The Deterioration of Blue Phosphor for Fluorescent Lamps

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概要

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• Tri-color type fluorescent lamps have been improved in their performance by various research efforts since the introduction to the market. In recent years, however, small size lamps have appeared and phosphors with superior resistance have been required under the severe conditions of these lamps. When compared with green phosphor and red phosphor, (Sr, Ba, Ca)_<10>(PO_4)_6Cl_2:Eu blue phosphor(SCA)is particularly easy to deteriorate. To investigate the causes of deterioration of SCA, we made serial experiments by the demountable discharge lamp apparatus(DDLA) and the fabrication of actual fluorescent lamps. It is noticed that ion bombardment and mercury absorption are related to the deterioration of SCA lamps. Surface coating is found to be effective to decrease the influence of both.

著者

• HAYASHI Kazushi

  Kobe Steel, Ltd., Electronics Research Laboratory

• HAYASHI Keiichiro

  Nichia Corporation

• WATANABE Mie

  Nichia Corporation

• TERAI Masayoshi

  Nichia Corporation

• ARAI Kiyotaka

  Nichia Corporation

• ICHINOMIYA Keiji

  Nichia Corporation

関連論文

• The Deterioration of Blue Phosphor for Fluorescent Lamps
• The Deterioration of Blue Phosphor for Fluorescent Lamps
• Measurement of Vacuum Ultraviolet Radiation with Diamond Photo Sensors
• Measurement of Vacuum Ultraviolet Radiation of Low-Pressure Mercury Lamps Using Photoconductors Made of Synthetic Diamond Films

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