Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Mickael Lapeyrade"'
Autor:
Christian Kuhn, Tim Wernicke, Ute Zeimer, Marian Rabe, Michael Kneissl, Martin Guttmann, Christoph Reich, Frank Mehnke, Markus Weyers, Simon Kapanke, Sven Einfeldt, Arne Knauer, Hendrik Kruger, Jakob Jordan, Mickael Lapeyrade, Johannes Enslin, Hartmut Ewald
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 23:29-36
In this paper, we will present the development of a compact LED-based optical gas sensing system in the ultraviolet-C spectral region. This includes the design of the LED heterostructure emitting near 226 nm, the development of an LED chip, and the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::939b9d015003f3fe6fb6e4f06adfc38d
https://doi.org/10.1109/jstqe.2016.2597541
https://doi.org/10.1109/jstqe.2016.2597541
Autor:
Mickael Lapeyrade, Johannes Enslin, Markus Weyers, Michael Kneissl, Christoph Reich, Frank Mehnke, Sven Einfeldt, V. Kueller, Martin Guttmann, Tim Kolbe, Tim Wernicke, J. Ras, Neysha Lobo-Ploch, Arne Knauer, Johannes Glaab, Ute Zeimer, Christian Kuhn
Publikováno v:
2015 IEEE Summer Topicals Meeting Series (SUM).
Recent progress in the development of AlGaN-based materials and high-efficiency ultraviolet light emitting diodes (UV-LEDs) will be reviewed. The impact of UV-LEDs on applications in environmental sensing, life sciences, and medical diagnostics will
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::317ff0c529c0b51a5b003e96c0037e77
https://doi.org/10.1109/phosst.2015.7248167
https://doi.org/10.1109/phosst.2015.7248167
Autor:
Tim Wernicke, Christian Kuhn, Markus Weyers, Mickael Lapeyrade, Neysha Lobo-Ploch, Christoph Reich, Frank Mehnke, Johannes Glaab, Martin Guttmann, Sven Einfeldt, Florian Eberspach, Arne Knauer, Michael Kneissl
Publikováno v:
SPIE Proceedings.
We present UV-C LEDs emitting around 235 nm grown by MOVPE on ELO AlN/sapphire substrates. In order to account for the low conductivity of high Al content AlGaN layers and the associated high contact resistances, we designed an optimized compact LED
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6343ffd85b308a7d6b73c95e6169997
https://doi.org/10.1117/12.2076349
https://doi.org/10.1117/12.2076349
Autor:
Markus Weyers, Neysha Lobo-Ploch, Anna Mogilatenko, Tim Wernicke, Johannes Enslin, Jens Rass, Christian Kuhn, Martin Guttmann, Michael Kneissl, Mickael Lapeyrade, Tim Kolbe, Frank Mehnke, Sven Einfeldt, Christoph Reich, Johannes Glaab, Christoph Stoelmacker
Publikováno v:
SPIE Proceedings.
UV light emitters in the UV-B spectral range between 280 nm and 320 nm are of great interest for applications such as phototherapy, gas sensing, plant growth lighting, and UV curing. In this paper we present high power UV-B LEDs grown by MOVPE on sap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de95acdee6e38f3cf8aa583d1013443a
https://doi.org/10.1117/12.2077426
https://doi.org/10.1117/12.2077426
Autor:
M. Bickermann, Anna Mogilatenko, Jörg Jeschke, Tim Wernicke, Christian Kuhn, Christoph Reich, Martin Martens, M. Feneber, Mickael Lapeyrade, Jens Rass, Michael Kneissl, Johannes Enslin, S. Hagedorn, Carsten Hartmann, Rüdiger Goldhahn, Marcus Weyers, Frank Mehnke, V. Kueller, Arne Knauer, Sven Einfeldt, U. Zeimber, J. Wollweber
Publikováno v:
Light, Energy and the Environment 2015.
