Four-Wavelengths-Mixed White Light Emitting Diodes with Dual-Wavelength-Pumped Green and Red Phosphors

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概要

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• 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 20 mA 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 20 mA.

• 2008-08-25

著者

• Lai Wei-chih

  Institute Of Electro-optical Science And Engineering National Cheng Kung University

• Chi Gou-chung

  Department Of Physics National Central University

• Kuo Cheng-huang

  Department Of Optics And Photonics National Central University

• Fu Yi-Keng

  Department of Optics and Photonics, National Central University, Jhongli, Taoyuan 32001, Taiwan

• Sheu Jinn-Kong

  Institute of Electro-Optical Science and Engineering and Advanced Optoelectronic Technology Center and Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan, Taiwan 701, Republic of China

• Sheu Jinn-Kong

  Institute of the Electro-Optical Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan

• Kuo Chi-Wen

  Department of Optics and Photonics, National Central University, Jhongli, Taoyuan 32001, Taiwan

• Tun Ching-Ju

  National Synchrotron Radiation Research Center, Hsinchu Science Park, Hsinchu 30076, Taiwan

• Pan Ching-Jen

  Optical Sciences Center, National Central University, Jhongli, Taoyuan 32001, Taiwan

• Kuo Cheng-Huang

  Department of Optics and Photonics, National Central University, Jhongli, Taoyuan 32001, Taiwan

• Lai Wei-Chih

  Institute of the Electro-Optical Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan

• Chi Gou-Chung

  Department of Optics and Photonics, National Central University, Jhongli, Taoyuan 32001, Taiwan

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