Dr. Jens C. Rass Profile

Dr. Jens C. Rass

CEO at Ferdinand-Braun-Institut

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 13 March 2024 Paper

Paper

Defects, performance, and reliability in UVC LEDs

Matteo Meneghini, Nicola Roccato, Francesco Piva, Marco Pilati, Carlo De Santi, Matteo Buffolo, Norman Susilo, David Hauer Vidal, Anton Muhin, Luca Sulmoni, Jan Ruschel, Johannes Glaab, Jens Rass, Sven Einfeldt, Tim Wernicke, Michael Kneissl, Gaudenzio Meneghesso, Enrico Zanoni

Proceedings Volume 12906, 129060C (2024) https://doi.org/10.1117/12.3001050

KEYWORDS: Light emitting diodes, Reliability, Magnesium, Simulations, Quantum devices, Ultraviolet light emitting diodes, TCAD, Electrons, Doping, Optics manufacturing

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Proceedings Article | 13 March 2024 Presentation

Presentation

Prospects of far-UVC LED technology

Michael Kneissl, Giulia Cardinali, Martin Guttmann, Anton Muhin, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Hyun-Kyong Cho, Johannes Glaab, Tim Kolbe, Jan Ruschel, Sylvia Hagedorn, Neysha Lobo-Ploch, Carsten Netzel, Jens Rass, Sven Einfeldt, Markus Weyers

Proceedings Volume PC12906, PC1290609 (2024) https://doi.org/10.1117/12.3014216

KEYWORDS: Light emitting diodes, External quantum efficiency, Quantum light, Quantum efficiency, Ultraviolet radiation, Skin, Quantum technology applications, Quantum emitters, Pathogens, Dielectric polarization

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Proceedings Article | 9 March 2024 Presentation

Presentation

Spatially resolved effects in UV LEDs with relevance for device performance and reliability

Jan Ruschel, Tim Kolbe, Jens Tomm, Johannes Glaab, Marcel Schilling, Sylvia Hagedorn, Jens Rass, Hyun Cho, Christoph Stölmacker, Martin Guttmann, Tim Wernicke, Markus Weyers, Michael Kneissl, Sven Einfeldt

Proceedings Volume PC12886, PC1288615 (2024) https://doi.org/10.1117/12.3002498

KEYWORDS: Ultraviolet light emitting diodes, Reliability, Light emitting diodes, Ultraviolet radiation, UV optics, Phototherapy, Lamps, Emission wavelengths, Design and modelling, Cameras

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Proceedings Article | 21 March 2023 Presentation

Presentation

Exploring the efficiency limits of AlGaN multi-quantum well deep UV-LEDs

Michael Kneissl, Giulia Cardinali, Martin Guttmann, Anton Muhin, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Hyun Kyong Cho, Johannes Glaab, Arne Knauer, Tim Kolbe, Jan Ruschel, Sylvia Hagedorn, Neysha Lobo-Ploch, Carsten Netzel, Jens Rass, Sven Einfeldt, Markus Weyers

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2651983

KEYWORDS: Light emitting diodes, External quantum efficiency, Skin, Sapphire, Deep ultraviolet, Aluminum nitride, Viruses, Ultraviolet light emitting diodes, Toxic gases, Polarization

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Proceedings Article | 21 March 2023 Presentation

Presentation

Advances in far-UVC LEDs and irradiation systems for medicine and sensing

Sven Einfeldt, Jan Ruschel, Hyun Kyong Cho, Jens Rass, Martin Guttmann, Thomas Filler, Marcel Schilling, Tim Kolbe, Arne Knauer, Sylvia Hagedorn, Luca Sulmoni, Heiko Gundlach, Christoph Stoelmacker, Steffen Knigge, Johannes Glaab, Tim Wernicke, Lucas Wittenbecher, Neysha Lobo Ploch, Markus Weyers, Olaf Krueger, Ulrike Woggon, Axel Kramer, Martina Meinke, Michael Kneissl

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2648706

KEYWORDS: Light emitting diodes, Sensing systems, Medicine, Ultraviolet light emitting diodes, Skin, Semiconductors, Pollution detection, Pathogens, Packaging, Oxides

