Az Electronic Materials (luxembourg) S.a.r.l.

Friedrich-schiller-universitat Jena

Thueringisches Institut Fuer Textil-und Kunststoff-forschung E.v.

Thuringisches Institut Fur Textil Und Kunststoff-forschung E. V.

Thüringisches Institute Für Textile—und Kunstostoff-Forschung E. V.

Lars Blankenburg

Hartmut Wiezer

Klaus Rode

Hubert Liebe

Hannes Schache

Mario Schrödner

Gulnara Konkin

Elisabeth Klemm

Sandra Stojanovic

Steffi Sensfuss

Maher Al Ibrahim

Raja Shahid Ashraf

Munazza Shahid

Henning Austmann

Radiation cross-linking boosters for polyamides that include compounds which are solid at room temperature, migration stable, and thermally stable for the electron and gamma irradiation of components made of polyamide. Method of using radiation cross-linked polyamides in novel fields of application, for example, in food technology or to enable novel processing methods, for example extrusion by the use of polyallyl amides.

Radiation crosslinking boosters for aliphatic polyamides

The invention discloses a flexible, energy-self-sufficient UV dosimeter which optically indicates the absorbed dose on the basis of the intensity and duration of the irradiation via a color change. The invention contains one or more UV dosimeter modules. Exemplary UV dosimeter modules include at least one UV-sensitive photodiode (common electrode (), hole conductor layer (), UV absorber layer (), cathode ()) and an electrochromic element (common electrode (), ion storage layer (), electrolyte layer (), electrochromic layer made of redox active material (), transparent electrode ()), between which an insulator () and a conductor track () are arranged. The electrochromic element accumulates the charge generated by the UV-sensitive photodiode and indicates this by means of a color change. The UV dosimeter can be produced as an integrated circuit using thin-film technology by successively applying and structuring organic or inorganic functional layers.

UV dosimeter with color change

The invention relates polysilazane-containing coatings for increasing the light permeability of sun-facing covers of solar cells. The coating for surfaces contains at least one polysilazane of formula (1) &#x2014;(SiRR'R&#x2033;&#x2014;NR&#x2032;&#x2033;1)n- (1), wherein R&#x2032;, R&#x2033;, R&#x2032;&#x2033; are the same or different or represent an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group, n being an integer and n being chosen in such a manner that the perhydropolysilazane has a number average molecular weight of 150 to 150,000 g/mol, a solvent and a catalyst. The cured coating has a thickness of at least 0.50-10 micrometer, preferably 0.2 to 5 micrometer, especially preferred 0.5 to 1.5 micrometer. It is especially suitable as transmission-promoting coating for use in sun-facing covers of solar cells.

Polysilazane-containing coatings for increasing the conversion efficiency of encapsulated solar cells

New thieno[3,4-b]pyrazine copolymers are prepared by reacting 5,7-functionalized thieno[3,4-b]pyrazines with substituted aromatics in the presence of solvents, bases and polymerization catalysts, the copolymers thus prepared being employed preferably in the production of photovoltaic cells.

Process for preparing thieno[3,4-B] pyrazine copolymers,thieno[3,4-B]&#x2014;pyrazine copolymers prepared by this process, and their use

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Kahla, Germany

Lars Blankenburg