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14 results on '"Heindl, Alexander"'

6. Die Pluralität von Solidaritäten und Formen der Kritik.

Author

Heindl, Alexander and Stüber, Karolin-Sophie

Subjects
POLITICAL philosophy, SOLIDARITY, STRUGGLE, DEBATE
Abstract

Copyright of SWS - Rundschau is the property of Verein fur interdisziplinare sozialwissenschaftliche Studien und Analysen and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019

11. (Invited) Wafer Bonding for the Manufacture of High-Brightness and High-Efficiency Light-Emitting Diodes

Author

Plossl, Andreas E., Baur, Johannes, Eissler, Dieter, Engl, Karl, Harle, Volker, Hahn, Berthold, Heindl, Alexander, Illek, Stefan, Klemp, Christoph, Rode, Patrick, Streubel, Klaus, and Tangrin, Ivar

Abstract

Wafer bonding based layer transfer approaches permit the fabrication of powerful volume or surface-emitting light-emitting diodes (LEDs). Here we briefly review the basic approaches taken and show some exemplary results of our metal-bonded UX:3-LEDs with buried mirror and buried metallic current distribution for both polarities, . The overall device performance benefits from the UX:3 variant of our ThinGaN technology: (i) at a drive current of 350 mA, a 5 % brightness increase for blue and green emission; through improved interaction of chip and phosphor coating, a 10-20% brightness increase for white LEDs; (iii) when trebling the current from 350 mA to 1 A, the sublinear brightness increase, called droop, is reduced to only 15%; (iv) at a 1 A drive current, a drop in forward voltage of only 200 mV occurs.

Published
2010

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