Four-wavelengths-mixed white light emitting diodes with dual-wavelength-pumped green and red phosphors

Wei Chih Lai; Jinn Kong Sheu; Yi Keng Fu; Cheng-Huang Kuo; Chi Wen Kuo; Ching Ju Tun; Ching Jen Pan; Gou Chung Chi

doi:10.1143/JJAP.47.6317

Four-wavelengths-mixed white light emitting diodes with dual-wavelength-pumped green and red phosphors

Wei Chih Lai^*, Jinn Kong Sheu, Yi Keng Fu, Cheng-Huang Kuo, Chi Wen Kuo, Ching Ju Tun, Ching Jen Pan, Gou Chung Chi

^*Corresponding author for this work

Institute of Lighting and Energy Photonics

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

Abstract

The wavelengths of dual-wavelength light-emitting diodes (LEDs) are near ultraviolet (UV) at approximately 409 and 459 nm for blue when driven at 20 mA. The near-UV emission intensity of LEDs is stronger than the blue emission intensity with a 20 mA driven current. The green and red emission intensities of the phosphor are almost the same as, but less than, the blue emission intensity of the dual-wavelength LED with a 20mA driven current. The CIE color coordinates are x = 0.32 and y = 0.35, while the dual-wavelength LED with a green and red phosphor LED lamp is driven at 20mA.

Original language	English
Pages (from-to)	6317-6319
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	47
Issue number	8 PART 1
DOIs	https://doi.org/10.1143/JJAP.47.6317
State	Published - 8 Aug 2008

Keywords

Dual-wavelength LED
Green and red phosphors

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10.1143/JJAP.47.6317

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title = "Four-wavelengths-mixed white light emitting diodes with dual-wavelength-pumped green and red phosphors",

abstract = "The wavelengths of dual-wavelength light-emitting diodes (LEDs) are near ultraviolet (UV) at approximately 409 and 459 nm for blue when driven at 20 mA. The near-UV emission intensity of LEDs is stronger than the blue emission intensity with a 20 mA driven current. The green and red emission intensities of the phosphor are almost the same as, but less than, the blue emission intensity of the dual-wavelength LED with a 20mA driven current. The CIE color coordinates are x = 0.32 and y = 0.35, while the dual-wavelength LED with a green and red phosphor LED lamp is driven at 20mA.",

keywords = "Dual-wavelength LED, Green and red phosphors",

author = "Lai, {Wei Chih} and Sheu, {Jinn Kong} and Fu, {Yi Keng} and Cheng-Huang Kuo and Kuo, {Chi Wen} and Tun, {Ching Ju} and Pan, {Ching Jen} and Chi, {Gou Chung}",

year = "2008",

month = aug,

day = "8",

doi = "10.1143/JJAP.47.6317",

language = "English",

volume = "47",

pages = "6317--6319",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "8 PART 1",

}

Four-wavelengths-mixed white light emitting diodes with dual-wavelength-pumped green and red phosphors. / Lai, Wei Chih; Sheu, Jinn Kong; Fu, Yi Keng et al.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 47, No. 8 PART 1, 08.08.2008, p. 6317-6319.

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

TY - JOUR

T1 - Four-wavelengths-mixed white light emitting diodes with dual-wavelength-pumped green and red phosphors

AU - Lai, Wei Chih

AU - Sheu, Jinn Kong

AU - Fu, Yi Keng

AU - Kuo, Cheng-Huang

AU - Kuo, Chi Wen

AU - Tun, Ching Ju

AU - Pan, Ching Jen

AU - Chi, Gou Chung

PY - 2008/8/8

Y1 - 2008/8/8

N2 - The wavelengths of dual-wavelength light-emitting diodes (LEDs) are near ultraviolet (UV) at approximately 409 and 459 nm for blue when driven at 20 mA. The near-UV emission intensity of LEDs is stronger than the blue emission intensity with a 20 mA driven current. The green and red emission intensities of the phosphor are almost the same as, but less than, the blue emission intensity of the dual-wavelength LED with a 20mA driven current. The CIE color coordinates are x = 0.32 and y = 0.35, while the dual-wavelength LED with a green and red phosphor LED lamp is driven at 20mA.

AB - The wavelengths of dual-wavelength light-emitting diodes (LEDs) are near ultraviolet (UV) at approximately 409 and 459 nm for blue when driven at 20 mA. The near-UV emission intensity of LEDs is stronger than the blue emission intensity with a 20 mA driven current. The green and red emission intensities of the phosphor are almost the same as, but less than, the blue emission intensity of the dual-wavelength LED with a 20mA driven current. The CIE color coordinates are x = 0.32 and y = 0.35, while the dual-wavelength LED with a green and red phosphor LED lamp is driven at 20mA.

KW - Dual-wavelength LED

KW - Green and red phosphors

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U2 - 10.1143/JJAP.47.6317

DO - 10.1143/JJAP.47.6317

M3 - Article

AN - SCOPUS:55149126053

SN - 0021-4922

VL - 47

SP - 6317

EP - 6319

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

IS - 8 PART 1

ER -

Four-wavelengths-mixed white light emitting diodes with dual-wavelength-pumped green and red phosphors

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Keywords

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