Zobrazeno 1 - 10
of 127
pro vyhledávání: '"G. Danev"'
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 140:444-450
Nanocomposite layers 250 nm copper phthalocyanine/polyimide prepared by simultaneous vapour deposition of three different sources were studied. Different concentrations of copper phthalocyanine as a “guest” in polyimide matrix as a function of co
Publikováno v:
Journal of Molecular Structure. 1074:100-106
In this paper solid state imidization reactions of azo-polyimide thin films prepared at different temperatures have been investigated by FTIR spectroscopy. The starting precursors DAAB (4,4′-diaminoazobenzene) and PMDA (pyromellitic dianhydride) we
Publikováno v:
Applied Physics A. 95:639-642
Microbumps on BK7-glass are made by nanosecond KrF-excimer laser irradiation. Bumps with heights in the micrometer-range and a diameter of about 20 μm are reproducibly obtained in the case of a preheated glass substrate. Preheating and laser-induced
Publikováno v:
Journal of Polymer Research. 15:309-318
Poly(tetrafluoroethylene) films were surface modified by argon plasma treatment followed by graft polymerization. Peroxidе groups were introduced on the surface of poly(tetrafluoroethylene) films after plasma treatment and the consequent contact wit
Publikováno v:
Solar Energy Materials and Solar Cells. 86:421-426
An a-C:H-based absorber layer for photovoltaic application was fabricated by a DC PECVD. The stepped voltage biasing of the deposition process makes it possible to tailor the bandgap of the manufactured layers and match them to the solar spectrum. Su
Publikováno v:
Vacuum. 76:223-226
The present paper forwards a study related to a new type of process for production of thin organic layers. Energy-stimulated processes based on electron-assisted deposition in vacuum are implemented. A system for electron bombardment of the molecular
Publikováno v:
Vacuum. 76:237-240
Temperature dependencies of the conductivity in thin vacuum-evaporated α-form copper phthalocyanine (CuPc) films with columnar structure were investigated. It was found that the CuPc–O2 interaction is fully reversible. Oxygen can be removed after
Density-of-states function in metal-free phthalocyanine: effect of exposure to chlorodifluoromethane
Publikováno v:
Macromolecular Symposia. 212:515-522
Changes in the energy structure of local states during the exposure of metal-free phthalocyanine films to chlorodifluoromethane were studied using the technique of thermomodulated space-charge-limited currents. The broadening of the energy distributi
Publikováno v:
Vacuum. 70:37-45
Vacuum-deposited polyimide (PI) thin films have been prepared by co-deposition of precursor pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA) followed by thermal treatment. The dependency of the optical and electrical properties, chemical
Publikováno v:
Applied Surface Science. 168:162-165
A bulk polyimide system prepared by pressing of the precursor monomers 4,4′-oxidianiline (ODA) and 1,2,4,5-benzenetetracarboxylic or pyromellitic dianhydride (PMDA) mixtures has been investigated. The synthesized bulk polyimide is formed as a resul