Synthesis of hydrogenated amorphous carbon (a-C:H) thin films by HiPIMS-based processes
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
This thesis explores the feasibility of high power impulse magnetron sputtering (HiPIMS) to synthesize hydrogenated amorphous carbon (a-C:H) thin films in Ar-hydrocarbon ambient and the relationship between process parameters, gas phase composition and film properties. To this purpose a stable process based on HiPIMS and direct current magnetron sputtering (DCMS) has been developed. Four series of amorphous carbon thin films were deposited by hybrid HiPIMS-DCMS and pure DCMS processes at 15 mTorr pressure using different Ar-acetylene compositions and a substrate bias from 0 to -350 V. The effect of Ar-acetylene compositions and depositions processes on the film properties was investigated by characterizing the films using scanning electron microscopy (SEM), x-ray reflectometry (XRR), nanoindentation and elastic recoil detection analysis (ERDA). Moreover the process characterization was done by recording the optical emission spectrum and current and voltage waveforms of the hybrid HiPIMS-DCMS discharge. The characterization of the films revealed that the hybrid HiPIMS-DCMS process is a powerful tool for controlling the amorphous carbon film properties such as density, deposition rate, hardness and hydrogen content.
Place, publisher, year, edition, pages
2012. , 55 p.
HiPIMS, DCMS, hybrid HiPIMS-DCMS, magnetron sputtering, reactive sputtering.
Other Materials Engineering
IdentifiersURN: urn:nbn:se:liu:diva-84320ISRN: LITH-IFM-A-EX--12/2704--SEOAI: oai:DiVA.org:liu-84320DiVA: diva2:558724
Subject / course
2012-09-25, Jordan-Fermi, Linköping University, Linköping, 13:15 (English)
UppsokPhysics, Chemistry, Mathematics
Sarakinos, Kosts, ForskarassistentAijaz, Asim, Doktorand
Helmersson, Ulf, Professor