Search Results - "Pletschen, Wilfried"

Reduced nonthermal rollover of wide-well GaInN light-emitting diodes by Maier, Markus, Köhler, Klaus, Kunzer, Michael, Pletschen, Wilfried, Wagner, Joachim

“…Nonthermal rollover (or efficiency droop) of the electroluminescence (EL) efficiency has been investigated for near-UV-emitting (AlGaIn)N single-well…”
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Gate-Recessed AlGaN/GaN Based Enhancement-Mode High Electron Mobility Transistors for High Frequency Operation by Maroldt, Stephan, Haupt, Christian, Pletschen, Wilfried, Müller, Stefan, Quay, Rüdiger, Ambacher, Oliver, Schippel, Christian, Schwierz, Frank

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High Power Efficiency AlGaN-Based Ultraviolet Light-Emitting Diodes by Passow, Thorsten, Gutt, Richard, Kunzer, Michael, Pletschen, Wilfried, Kirste, Lutz, Forghani, Kamran, Scholz, Ferdinand, Köhler, Klaus, Wagner, Joachim

“…High-efficiency AlGaN-based 355 nm UV light-emitting diodes (LEDs) grown on low-dislocation-density AlGaN/sapphire templates with an output power of 9.8 mW…”
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GaN-based high-frequency devices and circuits: A Fraunhofer perspective by Waltereit, Patrick, Bronner, Wolfgang, Quay, Rüdiger, Dammann, Michael, Cäsar, Markus, Müller, Stefan, van Raay, Friedbert, Kiefer, Rudolf, Brückner, Peter, Kühn, Jutta, Musser, Markus, Kirste, Lutz, Haupt, Christian, Pletschen, Wilfried, Lim, Taek, Aidam, Rolf, Mikulla, Michael, Ambacher, Oliver

“…We present the current status of our technology for GaN‐based HEMTs and MMICs as well as results ranging from the L‐band up to the W‐band. Epitaxial growth is…”
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Investigation of Leakage Current of AlGaN/GaN HEMTs Under Pinch-Off Condition by Electroluminescence Microscopy by Baeumler, Martina, Gütle, Frank, Polyakov, Vladimir, Cäsar, Markus, Dammann, Michael, Konstanzer, Helmer, Pletschen, Wilfried, Bronner, Wolfgang, Quay, Rüdiger, Waltereit, Patrick, Mikulla, Michael, Ambacher, Oliver, Bourgeois, Franck, Behtash, Reza, Riepe, Klaus J., van der Wel, Paul J., Klappe, Jos, Rödle, Thomas

“…Results from on-wafer electroluminescence (EL) microscopy on AlGaN/GaN high-electron-mobility transistors with leakage currents varying over four orders of…”
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Corrugated piezoelectric membranes for energy harvesting from aperiodic vibrations by Heidrich, Nicola, Knöbber, Fabian, Polyakov, Vladimir, Cimalla, Volker, Pletschen, Wilfried, Sah, Ram Ekwal, Kirste, Lutz, Leopold, Steffen, Hampl, Stefan, Ambacher, Oliver, Lebedev, Vadim

“…In this work we report on non-resonant piezoelectric micro-energy-harvesters based on corrugated membranes made from aluminium nitride. These harvesters were…”
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Investigation of Leakage Current of AIGaN/GaN HEMTs Under Pinch-Off Condition by Electroluminescence Microscopy by BAEUMLER, Martina, GÜTLE, Frank, MIKULLA, Michael, AMBACHER, Oliver, BOURGEOIS, Franck, BEHTASH, Reza, RIEPE, Klaus J, VAN DER WEL, Paul J, KLAPPE, Jos, RÖDLE, Thomas, POLYAKOV, Vladimir, CÄSAR, Markus, DAMMANN, Michael, KONSTANZER, Helmer, PLETSCHEN, Wilfried, BRONNER, Wolfgang, QUAY, Rüdiger, WALTEREIT, Patrick

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GaAs bipolar transistors with a Ga0.5In0.5P hole barrier layer and carbon-doped base grown by MOVPE by LAUTERBACH, T, PLETSCHEN, W, BACHEM, K. H

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