Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Yoshinori Murazaki"'
Publikováno v:
IEICE Transactions on Electronics. :1860-1871
In search of suitable white-LED for general illumination, we fabricated various types of white-LEDs using different methods. As the first method, we used the multichip method in which multiple emitters were mounted in one package. This type showed a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5cedebdbfc4e6f14bf298bcd8149d5de
https://doi.org/10.1093/ietele/e88-c.9.1860
https://doi.org/10.1093/ietele/e88-c.9.1860
Autor:
Kouichiro Deguchi, Shinichi Nagahama, Tomoya Yanamoto, Tomotsugu Mitani, Daisuke Morita, Isamu Niki, Shinya Sonobe, Yukio Narukawa, Yoshinori Murazaki, Motokazu Yamada, Takahiro Naitou, Shuji Shioji, Masahiko Sano, Hiroto Tamaki, Takashi Mukai, Masatoshi Kameshima, S. Yamamoto
Publikováno v:
physica status solidi (a). 200:52-57
We review the recent progress of nitride-based light-emitting diodes (LEDs) and discuss the relation between dislocation density and quantum efficiency. We also discuss how to improve the external quantum efficiency of nitride-based LEDs. Secondly, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5942ab2b20781ad9625c43b2153ac201
https://doi.org/10.1002/pssa.200303326
https://doi.org/10.1002/pssa.200303326
Autor:
Takashi Mukai, Kunihiro Izuno, Hiroto Tamaki, Yoshinori Murazaki, Masatoshi Kameshima, Motokazu Yamada, Takahiro Naitou
Publikováno v:
Japanese Journal of Applied Physics. 42:L20-L23
We fabricated a high-color-rendering, red-enhanced white-light-emitting diode (LED) using a new red phosphor and a short-wavelength YAG phosphor. When the new white-LED was operated at a forward-bias current of 20 mA at room temperature (RT), color t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a862a28c04b3643af02e2deba376532c
https://doi.org/10.1143/jjap.42.l20
https://doi.org/10.1143/jjap.42.l20
Autor:
Motokazu Yamada, Takashi Mukai, Shinya Sonobe, Isamu Niki, Yukio Narukawa, Tomotsugu Mitani, Hiroto Tamaki, Daisuke Morita, Yoshinori Murazaki
Publikováno v:
SPIE Proceedings.
We show recent results of GaN based LEDs, the high efficiency blue LED, the high efficacy white LED, the high color rendering LED, the warm white LED, and the high output power 365-nm UV LED. The output power and the external efficiency of the high e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ef369edf275466c66ca13736c8f92b8
https://doi.org/10.1117/12.514069
https://doi.org/10.1117/12.514069
Publikováno v:
JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN. 83:445-446
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::addfd814fbf8a7532a1f6d827cba2161
https://doi.org/10.2150/jieij1980.83.7_445
https://doi.org/10.2150/jieij1980.83.7_445
Publikováno v:
Journal of Applied Physics. 100:113113
Luminescence and phosphorescence properties are investigated in two series of strontium aluminates, Sr4Al14O25:Eu2+ and SrAl2O4:Eu2+, codoped with rare earth (lanthanoid, Ln) ions. Persistent phosphorescence is observed for the phosphors codoped with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d102e64856f52c9194b71d87aa6a132e
https://doi.org/10.1063/1.2397284
https://doi.org/10.1063/1.2397284
Publikováno v:
JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN. 80:76-76
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4859f0a2c29ce6b917a39a63506ae67
https://doi.org/10.2150/jieij1980.80.appendix_76
https://doi.org/10.2150/jieij1980.80.appendix_76