Adhesive As-S-Se-I immersion lenses for enhancing radiation characteristics of mid-IR LEDs operating in wide temperature range |
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| Affiliation: | 1. Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic;2. Institut des Sciences Chimiques de Rennes, UMR-CNRS 6226, Equipe Verres et Céramiques, Université de Rennes 1, 35042 Rennes, France;3. Institute for Nuclear Research (ATOMKI), Hungarian Academy of Sciences, Bem tér 18/C, H-4026 Debrecen, Hungary;4. Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5/A14, 625 00 Brno, Czech Republic;5. Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic;6. CEPLANT, R&D Centre for Low-Cost Plasma and Nanotechnology Surface Modification, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic |
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| Abstract: | The influence of As-S-Se-I chalcogenide glass lenses on the integral and spectral power and pattern of LED radiation has been shown. Simulation of the influence of the refractive index on the integral power for two lens shapes has been performed. The wettability and adhesion force of As-S-Se-I melt has been determined for several electronic engineering materials. Mechanical stresses between chalcogenide glass and adjacent diode body materials have been calculated for −100 to 53 °C temperature range. Stability of the immersion lenses against cracking has been experimentally investigated for −150 to 53 °C temperature range. |
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| Keywords: | IR immersion lens Chalcogenide glass Mid-IR LED Adhesion force Stability against cracking CG" },{" #name" :" keyword" ," $" :{" id" :" k0035" }," $$" :[{" #name" :" text" ," _" :" chalcogenide glass CM" },{" #name" :" keyword" ," $" :{" id" :" k0045" }," $$" :[{" #name" :" text" ," _" :" chalcogenide melt |
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