This paper will discuss the progress towards UV-laser diodes with emission wavelengths
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68cad952ba52994ab286aa69ee2fab32
https://doi.org/10.1364/soled.2015.dm2d.4
https://doi.org/10.1364/soled.2015.dm2d.4
Autor:
Michael Kneissl, Markus Weyers, Tim Kolbe, Frank Mehnke, Neysha Lobo Ploch, Sven Einfeldt, Rico Kelz, Christian Kuhn, Christoph Stölmacker, Tim Wernicke, Christian Ploch, Mickael Lapeyrade, Jens Rass, Johannes Glaab
Publikováno v:
MRS Proceedings. 1792
The reliability of InAlGaN multiple quantum well LEDs emitting around 308 nm has been investigated. The UV-B LEDs were stressed at constant current and current density, while the heat sink temperature was varied between 15°C and 80°C. The results r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36863053db6d923b0495454752b256a4
https://doi.org/10.1557/opl.2015.446
https://doi.org/10.1557/opl.2015.446
Autor:
Ralph-Stephan Unger, Tim Wernicke, Sabine Alamé, Patrick Vogt, Arne Knauer, Johannes Glaab, Christian Kuhn, Markus Weyers, Ute Zeimer, Mickael Lapeyrade, Anna Mogilatenko, Sven Einfeldt, Michael Kneissl
Publikováno v:
Journal of Applied Physics. 122:125701
In order to understand the electrical properties of V/Al/Ni/Au metal contacts to Si-doped Al0.75Ga0.25N layers, X-ray photoelectron spectroscopy analysis was performed on differently treated AlGaN:Si surfaces before metal deposition, and transmission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b2abee53276e3d136b95b3470c142b5
https://doi.org/10.1063/1.4993447
https://doi.org/10.1063/1.4993447
Autor:
Christian Kuhn, Markus Weyers, Michael Kneissl, Martin Guttmann, Frank Mehnke, Johannes Enslin, Tim Wernicke, Sven Einfeldt, Arne Knauer, Mickael Lapeyrade, Johannes Glaab, Christoph Reich
Publikováno v:
Semiconductor Science and Technology. 32:045019
The uniformity of emission from deep ultraviolet light emitting diodes (UV LEDs) is investigated. The AlGaN-based heterostructures of the UV LEDs emitting around 235 nm were grown by metalorganic vapor phase epitaxy on epitaxially laterally overgrown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e69548e6e43c6452d900cfdc191dde2
https://doi.org/10.1088/1361-6641/aa5a7a
https://doi.org/10.1088/1361-6641/aa5a7a
Autor:
Christian Kuhn, Martin Guttmann, Arne Knauer, Tim Wernicke, Mickael Lapeyrade, Christoph Reich, Frank Mehnke, Jens Rass, Sven Einfeldt, Rüdiger Goldhahn, Michael Kneissl, Markus Weyers, V. Kueller, Martin Feneberg
Publikováno v:
Applied Physics Letters. 107:142101
The optical polarization of emission from ultraviolet (UV) light emitting diodes (LEDs) based on (0001)-oriented AlxGa1−xN multiple quantum wells (MQWs) has been studied by simulations and electroluminescence measurements. With increasing aluminum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5789d53ce48359f670265c05d44dbefe
https://doi.org/10.1063/1.4932651
https://doi.org/10.1063/1.4932651
Autor:
Christian Ploch, Markus Weyers, Neysha Lobo Ploch, Mickael Lapeyrade, Christian Kuhn, Christoph Stölmacker, Tim Wernicke, Frank Mehnke, Sven Einfeldt, Jens Rass, Johannes Glaab, Michael Kneissl, Rico Kelz, Tim Kolbe
Publikováno v:
Journal of Applied Physics. 118:094504
The degradation of the electrical and optical properties of (InAlGa)N-based multiple quantum well light emitting diodes (LEDs) emitting near 308 nm under different stress conditions has been studied. LEDs with different emission areas were operated a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee4bb83407515839fd4f638262c7131c
https://doi.org/10.1063/1.4929656
https://doi.org/10.1063/1.4929656