Abstract

Red, green, and blue phosphorescent resins were developed to realize full-color illuminators that shine without the need for electric power. Red phosphorescence, which used to be weak with conventional red phosphors, was enhanced notably with dye-doped resins in which green or blue phosphors were dispersed uniformly; i.e., brightness increased by seven times and afterglow duration extended by two times. Full-color phosphorescence from violet to red was attained by selecting suitable mixing ratios of the phosphors and dyes.

© 2007 Optical Society of America

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References

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  1. International Commission on Illumination (CIE), ed., Guide on the Emergency Lighting of Building Interiors (CIE, Wien, 1981).
  2. International Commission on Illumination (CIE), ed., Lighting of Outdoor Work Places - Lighting Requirements for Safety and Security (CIE, Wien, 2005).
  3. T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
    [CrossRef]
  4. M. Saito and H. Hashimoto, "Emergency illumination panel that displays different pictures depending on room brightness," Appl. Opt. 43, 3608-3613 (2004).
    [CrossRef] [PubMed]
  5. International Commission on Illumination (CIE), ed., Recommendation for Surface Colours for Visual Signalling (CIE, Wien, 1983).
  6. International Commission on Illumination (CIE), ed., Colours of Light Signals (CIE, Wien, 2001).
  7. M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
    [CrossRef]
  8. Sumita Optical Glass, Inc., "Functional Glass," http://www.sumita-opt.co.jp/en/functional.htm.
  9. Nichia Corporation, "Phosphors," http://www.nichia.co.jp/product/phosphors.html.
  10. Fukuoka Industry Science Technology Foundation, "Research Report" (in Japanese), http://www.ist.or.jp/homepage/kessyuu/morinaga/P4-fluor.htm.
  11. M. Saito and K. Yamamoto, "Bright afterglow illuminator made of phosphorescent material and fluorescent fibers," Appl. Opt. 39, 4366-4371 (2000).
    [CrossRef]
  12. M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).
  13. EZ Bright Corporation, "Products," http://www.ez-bright.co.jp/en/products/products.html.
  14. Nemoto & Co., Ltd., "LumiNova®," http://www.nemoto.co.jp/product_e.html.
  15. R. W. G. Hunt, The Reproduction of Colour (Wiley, 1967).
  16. Hayashibara Biochemical Labs., Inc., "Products Overview,"http://www.hayashibara-intl.com/industrial/industrial.html.
  17. http://www.hayashibara-intl.com/industrial/industrial.html.
  18. Maruto Instrument Co., Ltd., "Products" (in Japanese), http://www.maruto.com/detail.php?cat=5-01-01.
    [CrossRef]
  19. M. Saito and K. Kitagawa, "Axial and radial fluorescence of dye-doped polymer fiber," J. Lightwave Technol. 19, 982-987 (2001).
  20. J. T. Fulton, "Processes in Biological Vision," http://www.4colorvision.com/files/photopiceffic.htm.
  21. International Commission on Illumination (CIE), ed., Variable Message Signs (CIE, Wien, 1994).

2007 (1)

M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).

2004 (1)

2001 (1)

2000 (1)

1998 (1)

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

1996 (1)

T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
[CrossRef]

Aoki, Y.

T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
[CrossRef]

Hashimoto, H.

M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).

M. Saito and H. Hashimoto, "Emergency illumination panel that displays different pictures depending on room brightness," Appl. Opt. 43, 3608-3613 (2004).
[CrossRef] [PubMed]

Hosono, H.

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Kagomoto, K.

M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).

Kitagawa, K.

Kondo, H.

M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).

Matsuzawa, T.

T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
[CrossRef]

Mizuguchi, M.

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Murayama, Y.

T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
[CrossRef]

Nagahama, S.

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Saito, M.

Sawanobori, N.

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Takeuchi, N.

T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
[CrossRef]

Yamamoto, K.

M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).

M. Saito and K. Yamamoto, "Bright afterglow illuminator made of phosphorescent material and fluorescent fibers," Appl. Opt. 39, 4366-4371 (2000).
[CrossRef]

Yamamoto, Y.

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Yamazaki, M.

