Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Reiner Windisch"'
Publikováno v:
Optics express. 25(3)
We examine the difference between the newly developed IES TM-30 color indices and some of the most common previously established color indices for LED systems which are used for lighting purposes, focusing on the influence of realistic spectral varia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::591c227be7d92aa3b147ae18e12da8ef
https://pubmed.ncbi.nlm.nih.gov/29519035
https://pubmed.ncbi.nlm.nih.gov/29519035
Autor:
C. Rooman, Gustaaf Borghs, G. H. Döhler, B. Dutta, A. Knobloch, Reiner Windisch, Paul Heremans
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 8:248-255
We present a detailed quantitative analysis of the light extraction and loss mechanisms in high-efficiency GaAs-AlGaAs surface-textured thin-film light-emitting diodes (LEDs). The analysis is based on a Monte Carlo simulation. Most input parameters,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::672a5593e1772243a03fbe389b2eb0db
https://doi.org/10.1109/2944.999177
https://doi.org/10.1109/2944.999177
Autor:
Peter Kiesel, A. Knobloch, Gustaaf Borghs, Paul Heremans, G. H. Döhler, C. Rooman, B. Dutta, Maarten Kuijk, Reiner Windisch
Publikováno v:
IEEE Journal of Quantum Electronics. 36:1445-1453
The dynamic behavior of high-efficiency light-emitting diodes (LEDs) is investigated theoretically and experimentally. A detailed theoretical description of the switch-on and switch-off transients of LEDs is derived. In the limit of small-signal modu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::640c26a50a388628c4c6fbcd2f5b8640
https://doi.org/10.1109/3.892565
https://doi.org/10.1109/3.892565
Autor:
Peter Kiesel, Paul Heremans, S Meinlschmidt, A. Knobloch, Reiner Windisch, Gustaaf Borghs, S. Schoberth, B. Dutta, G. H. Döhler
Publikováno v:
Journal of Optics A: Pure and Applied Optics. 1:512-516
Although surface texturing is applied in various kinds of devices like solar cells and light-emitting diodes (LEDs), the scattering phenomena occurring at textured surfaces have not been studied in detail yet. We present a novel technique which allow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e11c737274c0b8e00cafd1d63dc3659
https://doi.org/10.1088/1464-4258/1/4/317
https://doi.org/10.1088/1464-4258/1/4/317
Autor:
Ralph Wirth, K. Streubel, S. Illek, Siegmar Kugler, Rainer Butendeich, Reiner Windisch, Heribert Zull
Publikováno v:
IEEE Photonics Technology Letters. 19:774-776
Thin-film light-emitting diodes (LEDs) belong to the most successful LED concepts for achieving high efficiencies. The incorporation of buried microreflectors with inclined facets prevents the light generation under the top contact and bondpad and of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3700dbb4053cabdc0c5881f553c54cb0
https://doi.org/10.1109/lpt.2007.895886
https://doi.org/10.1109/lpt.2007.895886
Publikováno v:
2009 IEEE/LEOS Winter Topicals Meeting Series.
A large variety of nanostructures including surface roughening, photonic crystals and plasmonics has been applied to light-emitting diodes in order to improve their performance. This paper gives an overview of the different approaches and the obtaine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::275503b81647e2df17d35d6bf5bd509b
https://doi.org/10.1109/leoswt.2009.4771630
https://doi.org/10.1109/leoswt.2009.4771630
Publikováno v:
Light-Emitting Diodes: Research, Manufacturing, and Applications X.
The market entrance of thinfilm based, substrate-less LEDs has stimulated the field of high-brightness LEDs. One of the most prominent advantages of thinfilm LEDs is the possibility to achieve a high light extraction efficiency independently of the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4055371d7a41de41402a6acc7c6593cf
https://doi.org/10.1117/12.661559
https://doi.org/10.1117/12.661559
Publikováno v:
IEEE Photonics Technology Letters. 8:1325-1327
We investigated an electroabsorptive n-i-p-i waveguide modulator based on the Franz-Keldysh effect (FKE), which is especially designed to operate with very low voltage swings over a broad wavelength range. In order to contact the n-i-p-i structure, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53a8c9234af3a51ec443792514ec15b4
https://doi.org/10.1109/68.536643
https://doi.org/10.1109/68.536643
Autor:
Stefan Illek, Reiner Windisch, Rainer Butendeich, Klaus Streubel, Peter Stauss, Ralph Wirth, Wilhelm Dr. Stein, Walter Wegleiter, Heribert Zull, Paola Altieri
Publikováno v:
SPIE Proceedings.
In Thinfilm LEDs, the substrate absorption of the generated light is avoided by a metal reflector between the light emitting layer and the substrate. The light extraction can be further enhanced by buried microreflectors or surface texturing. We demo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f5d723f551a62c71471a598cd0e40c3
https://doi.org/10.1117/12.528938
https://doi.org/10.1117/12.528938
Autor:
Raimund Oberschmid, Paola Altieri, Reiner Windisch, Klaus Streubel, Norbert Linder, Arndt Jaeger, Peter Stauss
Publikováno v:
SPIE Proceedings.
Operation-induced degradation of internal quantum efficiency of high-brightness (Al x Ga 1-x ) 0.5 In 0.5 P light-emitting devices (LEDs) is analysed experimentally and theoretically. A test series of LEDs was grown by MOCVD with identical layer sequ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db01b5832ea0c899dc06a81224b4a185
https://doi.org/10.1117/12.529209
https://doi.org/10.1117/12.529209