Koninklijke Philips Corporation N.V.

Stichting Dutch Polymer Institute

Carlos C Sanchez

Dirk Jan Broer

Michael James Escuti

Cees C Bastiaansen

Michael George Debije

Cees W M Bastiaansen

Dick J Broer

The present invention relates to a process for the preparation of a polymeric relief structure by a) coating a substrate with a first coating composition comprising one or more radiation-sensitive ingredients, d) locally treating the coated substrate with electromagnetic radiation having a periodic or random radiation-intensity pattern, forming a latent image, e) polymerizing and/or crosslinking the resulting coated substrate to a first coating. This process is improved by applying a second coating composition on top of the first coating composition, said second coating composition comprising either an organic compound (C) of a monomeric nature and wherein Cis also polymerized during the process, or wherein said second coating comprises a dissolved polymer (C). As a result a polymeric relief structure is obtained, where a substrate is coated with a functional, stacked, bi-layer, in which each layer exhibits a specific, and from each other differing function.

Process for preparing a polymeric relief structure

A first aspect of the invention relates to a luminescent object comprising an aligned polymer that contains an oriented photoluminescent material, said aligned polymer having a pretilt angle of 10-90&#xb0;. The luminescent object according to the present invention may advantageously be employed in luminescent solar concentrator systems as it enables highly efficient transportation of radiation emitted by the photoluminescent material following exposure to incident solar light. Another aspect of the invention concerns a photovoltaic device comprising an electromagnetic radiation collection medium containing the aforementioned luminescent object and a photovoltaic cell capable of converting optical radiation to electrical energy which is optically coupled to the luminescent object. Further aspects of the invention include a fluorescent light activated display and a room lighting system comprising the aforementioned luminescent object.

Luminescent object comprising aligned polymers having a specific pretilt angle

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Saragossa, Spain

Carlos C Sanchez