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Appl. Opt. (2)

IEEE Aerospace Electron. Sys. Mag. (1)

M. Saito, H. Kondo, K. Kagomoto, H. Hashimoto, and K. Yamamoto, "Bright phosphors for battery-independent emergency illuminations," IEEE Aerospace Electron. Sys. Mag. 22 (2007, to be published).

J. Electrochem. Soc. (1)

T. Matsuzawa, Y. Aoki, N. Takeuchi, and Y. Murayama, "A new long phosphorescent phosphor with high brightness, SrAl2O4:Eu2+, Dy3+," J. Electrochem. Soc. 143, 2670-2673 (1996).
[CrossRef]

J. Lightwave Technol. (1)

J. Non-Cryst. Solids (1)

M. Yamazaki, Y. Yamamoto, S. Nagahama, N. Sawanobori, M. Mizuguchi, and H. Hosono, "Long luminescent glass: Tb3+-activated ZnO-B2O-SiO2 glass," J. Non-Cryst. Solids,  214, 71-73 (1998).
[CrossRef]

Other (15)

Sumita Optical Glass, Inc., "Functional Glass," http://www.sumita-opt.co.jp/en/functional.htm.

Nichia Corporation, "Phosphors," http://www.nichia.co.jp/product/phosphors.html.

Fukuoka Industry Science Technology Foundation, "Research Report" (in Japanese), http://www.ist.or.jp/homepage/kessyuu/morinaga/P4-fluor.htm.

International Commission on Illumination (CIE), ed., Recommendation for Surface Colours for Visual Signalling (CIE, Wien, 1983).

International Commission on Illumination (CIE), ed., Colours of Light Signals (CIE, Wien, 2001).

International Commission on Illumination (CIE), ed., Guide on the Emergency Lighting of Building Interiors (CIE, Wien, 1981).

International Commission on Illumination (CIE), ed., Lighting of Outdoor Work Places - Lighting Requirements for Safety and Security (CIE, Wien, 2005).

EZ Bright Corporation, "Products," http://www.ez-bright.co.jp/en/products/products.html.

Nemoto & Co., Ltd., "LumiNova®," http://www.nemoto.co.jp/product_e.html.

R. W. G. Hunt, The Reproduction of Colour (Wiley, 1967).

Hayashibara Biochemical Labs., Inc., "Products Overview,"http://www.hayashibara-intl.com/industrial/industrial.html.

http://www.hayashibara-intl.com/industrial/industrial.html.

Maruto Instrument Co., Ltd., "Products" (in Japanese), http://www.maruto.com/detail.php?cat=5-01-01.
[CrossRef]

J. T. Fulton, "Processes in Biological Vision," http://www.4colorvision.com/files/photopiceffic.htm.

International Commission on Illumination (CIE), ed., Variable Message Signs (CIE, Wien, 1994).

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Figures (4)

Fig. 1.
Fig. 1.

(a) Emission spectra of violet, blue, green, and red phosphors. (b) Absorption (thick curves, left axis) and emission spectra (thin curves, right axis) of organic dyes (rhodamine 6G,rhodamine B, and kiton).

Fig. 2.
Fig. 2.

(a) Photographs of afterglowing resins. The lower right sample contained red phosphor (5 wt. %). The other samples contained green phosphor (5 wt. %) and an organic dye; i.e.,rhodamine 6G (0.5 mM), rhodamine B (1.5 mM), or kiton (1.5 mM). The samples were excited for 30 min in a dark room, and the photographs were taken 2 s or 2 min after stop of excitation.(b) Afterglow decay process of the samples shown in (a). The top curve shows data that were measured for the resin with green phosphor (5 wt. %). The horizontal axis shows time after stop of excitation. A blue phosphorescent lamp was used for excitation.

Fig. 3.
Fig. 3.

(a), (b) Photographs of afterglowing resins that contain green and blue phosphors. The resins also contain rhodamine 6G (0.05-5 mM) or kiton (0.025-2.5 mM). The resins were excited by a fluorescent lamp for 5 min in a dark room, and these photographs were taken 1-2 s after stop of excitation. (c), (d) Emission spectra of samples a-e and L-O.

Fig. 4.
Fig. 4.

Photographs of resins that contain phosphors and dyes. Photographs were taken in (a) a bright room or (b) a dark room (~5 s after stop of excitation).

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