Luminescence Characteristics of Modulated White Light Emitting Diode

4 References
  • IZUHARA Noboru
    Department of Opto-Mechatronics, Faculty of Systems Engineering, Wakayama University
  • SHIINA Tatsuo
    Department of Opto-Mechatronics, Faculty of Systems Engineering, Wakayama University
  • ITO Masafumi
    Department of Opto-Mechatronics, Faculty of Systems Engineering, Wakayama University
  • OKAMURA Yasuyuki
    Department of Opto-Mechatronics, Faculty of Systems Engineering, Wakayama University

Bibliographic Information

Other Title
  • 変調した白色発光ダイオードの発光特性

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Description

When a white light emitting diode(LED) is modulated, there is a time lag between the blue and the yellow light. This study revealed the luminescence characteristics of the modulated white-LED and the change of its spectrum. The white-LED was modulated with pulse, trigger, ramp, and sinusoidal waves. When a pulse width was 500ns, the blue, the white, and the yellow lights appeared sequentially. When a pulse width was 60ns, the white, the yellow lights appeared sequentially. In addition, the blue, the yellow, and the white appeared well by trigger, ramp, sinusoidal wave modulations, respectively. We found that the white-LED can change the luminescence ratio of the blue to the yellow with the modulation frequencies and its shape.

Journal

  • Technical report of IEICE. PS

    Technical report of IEICE. PS 100 (586), 37-42, 2001-01-18

    The Institute of Electronics, Information and Communication Engineers

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Keywords

Details 詳細情報について

  • CRID
    1574231877127644672
  • NII Article ID
    110003182918
  • NII Book ID
    AA1123312X
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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