Highly stable three-band white light from an InGaN-based blue light-emitting diode chip precoated with (oxy)nitride green/red phosphors

Chih Chieh Yang; Chih Min Lin; Yi Jung Chen; Yi Tsuo Wu; Shih Ren Chuang; Ru Shi Liu; Shu Fen Hu

doi:10.1063/1.2714326

Highly stable three-band white light from an InGaN-based blue light-emitting diode chip precoated with (oxy)nitride green/red phosphors

Chih Chieh Yang, Chih Min Lin, Yi Jung Chen, Yi Tsuo Wu, Shih Ren Chuang, Ru Shi Liu^*, Shu Fen Hu

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

122 Citations (Scopus)

Abstract

A three-band white light-emitting diode (LED) was fabricated using an InGaN-based blue LED chip that emits 455 nm blue light, and green phosphor Sr Si2 O2 N2: Eu and red phosphor CaSi N2: Ce that emit 538 nm green and 642 nm red emissions, respectively, when excited by the 455 nm blue light. The luminous efficacy of this white LED is about 30 lmW at a dc of 20 mA. With increasing dc from 5.0 to 60 mA, both the coordinates x and y of the white LED tend to be the same, and consequently the Tc is the same and the Ra increases to 92.2.

Original language	English
Article number	123503
Journal	Applied Physics Letters
Volume	90
Issue number	12
DOIs	https://doi.org/10.1063/1.2714326
Publication status	Published - 2007

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Highly stable three-band white light from an InGaN-based blue light-emitting diode chip precoated with (oxy)nitride green/red phosphors",

abstract = "A three-band white light-emitting diode (LED) was fabricated using an InGaN-based blue LED chip that emits 455 nm blue light, and green phosphor Sr Si2 O2 N2: Eu and red phosphor CaSi N2: Ce that emit 538 nm green and 642 nm red emissions, respectively, when excited by the 455 nm blue light. The luminous efficacy of this white LED is about 30 lmW at a dc of 20 mA. With increasing dc from 5.0 to 60 mA, both the coordinates x and y of the white LED tend to be the same, and consequently the Tc is the same and the Ra increases to 92.2.",

author = "Yang, {Chih Chieh} and Lin, {Chih Min} and Chen, {Yi Jung} and Wu, {Yi Tsuo} and Chuang, {Shih Ren} and Liu, {Ru Shi} and Hu, {Shu Fen}",

note = "Funding Information: The authors would like to thank the financial supports from the National Science Council of Taiwan (Contract Nos. NSC 94-2113-M-002-030 and NSC 95-2113-M-002-009) and the Economic Affair of Taiwan (Contract No. 95-EC-17-A-07-S1-043).",

year = "2007",

doi = "10.1063/1.2714326",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

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T1 - Highly stable three-band white light from an InGaN-based blue light-emitting diode chip precoated with (oxy)nitride green/red phosphors

AU - Yang, Chih Chieh

AU - Lin, Chih Min

AU - Chen, Yi Jung

AU - Wu, Yi Tsuo

AU - Chuang, Shih Ren

AU - Liu, Ru Shi

AU - Hu, Shu Fen

N1 - Funding Information: The authors would like to thank the financial supports from the National Science Council of Taiwan (Contract Nos. NSC 94-2113-M-002-030 and NSC 95-2113-M-002-009) and the Economic Affair of Taiwan (Contract No. 95-EC-17-A-07-S1-043).

PY - 2007

Y1 - 2007

N2 - A three-band white light-emitting diode (LED) was fabricated using an InGaN-based blue LED chip that emits 455 nm blue light, and green phosphor Sr Si2 O2 N2: Eu and red phosphor CaSi N2: Ce that emit 538 nm green and 642 nm red emissions, respectively, when excited by the 455 nm blue light. The luminous efficacy of this white LED is about 30 lmW at a dc of 20 mA. With increasing dc from 5.0 to 60 mA, both the coordinates x and y of the white LED tend to be the same, and consequently the Tc is the same and the Ra increases to 92.2.

AB - A three-band white light-emitting diode (LED) was fabricated using an InGaN-based blue LED chip that emits 455 nm blue light, and green phosphor Sr Si2 O2 N2: Eu and red phosphor CaSi N2: Ce that emit 538 nm green and 642 nm red emissions, respectively, when excited by the 455 nm blue light. The luminous efficacy of this white LED is about 30 lmW at a dc of 20 mA. With increasing dc from 5.0 to 60 mA, both the coordinates x and y of the white LED tend to be the same, and consequently the Tc is the same and the Ra increases to 92.2.

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JF - Applied Physics Letters

IS - 12

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ER -

Highly stable three-band white light from an InGaN-based blue light-emitting diode chip precoated with (oxy)nitride green/red phosphors

Abstract

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