30 May 2017 Polymer based 3D photonic crystals applied on the surface of LEDs and photodiodes
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Progress in nanotechnologies accelerated the polymer based photonics, where simple and cheap solutions often bring comparable and sometimes also novel interesting results. Good candidates are polymer photoresists and siloxane materials with unique mechanical and optical properties. We present laser lithography as efficient tool for fabrication of different three-dimensional (3D) structures embedded in polydimethylsiloxane (PDMS) membranes. Presented concept of PDMS based thin membranes with 3D structures works as an effective diffraction element for modification of radiation pattern diagram of light emitting diodes and changes also the angular photoresponse of photodiodes. All these results were demonstrated on two types of 3D structures – spheres arranged in cubic lattice and woodpile structure.
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Dušan Pudiš, Dušan Pudiš, Matej Goraus, Matej Goraus, Marek Tłaczała, Marek Tłaczała, Peter Gašo, Peter Gašo, Jaroslav Kováč, Jaroslav Kováč, Wojciech Dawidowski, Wojciech Dawidowski, Daniel Jandura, Daniel Jandura, Ľuboš Šušlik, Ľuboš Šušlik, Jana Ďurišová, Jana Ďurišová, Ivana Lettrichová, Ivana Lettrichová, Beata Ściana, Beata Ściana, } "Polymer based 3D photonic crystals applied on the surface of LEDs and photodiodes", Proc. SPIE 10249, Integrated Photonics: Materials, Devices, and Applications IV, 102490S (30 May 2017); doi: 10.1117/12.2265759; https://doi.org/10.1117/12.2265759

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