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Proceedings Article | 9 March 2022 Presentation

Presentation

Development of far-UVC LEDs and their application in irradiation systems for antisepsis and sensing

Neysha Lobo Ploch, Hyun Kyong Cho, Thomas Filler, Johannes Glaab, Heiko Gundlach, Martin Guttmann, Sylvia Hagedorn, Frank Mehnke, Jens Rass, Jan Ruschel, Marcel Schilling, Luca Sulmoni, Tim Wernicke, Lucas Wittenbecher, Ulrike Woggon, Axel Kramer, Martina Meinke, Michael Kneissl, Markus Weyers, Ulrike Winterwerber, Sven Einfeldt

Proceedings Volume PC12022, PC120220D (2022) https://doi.org/10.1117/12.2607275

KEYWORDS: Light emitting diodes, Skin, Sensing systems, Pathogens, Metals, Packaging, Optical filters, Gases

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Proceedings Article | 5 March 2021 Presentation

Presentation

AlGaN-based deep UV LEDs: applications and challenges

Michael Kneissl, Giulia Cardinali, Johannes Enslin, Christian Kuhn, Martin Guttmann, Frank Mehnke, Luca Sulmoni, Norman Susilo, Tim Wernicke, Hyun Kyong Cho, Johannes Glaab, Jan Ruschel, Sylvia Hagedorn, Neyhsa Lobo-Ploch, Carsten Netzel, Jens Rass, Sven Einfeldt, Markus Weyers

Proceedings Volume 11686, 116860Y (2021) https://doi.org/10.1117/12.2584960

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Proceedings Article | 14 March 2018 Presentation

Presentation

From heterostructure design to package: development of efficient and reliable UVB LEDs (Conference Presentation)

Neysha Lobo Ploch, Tim Kolbe, Arne Knauer, Jens Rass, Hyun Kyong Cho, Johannes Glaab, Jan Ruschel, Anna Andrle, Sylvia Hagedorn, Katrin Hilbrich, Christoph Stoelmacker, Steffen Knigge, Maria Reiner, Ina Ostermay, Andreas Thies, Deepak Prasai, Olaf Krueger, Sven Einfeldt, Markus Weyers, Michael Kneissl

Proceedings Volume 10532, 1053220 (2018) https://doi.org/10.1117/12.2287131

KEYWORDS: Light emitting diodes, Heterojunctions, Electron beam lithography, Ultraviolet radiation, Packaging, Ultraviolet light emitting diodes, Mercury, Lamps, Phototherapy, Vapor phase epitaxy

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Proceedings Article | 15 February 2018 Paper

Paper

Thermocompression bonding for high-power-UV LEDs

Indira Kaepplinger, Dominik Karolewski, Geert Brockmann, Thomas Ortlepp, Olaf Brodersen, Andreas Thies, Jens Rass, Sven Einfeldt, Neysha Lobo-Ploch, Christoph Stoelmacker, Frank Schnieder

Proceedings Volume 10554, 105541B (2018) https://doi.org/10.1117/12.2287720

KEYWORDS: Light emitting diodes, Ultraviolet radiation, Copper, Metals

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Proceedings Article | 15 February 2018 Paper

Paper

Defect-generation and diffusion in (In)AlGaN-based UV-B LEDs submitted to constant current stress

D. Monti, M. Meneghini, C. De Santi, S. Da Ruos, G. Meneghesso, E. Zanoni, J. Glaab, J. Rass, S. Einfeldt, F. Mehnke, J. Enslin, T. Wernicke, M. Kneissl

Proceedings Volume 10554, 1055410 (2018) https://doi.org/10.1117/12.2292202

KEYWORDS: Quantum wells, Light emitting diodes, Diffusion, Electroluminescence, Gallium nitride

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Proceedings Article | 16 February 2017 Paper

Paper

Defect generation in deep-UV AlGaN-based LEDs investigated by electrical and spectroscopic characterisation

