The impact of medium frequency pulsed magnetron discharge power on the single probe Langmuir measurements and resulted plasma parameters

Wiatrowski, A.; Posadowski, W. M.

doi:10.1515/msp-2016-0012

Artykuł - szczegóły

Tytuł artykułu

The impact of medium frequency pulsed magnetron discharge power on the single probe Langmuir measurements and resulted plasma parameters

Autorzy

Wiatrowski A. , Posadowski W. M.

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.1515/msp-2016-0012

Warianty tytułu

Języki publikacji

Abstrakty

The resonant type power supplies of medium frequency designed for magnetron sputtering processes often use pulse density modulation to regulate the average discharge power level. While the output power level changes then number of pulses in a group changes, but the discharge current pulses are the same from pulse to pulse: their parameters (duration time, amplitude) do not change with the discharge power. The goal of this paper is to present the influence of medium frequency discharge power level on the direct current I-V characteristics of a single Langmuir probe and resulting plasma parameters caused by the pulse density modulation. The sputtering processes of titanium and copper were diagnosed at two spatial positions. The measured Langmuir probe I-V characteristics showed strong dependence on the discharge power. As the discharge powering pulses stay the same with the discharge power level change, such influence was unlikely to occur. Using time-resolved analysis of probe current waveforms the origin of this influence was indicated. The influence of discharge power level on the single probe Langmuir I-V characteristics and resulting plasma parameters was eliminated using a simple method of scaling the results. Finally, the reliable plasma parameters were calculated.

Słowa kluczowe

titanium copper magnetron sputtering pulsed magnetron sputtering medium frequency pulsed magnetron sputtering langmuir probe measurements Dora Power Systems

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2016

Tom

Vol. 34, No. 2

Strony

374--385

Opis fizyczny

Bibliogr. 47 poz., rys.

Twórcy

autor

Wiatrowski A.

Artur.Wiatrowski@pwr.edu.pl

Faculty of Microsystems Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

autor

Posadowski W. M.

Faculty of Microsystems Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-1eff7082-46f9-4c6f-9375-bf2b5790331a