volume 117 issue 11 pages 111102

Milliwatt power 233 nm AlGaN-based deep UV-LEDs on sapphire substrates

N Lobo Ploch 1, 2
Frank Mehnke 3
Luca Sulmoni 3
H. K. Cho 1
M. Guttmann 3
J Glaab 1
Katrin Hilbrich 1
Tim Wernicke 3
S. Einfeldt 1
Michael Kneissl 1, 3
Publication typeJournal Article
Publication date2020-09-14
scimago Q1
wos Q2
SJR0.896
CiteScore6.1
Impact factor3.6
ISSN00036951, 10773118
Physics and Astronomy (miscellaneous)
Abstract

Deep UV-LEDs (DUV-LEDs) emitting at 233 nm with an emission power of (1.9 ± 0.3) mW and an external quantum efficiency of (0.36 ± 0.07) % at 100 mA are presented. The entire DUV-LED process chain was optimized including the reduction of the dislocation density using epitaxially laterally overgrown AlN/sapphire substrates, development of vanadium-based low resistance n-metal contacts, and employment of high thermally conductive AlN packages. Estimated device lifetimes above 1500 h are achieved after a burn-in of 100 h. With the integration of a UV-transparent lens, a strong narrowing of the far-field pattern was achieved with a radiant intensity of 3 mW/sr measured at 20 mA.

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GOST |
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GOST Copy
Lobo Ploch N. et al. Milliwatt power 233 nm AlGaN-based deep UV-LEDs on sapphire substrates // Applied Physics Letters. 2020. Vol. 117. No. 11. p. 111102.
GOST all authors (up to 50) Copy
Lobo Ploch N., Mehnke F., Sulmoni L., Cho H. K., Guttmann M., Glaab J., Hilbrich K., Wernicke T., Einfeldt S., Kneissl M. Milliwatt power 233 nm AlGaN-based deep UV-LEDs on sapphire substrates // Applied Physics Letters. 2020. Vol. 117. No. 11. p. 111102.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1063/5.0015263
UR - https://doi.org/10.1063/5.0015263
TI - Milliwatt power 233 nm AlGaN-based deep UV-LEDs on sapphire substrates
T2 - Applied Physics Letters
AU - Lobo Ploch, N
AU - Mehnke, Frank
AU - Sulmoni, Luca
AU - Cho, H. K.
AU - Guttmann, M.
AU - Glaab, J
AU - Hilbrich, Katrin
AU - Wernicke, Tim
AU - Einfeldt, S.
AU - Kneissl, Michael
PY - 2020
DA - 2020/09/14
PB - AIP Publishing
SP - 111102
IS - 11
VL - 117
SN - 0003-6951
SN - 1077-3118
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2020_Lobo Ploch,
author = {N Lobo Ploch and Frank Mehnke and Luca Sulmoni and H. K. Cho and M. Guttmann and J Glaab and Katrin Hilbrich and Tim Wernicke and S. Einfeldt and Michael Kneissl},
title = {Milliwatt power 233 nm AlGaN-based deep UV-LEDs on sapphire substrates},
journal = {Applied Physics Letters},
year = {2020},
volume = {117},
publisher = {AIP Publishing},
month = {sep},
url = {https://doi.org/10.1063/5.0015263},
number = {11},
pages = {111102},
doi = {10.1063/5.0015263}
}
MLA
Cite this
MLA Copy
Lobo Ploch, N., et al. “Milliwatt power 233 nm AlGaN-based deep UV-LEDs on sapphire substrates.” Applied Physics Letters, vol. 117, no. 11, Sep. 2020, p. 111102. https://doi.org/10.1063/5.0015263.