摘要:
A method is provided for plasma ashing to remove photoresist remnants and etch residues that are formed during preceding plasma etching of dielectric layers. The ashing method uses a two-step plasma process involving an hydrogen-containing gas, where low or zero bias is applied to the substrate in the first cleaning step to remove significant amount of photoresist remnants and etch residues from the substrate, in addition to etching and removing detrimental fluoro-carbon residues from the chamber surfaces. An increased bias is applied to the substrate in the second cleaning step to remove the remains of the photoresist and etch residues from the substrate. The two-step process reduces the memory effect commonly observed in conventional one-step ashing processes. A method of endpoint detection can be used to monitor the ashing process.
摘要:
A plasma processing apparatus has a process chamber and a pair of electrodes provided in the process chamber to oppose each other. An RF power supply outputs an RF power to be supplied to at least one of the pair of electrodes in the process chamber. A power detector detects an actual RF power to be applied to one of the electrodes in the process chamber. A controller controls the RF power output from the RF power supply to a predetermined value in accordance with the actual RF power detected by the power detector.
摘要:
A parallel multiplier consists of a systolic array of AND gates and full adders organized in stages so that each stage generates a partial product, adds it to the preceding partial products, and furnishes the sum to the next stage. A control circuit is provided that disables the outputs of each stage of the array until the operation in the particular stage is completed. The disabling of outputs reduces power consumption.
摘要:
A control rod for a boiling-water reactor having blades arranged in the form of a cross in transverse cross section includes a plurality of poison tubes disposed therein. Boron carbide powder which is a neutron absorbing material causing an (n, .alpha.) reaction to take place is charged in the poison tubes. The control rod has plates of Hf-Zr alloy arranged in the blades in a position nearer to a forward end of the control rod at which the control rod is inserted in a reactor core than the poison tubes. The plates of Hf-Zr alloy are formed of an alloy of Hf having a large neutron absorption cross section and Zr having a small neutron absorption cross section. The concentration of Hf in the plates of Hf-Zr alloy is successively reduced in going from an end thereof adjacent the poison tubes toward and end thereof at the inserting end of the control rod. The plates of Hf-Zr alloy and the poison tubes have the same neutron absorbing capacity at the boundary therebetween at which they are in contact with each other.
摘要:
There is provided a substrate processing method capable of etching a layer containing, at least, platinum without using a halogen gas. When etching the platinum-manganese layer on a wafer W by using a tantalum (Ta) layer 38 having a certain pattern shape, a processing gas containing, at least, a carbon monoxide gas, a hydrogen gas, and a rare gas is used, and a ratio of a gas flow rate of the hydrogen gas to a total gas flow rate of the carbon monoxide gas and the hydrogen gas is in a range of from about 50% to about 75%.
摘要:
There is provided a substrate processing method capable of increasing an etching rate of a copper member without using a halogen gas. A Cu layer 40 having a smoothened surface 50 is obtained, and then, a processing gas produced by adding a methane gas to a hydrogen gas is introduced into an inner space of a processing chamber 15. Plasma is generated from this processing gas. In the inner space of the processing chamber 15, there exist oxygen radicals 52 generated when an oxide layer 42 is etched, and carbon radicals 53 generated from methane. The oxygen radicals 52 and the carbon radicals 53 are compounded to generate an organic acid, and the organic acid makes a reaction with copper atoms of the Cu layer 40. As a result, a complex of the organic acid having the copper atoms is generated, and the generated organic acid complex is vaporized.
摘要:
The present invention is an apparatus for manufacturing a semiconductor device comprising: a process vessel including a stage on which a substrate is placed, the substrate having a low dielectric constant film with a resist pattern being formed in an upper layer of the low dielectric constant film; an etching-gas supply unit that supplies an etching gas into the process vessel so as to etch the low dielectric constant film; an ashing-gas unit means that supplies an ashing gas into the process vessel so as to ash the resist pattern formed in the upper layer of the low dielectric constant film after the low dielectric constant film has been subjected to an etching process; a plasma generating means that generates a plasma by supplying an energy to the etching gas and the ashing gas in the process vessel; a unit that supplies a dipivaloylmethane gas into the process vessel, after the low dielectric constant film has been subjected to an ashing process, in order to recover a damage layer of the low dielectric constant film which has been damaged by the plasma; and a heating unit that enables the dipivaloylmethane gas to come into contact with a surface of the substrate under a heated condition.
摘要:
A plasma processing method in which performing a plasma etching on metal layers formed on a substrate is conducted to form a pattern having the metal layers in a stacked structure, and then a deposit containing a metal that forms the metal layers and being deposited on a sidewall portion of the pattern is removed, the method includes: forming a protective layer by forming an oxide or chloride of the metal on sidewall portions of the metal layers; removing the deposit by applying a plasma of a gas containing fluorine atoms; and reducing the oxide or chloride of the metal by applying a plasma containing hydrogen after forming the protective layer and removing the deposit.
摘要:
A substrate processing apparatus that can reliably improve the efficiency of heat transfer between a focus ring and a mounting stage. A housing chamber with the interior thereof evacuated houses a substrate. The substrate is mounted on a mounting stage that is disposed in the housing chamber. An annular focus ring is mounted on the mounting stage such as to surround a peripheral portion of the mounted substrate. A heat transfer film is formed on a surface of the focus ring which contacts the mounting stage by printing processing.
摘要:
A method of processing a substrate having a processing target layer and an organic film serving as a mask layer includes a mineralizing process of mineralizing the organic film. The mineralizing process includes an adsorption process for allowing a silicon-containing gas to be adsorbed onto a surface of the organic film; and an oxidation process for oxidizing the adsorbed silicon-containing gas to be converted into a silicon oxide film. A monovalent aminosilane is employed as the silicon-containing gas.