Journal of The Society of Photographic Science and Technology of Japan
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
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Volume 76, Issue 6
Displaying 1-9 of 9 articles from this issue
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Special Topics: The Construction of Metal Nano-Structure toward Light Excitation Control
  • Towards Nanostructure-Enhanced Photoenergy Conversion in Plasmonic Chemical Reaction Fields
    Hiroaki Misawa
    2013 Volume 76 Issue 6 Pages 444-452
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.444
    JOURNAL FREE ACCESS
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    To produce high efficient photoenergy conversion systems, the concept of “effective utilization of photons” in photochemistry for an increase in excitation probability is very important. We have recently found that metallic nanostructures exhibiting localized plasmon resonance are promising in the photochemical reaction field, which make it possible to increase the interaction between photon and molecule. In this review, our recent research results concerning plasmon-assisted two photon induced photochemical reactions, plasmon-enhanced photoelectric conversion and artificial photosynthesis are introduced.
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  • Preparation and Properties of Metal Nanoparticles — from AgX Photography to Plasmonics —
    Tadaaki Tani
    2013 Volume 76 Issue 6 Pages 453-462
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.453
    JOURNAL FREE ACCESS
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    In AgX photography, nanoparticles of Ag and AgX are used for various purposes. Since Ag and AgX are face-centered cubic in crystal structure, the structure and preparation of metal nanoparticles with the same crystal structure could refer to those of Ag and AgX nanoparticles in photography. From this point of view, the knowledge on Ag and AgX nanoparticles that has ever been accumulated for many years in photographic science and technology is collected and analyzed to serve as references for the structure and preparation, light absorption, catalysis for redox reactions, photovoltaic effect on semiconductors, and stability of metal nanoparticles for plasmonics.
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  • Mechanisms of the Plasmon-Induced Charge Separation (PICS)
    Tetsu Tatsuma
    2013 Volume 76 Issue 6 Pages 463-468
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.463
    JOURNAL FREE ACCESS
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    Photoinduced charge separation based on localized surface plasmon resonance (i.e. plasmon-induced charge separation, PICS), proceeds at the interface between gold, silver, or copper nanoparticle and semiconductor such as TiO2. PICS, which is often confused with, but different from the metal co-catalyst effect and the plasmonic enhancement effect, is caused by electron injection from resonant plasmonic metal nanoparticle to a semiconductor. Applications of PICS include photovoltaic cells, photodiodes, photoconductive devices, photocatalysts, chemical sensors, surface patterning techniques, photochromic materials, holographic memories, and photoactuators.
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  • Development of the Near-Infrared Reflective Film Using Silver Nano Disk Particles
    Naoharu Kiyoto, Shinya Hakuta, Takeharu Tani, Kazutaka Chibana, Masayu ...
    2013 Volume 76 Issue 6 Pages 469-472
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.469
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    FUJIFILM Corporation has developed the near-infrared reflective film using silver nano disks. We estimated the best shape and arrangement of silver nano disks which reflect near-infrared rays by simulation. In order to form the silver nano disks, we applied the technology to form silver halide tabular grains used in photographic film. Further, we developed the coating technology to make uniform mono layer of silver nano disks that can reflect near-infrared rays effectively.
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  • Variation of Electrical Conductivity and Light Transmission / Reflection / Absorption of Thin Film Containing Silver Nano-Particles Layer, and Their Applications for Device
    Takayuki Uchida
    2013 Volume 76 Issue 6 Pages 473-480
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.473
    JOURNAL FREE ACCESS
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    In the case of the preparation of a thin film containing silver about 10 nm by electrodeposition or thermal evaporation and sandwiched between a transparent conductive film. The sandwiched films show various characteristics of transparency, electrically conductivity, color indication. In this study, <1> we evaluate the sandwiched Ag thin film, and more organic light emitting devices (OLEDs) were fabricated by using those film. <2> We also fabricated transparent electrochromic device with Ag ion. In the case of electrodeposition at voltage biased, the electrode of transparent conducting film indicates mirror, black state and more, red ~ blue color. The variation of color depended on the aggregation of Ag nanoparticles which was caused by applied voltage waveform or surface morphology of the TCF. <3> Furthermore, a novel devices combined between <1> and <2> were indicated. As a novel stacked device with 6 states was fabricated by the combination of “transparent OLED” and “transparent electrochromic device”.
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Exposition
Original Paper
  • Study on Long Term Stability of Developed Silver
    Yuki Teshima, Katsuhisa Ohzeki
    2013 Volume 76 Issue 6 Pages 487-492
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.487
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    Stability of silver images for long term preservation was studied. Density of silver image increased during aging test due to the change of the form of developed silver. It was found that stability of the developed silver depends mainly on the size and the shape of developed silver before aging. The life expectancy of silver image of appropriately designed B/W film was estimated for more than 1000 years by Arrenius method.
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  • Influence of Polyvalent Metal Dopants on the Frenkel Defects in Silver Halide Micro-Crystals
    Seiji Yamashita, Naoto Ohoshima, Shunji Takada
    2013 Volume 76 Issue 6 Pages 493-499
    Published: 2013
    Released on J-STAGE: December 16, 2014
    DOIhttps://doi.org/10.11454/photogrst.76.493
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    The silver halide micro-crystals reveal higher ionic conductivity than that of large crystals by a supply of interstitial silver ions from the crystal surface. Ionic conductivity of micro-crystals became similar to that of large crystals, when 1-phenyl-5-mercaptotetrazole was adsorbed on the surface of micro-crystals to suppress the supply of the silver ions. Using this technique, the ionic conductivity of silver bromide micro-crystals doped with Ir3+ ions or Pb2+ ions was investigated in a wide range and activation energy was measured. It was concluded that the association energy of Ir3+ ions with silver ion vacancies was smaller than that of Pb2+ ions and therefore silver ion vacancies dissociated more easily from Ir3+ ion centers than Pb2+ ion centers.
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