Desiree Monti, Matteo Meneghini, Carlo De Santi, Gaudenzio Meneghesso, Enrico Zanoni, Johannes Glaab, Jens Rass, Sven Einfeldt, Frank Mehnke, Tim Wernicke, Michael Kneissl

Proceedings Volume 10124, 101240T (2017) https://doi.org/10.1117/12.2253843

KEYWORDS: Light emitting diodes, Deep ultraviolet, Optical spectroscopy, Ultraviolet sources, Nitrogen, Internal quantum efficiency, Electro optics, Spectroscopes, UV optics, Magnesium, Quantum wells, Spectroscopy, Statistical analysis, Quantum efficiency, Electroluminescence

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Proceedings Article | 26 February 2016 Paper

Paper

Influence of the LED heterostructure on the degradation behavior of (InAlGa)N-based UV-B LEDs

Johannes Glaab, Neysha Lobo Ploch, Jens Rass, Tim Kolbe, Tim Wernicke, Frank Mehnke, Christian Kuhn, Johannes Enslin, Christoph Stölmacker, Viola Kueller, Arne Knauer, Sven Einfeldt, Markus Weyers, Michael Kneissl

Proceedings Volume 9748, 97481O (2016) https://doi.org/10.1117/12.2208906

KEYWORDS: Light emitting diodes, Ultraviolet light emitting diodes, Heterojunctions, Ultraviolet radiation, Vapor phase epitaxy, Quantum wells, Luminescence, Aluminum nitride, Magnesium, Diffusion, Electro optics, Chemical species

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Proceedings Article | 13 March 2015 Paper

Paper

High-power UV-B LEDs with long lifetime

Jens Rass, Tim Kolbe, Neysha Lobo-Ploch, Tim Wernicke, Frank Mehnke, Christian Kuhn, Johannes Enslin, Martin Guttmann, Christoph Reich, Anna Mogilatenko, Johannes Glaab, Christoph Stoelmacker, Mickael Lapeyrade, Sven Einfeldt, Markus Weyers, Michael Kneissl

Proceedings Volume 9363, 93631K (2015) https://doi.org/10.1117/12.2077426

KEYWORDS: Light emitting diodes, Electron beam lithography, Aluminum nitride, Aluminum, Polarization, Luminescence, Sapphire, External quantum efficiency, Quantum wells, Ultraviolet radiation

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Proceedings Article | 28 February 2012 Paper

Paper

Auger effect in nonpolar quantum wells

Lukas Schade, Ulrich Schwarz, Tim Wernicke, Jens Rass, Simon Ploch, Markus Weyers, Michael Kneissl

Proceedings Volume 8262, 82620K (2012) https://doi.org/10.1117/12.905955

KEYWORDS: Quantum wells, Polarization, Indium gallium nitride, Gallium nitride, Quantum efficiency, Light emitting diodes, Internal quantum efficiency, Promethium, Crystals, Indium

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Proceedings Article | 28 February 2012 Paper

Paper

Polarization of eigenmodes and the effect on the anisotropic gain in laser structures on nonpolar and semipolar GaN

Jens Rass, Tim Wernicke, Simon Ploch, Moritz Brendel, Andreas Kruse, Andreas Hangleiter, Wolfgang Scheibenzuber, Ulrich Schwarz, Markus Weyers, Michael Kneissl

Proceedings Volume 8262, 826218 (2012) https://doi.org/10.1117/12.907865

KEYWORDS: Polarization, Crystals, Resonators, Laser resonators, Laser damage threshold, Quantum wells, Gallium nitride, Waveguides, Indium, Semiconductor lasers

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Proceedings Article | 3 September 2008 Paper

Paper

Optical characterization of photopolymer and photoresist materials for storage, sensing, and security applications

Timo Feid, Sven Frohmann, Jens Rass, Christian Müller, Susanna Orlic

Proceedings Volume 7053, 705303 (2008) https://doi.org/10.1117/12.797290

KEYWORDS: Diffraction gratings, Diffraction, Polymers, Holography, Photoresist materials, Modulation, Reflectivity, Refractive index, Data storage, Camera shutters

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Showing 5 of 16 publications

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