Dr. Ronny Kirste Profile

Dr. Ronny Kirste

at Adroit Materials

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Author

Publications (12)

Proceedings Article | 9 March 2024 Presentation

Recent progress of AlGaN based UVC detectors

Ronny Kirste, Pramod Reddy, Ramon Collazo, Zlatko Sitar

Proceedings Volume PC12886, PC1288616 (2024) https://doi.org/10.1117/12.3003035

KEYWORDS: Aluminum gallium nitride, Quantum devices, Quantum light, Quantum efficiency, Photon counting, Avalanche photodetectors, Aluminum, Visible radiation, Ultraviolet radiation, Spectroscopes

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Proceedings Article | 21 March 2023 Presentation

Wing tilt in ELO grown GaN

Ronny Kirste, Seiji Mita, Houston Dycus, Jack Almeter, James Tweedie, James Loveless, Pramod Reddy, Ramon Collazo, Zlatko Sitar

Proceedings Volume PC12421, (2023) https://doi.org/10.1117/12.2650564

KEYWORDS: Gallium nitride, Epitaxial lateral overgrowth, Silica, Transmission electron microscopy, Optical lithography, Crystals, Scanning electron microscopy, Sapphire, Homoepitaxy

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Proceedings Article | 17 March 2023 Presentation

Color centers in AlN as qubit candidates: point defect management

Ramon Collazo, Pegah Bagheri, Ronny Kirste, Pramod Reddy, Seiji Mita, Zlatko Sitar

Proceedings Volume PC12430, PC124300Y (2023) https://doi.org/10.1117/12.2652657

KEYWORDS: Aluminum nitride, Color centers, Quantum communications, Quantum computing, Nitrogen, Luminescence, Doping, Compound parabolic concentrators, Annealing

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Proceedings Article | 17 March 2023 Presentation

Formation and characterization of Ti-Vacancy complex in AlN as a candidate for qubit

Pegah Bagheri, Ronny Kirste, Pramod Reddy, Seiji Mita, Ramon Collazo, Zlatko Sitar

Proceedings Volume PC12430, PC124300Z (2023) https://doi.org/10.1117/12.2644867

KEYWORDS: Aluminum nitride, Quantum communications, Color centers, Scanning transmission electron microscopy, Quantum computing, Thermodynamics, Spectroscopy, Semiconductors, Photonic devices, Optical properties

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Proceedings Article | 5 March 2022 Presentation

Growth of relaxed AlGaN layers on native GaN

Ronny Kirste, Seiji Mita, Jordan Almeter, Ramon Collazo, Zlatko Sitar

Proceedings Volume PC12001, PC1200106 (2022) https://doi.org/10.1117/12.2606422

KEYWORDS: Gallium nitride, Epitaxial lateral overgrowth, Metalorganic chemical vapor deposition, Crystals, Transmission electron microscopy, Surface properties, Ranging, Optoelectronics, Optoelectronic devices, Optical lithography

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Proceedings Article | 14 March 2018 Presentation

Methods for point defect reduction in AlGaN (Conference Presentation)

Ramon Collazo, Pramod Reddy, Shun Washiyama, Felix Kaess, Ronny Kirste, Seiji Mita, James Tweedie, Zlatko Sitar

Proceedings Volume 10532, 1053209 (2018) https://doi.org/10.1117/12.2291937

KEYWORDS: Control systems, Luminescence, Gallium nitride, Ultraviolet radiation, Optoelectronics, Metalorganic chemical vapor deposition, Metals, Chemical species, Silicon, Magnesium

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Proceedings Article | 14 March 2018 Presentation

Polarity control in III-nitrides: new insights into an old problem (Conference Presentation)

Martin Albrecht, Natalia Stolyarchuk, Stefan Mohn, Toni Markurt, Ronny Kirste, Ramon Collazo, Aimeric Courville, Zlatko Sitar, Philippe Vennéguès

Proceedings Volume 10532, 105320C (2018) https://doi.org/10.1117/12.2291849

KEYWORDS: Sapphire, Aluminum, Transmission electron microscopy, Scanning transmission electron microscopy, Oxygen, Semiconductors, Tolerancing, Oxides, Aluminum nitride, Nanostructures

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Proceedings Article | 10 October 2017 Paper

Growth and characterization of GaN/AlGaN heterostructures on GaN substrate templates

Lance Hubbard, Nikolaus Dietz, Mark Vernon, Ramon Collazo, Seiji Mita, Ronny Kirste, Zlatko Sitar, Vincent Woods

Proceedings Volume 10378, 103780D (2017) https://doi.org/10.1117/12.2274932

KEYWORDS: Gallium nitride, Avalanche photodetectors, Aluminum nitride, Aluminum, Heterojunctions, Metalorganic chemical vapor deposition, Instrument modeling, Sensors, Reflectivity, Doping

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Proceedings Article | 26 February 2016 Paper

Strain engineered high reflectivity DBRs in the deep UV

A. Franke, M. Hoffmann, L. Hernandez-Balderrama, F. Kaess, I. Bryan, S. Washiyama, M. Bobea, J. Tweedie, R. Kirste, M. Gerhold, R. Collazo, Z. Sitar

Proceedings Volume 9748, 97481G (2016) https://doi.org/10.1117/12.2211700

KEYWORDS: Reflectivity, Metalorganic chemical vapor deposition, Ultraviolet radiation, Deep ultraviolet, Distributed Bragg reflectors, Aluminum nitride, Atomic force microscopy, Optical microcavities, Nanostructures, Aluminum, Reflectors, Interfaces, Semiconducting wafers, Ions, Epitaxy, Stereolithography

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Proceedings Article | 8 March 2014 Paper

Point defect management in GaN by Fermi-level control during growth

Marc Hoffmann, James Tweedie, Ronny Kirste, Zachary Bryan, Isaac Bryan, Michael Gerhold, Zlatko Sitar, Ramón Collazo

Proceedings Volume 8986, 89860T (2014) https://doi.org/10.1117/12.2041018

KEYWORDS: Magnesium, Gallium nitride, Doping, Ultraviolet radiation, Annealing, Luminescence, Excitons, Hydrogen, Semiconductors, Metalorganic chemical vapor deposition

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Proceedings Article | 4 February 2013 Paper

Fabrication and characterization of lateral polar GaN structures for second harmonic generation

Marc Hoffmann, Michael Gerhold, Ronny Kirste, Anthony Rice, Christer-Rajiv Akouala, Jinqiao Xie, Seiji Mita, Ramon Collazo, Zlatko Sitar

Proceedings Volume 8631, 86311T (2013) https://doi.org/10.1117/12.2008827

KEYWORDS: Gallium nitride, Etching, Reactive ion etching, Aluminum nitride, Sapphire, Interfaces, Atomic force microscopy, Ultraviolet radiation, Metalorganic chemical vapor deposition, Harmonic generation

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Proceedings Article | 18 August 2010 Paper

Reactor pressure: growth temperature relation for InN epilayers grown by high-pressure CVD

M. Buegler, S. Gamage, R. Atalay, J. Wang, I. Senevirathna, R. Kirste, T. Xu, M. Jamil, I. Ferguson, J. Tweedie, R. Collazo, A. Hoffmann, Z. Sitar, N. Dietz

Proceedings Volume 7784, 77840F (2010) https://doi.org/10.1117/12.860952

KEYWORDS: Indium nitride, Chemical vapor deposition, Raman spectroscopy, Crystals, Infrared spectroscopy, Indium, Heterojunctions, Gallium nitride, Nitrogen, Sapphire

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Showing 5 of 12 publications

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