Hermetic SMD-type reflector cavity packaging for DUV LEDs

Ulli Hansen; Simon Maus; Oliver Gyenge; Xiaodong Hu; Marco Queisser; Sebastian Marx

doi:10.1117/12.2545026

25 February 2020 Hermetic SMD-type reflector cavity packaging for DUV LEDs

Ulli Hansen, Simon Maus, Oliver Gyenge, Xiaodong Hu, Marco Queisser, Sebastian Marx

Proceedings Volume 11302, Light-Emitting Devices, Materials, and Applications XXIV; 113021F (2020) https://doi.org/10.1117/12.2545026
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Packaging materials usable for DUV-LEDs are limited as most organic materials are affected by DUV radiation. Packages used are TO-packages or 3D-structured ceramic housings with quartz lid. Due to DUV-LEDs radiating up to 50% of their light to the sides a significant share is lost.

This paper describes a hermetic SMD-compatible packaging approach that integrates reflectors into a quartz window to maximize the light extraction. Side emitted and otherwise wasted light is redirected towards the surface. It avoids costly 3D-structured ceramics and improves the overall thermal performance. Design choices of the reflector structures allow to tailor the radiation patterns of the LEDs.

Conference Presentation

Citation Download Citation

Ulli Hansen, Simon Maus, Oliver Gyenge, Xiaodong Hu, Marco Queisser, and Sebastian Marx "Hermetic SMD-type reflector cavity packaging for DUV LEDs", Proc. SPIE 11302, Light-Emitting Devices, Materials, and Applications XXIV, 113021F (25 February 2020); https://doi.org/10.1117/12.2545026

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