In this study, metal films are fabricated by using an in-line reactive direct current magnetron sputtering system. The aluminum–titanium (AlTi) back contacts are prepared by changing the pressure from 10 mTorr to 25 mTorr. The optical, electrical and structural properties of the metal back contacts are investigated. The solar cells with the AlTi had lower contact resistance than those with the ...

Careful preparation and cleaning of various types of components is indispensable prior to their surface treatment or final assembly. Various surface treatment operations that require such care include vacuum deposition, electrodeposition, electroless deposition, various dip coatings, etc. Surface preparation is essential for achieving good and firmly adhered coatings. Trace of residual surface ...

Ahlberg, P. 2016. Graphene Implementation Study in Semiconductor Processing. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1377. 62 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9585-5. Graphene, with its two-dimensional nature and unique properties, has for over a decade captured enormous interests in both industry and academ...

Advancement in vacuum technologies and vapor deposition processes during last decades has led to the introduction of many modern coatings on metal cutting tools. Even in such an advanced vacuum coating techniques, the failure is not due to the wear of the coating but rather due to the lack of coating adhesion to the substrate. In this work, the coating adhesion test results were performed which...

We report on free-standing NiTi alloy nanowires (120 nm × 75 nm) fabricated using a technique referred to as "nanoskiving", which complements conventional thin film sputter deposition with ultramicrotomy for thin sectioning. To date, the technique has been limited to pure metals without exploring metallic alloys. Leveraging the technique for the fabrication of shape memory alloy (SMA) nanostruc...

Using Monte Carlo simulations and experimental results, we show that for common thin film deposition techniques, such as sputter deposition and chemical vapor deposition, a mound structure can be formed with a characteristic length scale, or "wavelength" lambda, that describes the separation of the mounds. We show that the temporal evolution of lambda is distinctly different from that of the mo...