摘要:
The apparatus comprises a tight treatment enclosure (10), means (20,22) for the axial production of a carrier gas plasma, a solid plate (30) serving as an obstacle to the plasma and located perpendicular to the enclosure axis and downstream of the plasma production means, plasma diffusion means (40) located downstream of the obstacle plate, several non-ionized vector gas supply tubes (50) issuing axially into the enclosure beneath the diffusion means and all located in the same plane around the enclosure axis, a substrate carrier (56) positioned downstream of the vector gas supply tubes and perpendicular to the axis and annular pumping means (66,16) for the gaseous medium contained in the enclosure and positioned downstream of the substrate carrier.
摘要:
The invention relates to a process for etching a substrate with the aid of a gas plasma produced either by ultra-high frequency waves, or by ultra-high frequency and radio-frequency waves.In this process, the gaseous medium used for the formation of the plasma comprises at least one non-carbon-containing fluorinating gas such as SF.sub.6, at least one rare gas such as Ar and at least one non-carbon-containing oxidizing gas such as oxygen, as well as optionally another gas such as nitrogen.The invention is more particularly usable in the microelectronics field.
摘要:
The method consists in establishing the ion bombardment parameters, in varying a regulation parameter in order to initiate deposition, in measuring at each instant the total pressure drop within the vacuum chamber with respect to the initial pressure and in controlling the total pressure drop by controllably varying the regulation parameter.
摘要:
A method and apparatus for determining the impedance of the discharge in a plasma reactor system comprising a tuning box having variable capacitors is described. The impedance of the discharge is determined in dependence on a pre-established relationship between the operational positions of the variable capacitors on the one hand and the impedance of the discharge on the other. The ionic current relative to the discharge in the reactor also may be determined by taking into account the high frequency voltage of the reactor.
摘要:
Enclosure for the treatment of substrates by the reactive plasma method, consisting in a known manner of an inlet and an outlet (12) for the circulation of a reactive gas at low pressure, a base supporting the substrate (10) to be treated being placed between two electrodes, one of which (3) is at the ground potential and the other (4) or radio-frequency electrode is brought to an alternative potential such as to create an electrical discharge in the enclosure. It is characterized in that the enclosure is metallic and lined by plasma torch spraying with a protective coating (2) of alumina (Al.sub.2 0.sub.3) of a thickness of about 300 micrometers.
摘要翻译:用于通过反应性等离子体法处理衬底的外壳,其以已知方式组成,用于在低压下循环反应性气体的入口和出口(12),支撑待处理衬底(10)的基底 在两个电极之间,其中一个(3)处于地电位,而另一个(4)或射频电极被置于另一电位,以便在外壳中产生放电。 其特征在于,外壳是金属的,并且通过等离子体喷枪喷涂具有约300微米厚度的氧化铝(Al 2 O 3)的保护涂层(2)。