bilden von Strukturen wird eine Photoresistschicht über einer BARC-Schicht aus der BARC-Zusammensetzung gebildet. Nach dem Exponieren werden nichtexponierte Bereiche der Photoresistschicht und der BARC-Schicht selektiv durch einen Entwickler entfernt, um eine strukturierte Struktur in der Photoresistschicht zu bilden. Die BARC-Zusammensetzung und das Verfahren zum Bilden von Strukturen sind besonders für Implantationsebenen verwendbar.
Abstract:
The present invention relates to a developable bottom antireflective coating (BARC) composition and a pattern forming method using the BARC composition. The BARC composition includes a first polymer having a first carboxylic acid moiety, a hydroxy- containing alicyclic moiety, and a first chromophore moiety; a second polymer having a second carboxylic acid moiety, a hydroxy-containing acyclic moiety, and a second chromophore moiety; a crosslinking agent; and a radiation sensitive acid generator. The first and second chromophore moieties each absorb light at a wavelength from 100 nm to 400 nm. In the patterning forming method, a photoresist layer is formed over a BARC layer of the BARC composition. After exposure, unexposed regions of the photoresist layer and the BARC layer are selectively removed by a developer to form a patterned structure in the photoresist layer. The BARC composition and the pattern forming method are especially useful for implanting levels.
Abstract:
Resists for use in photon, electron beam and x-ray exposure devices comprise a polymeric or molecular composition the solubility of which is dependent upon the presence of acid removable protecting groups and a sulfonic acid precursor which generates a strong acid upon exposure to such radiation. The preferred sulfonic acid precursors are triflate salts of imides.
Abstract:
The present invention relates to a developable bottom antireflective coating (BARC) composition and a pattern forming method using the BARC composition. The BARC composition includes a first polymer having a first carboxylic acid moiety, a hydroxy-containing alicyclic moiety, and a first chromophore moiety; a second polymer having a second carboxylic acid moiety, a hydroxy-containing acyclic moiety, and a second chromophore moiety; a crosslinking agent; and a radiation sensitive acid generator. The first and second chromophore moieties each absorb light at a wavelength from 100 nm to 400 nm. In the patterning forming method, a photoresist layer is formed over a BARC layer of the BARC composition. After exposure, unexposed regions of the photoresist layer and the BARC layer are selectively removed by a developer to form a patterned structure in the photoresist layer. The BARC composition and the pattern forming method are especially useful for implanting levels.
Abstract:
The structure comprises a pattern of a cured polymeric material deposited onto a substrate, said polymeric material having at least one fluorine-containing functional group and of an overlying silylated photoresist material. For forming a structure on a substrate utilizing photolithographic techniques a layer of polymeric material containing a fluorine-containing compound is applied over the substrate and cured. A layer of photoresist material is applied over the polymeric material, imagewise exposed and developed to reveal the image on the underlying polymeric material. Thereafter, the photoresist is silylated, and the then present structure is reactive ion etched to transfer the pattern down to the underlying substrate. The fluorine component provides that the structure or the pattern and the underlying substrate respectively are free of residue and cracking.
Abstract:
The present invention relates to a developable bottom antireflective coating (BARC) composition and a pattern forming method using the BARC composition. The BARC composition includes a first polymer having a first carboxylic acid moiety, a hydroxy-containing alicyclic moiety, and a first chromophore moiety; a second polymer having a second carboxylic acid moiety, a hydroxy-containing acyclic moiety, and a second chromophore moiety; a crosslinking agent; and a radiation sensitive acid generator. The first and second chromophore moieties each absorb light at a wavelength from 100 nm to 400 nm. In the patterning forming method, a photoresist layer is formed over a BARC layer of the BARC composition. After exposure, unexposed regions of the photoresist layer and the BARC layer are selectively removed by a developer to form a patterned structure in the photoresist layer. The BARC composition and the pattern forming method are especially useful for implanting levels.