Soluble precursors of 2,3-naphthalocyanine (Nc) and phthalocyanine (Pc) were prepared and were converted into insoluble semiconducting thin films of Pc and Nc by heating after fabrication via spin-coating.

• Spin-coated and thermally evaporated As 33 S 67 chalcogenide thin films were studied. Submicron diffraction gratings prepared by soft PDMS stamp hot embossing. Deposition technique thermal treatment influence on structure depth was Formation of structures below temperature glass transition observed. Hypothesis different mass transport mechanism in spin-coated film presented. Chalcogenide vitr...

a humidity sensor thin film based on nanoporous pbwo4-wo3 composites has been prepared by spin coating technique with different weight ratio of pbwo4 (pb) and wo3 (wo) (pwwo-01, pwwo-82, pwwo-64, pwwo-46, pwwo-28, pwwo-01) and their humidity sensing properties have also been investigated at different relative humidity (rh) in the range of 5% - 98% at room temperature with dc resistance. it is f...

The bottleneck for large-scale processing within perovskite solar cells (PSCs) development is the stringent need uniform thin films. On a lab scale, spin coating methodology with acceptable uncertainty ensures high level of uniformity minimal roughness, no voids, and reproducible procedures. However, technique strongly limited up-scaling because out range from center to edge, resulting in areas...

Controlling and optimizing the alignment of liquid crystals is a crucial process for display applications. Here, we investigate the effects of humidity and surface types on photoalignment of an azo-dye brilliant yellow (BY). Specifically, the effect of humidity on the photoalignment of BY was studied at the stage of: substrate storage before coating; during the spin-coating process; between fil...

The target was to study and develop industrially suitable methods to apply thermoplastic coatings on plywood. Typically, wear and climatic resistance for wooden sheets, such as chip board and plywood, is achieved by thermosetting resin coating (e.g. phenolformaldehyde). However, economical and environmental issues are driving towards thermoplastic coatings (e.g. polyethylene) in such products. ...

A. Evans*, C. Benel, A. J. Darbandi, H. Hahn, J. Martynczuk, L. J. Gauckler, M. Prestat 1 Nonmetallic Inorganic Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland 2 Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany 3 Joint Research Laboratory Nanomaterials/Technische Universität Darmstadt and Karlsruhe Institute of Technology, Darmstad...

A representative fabrication processing of SU-8 photoresist, Ultraviolet (UV) lithography is usually composed of spin coat, soft bake, UV exposure, post exposure bake (PEB), development and optional hard bake, etc. The exposed region of SU-8 is crosslinked during the PEB process and its physical properties highly depend on UV exposure and PEB condition. This work was initiated to investigate if...

The issue of how to transfer a pattern onto a wafer during photolithography is very important. Normally, the resist is treated as a patterntransferring medium. Such a medium should have a very smooth surface to reduce the focus error. In this experiment, spin coating is used. The velocity of the center differs from that of the outer edges of a rotating disk, so a perfectly smooth surface cannot...