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首页> 外文期刊>Applied Physics >Effect of charge compensator ions (R~+ = Li~+, Na~+ and K~+) on Sr_2MgSi_2O_7:Dy~(3+) phosphors by solid-state reaction method
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Effect of charge compensator ions (R~+ = Li~+, Na~+ and K~+) on Sr_2MgSi_2O_7:Dy~(3+) phosphors by solid-state reaction method

机译：固态反应法电荷补偿离子（R〜+ = Li〜+，Na〜+和K〜+）对Sr_2MgSi_2O_7：Dy〜（3+）荧光粉的影响

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摘要

The Sr_2MgSi_2O_7:Dy~(3+) and Sr_2MgSi_2O_7:Dy~(3+), R~+ (R~+ = Li~+, Na~+ and K~+) phosphors were prepared by solid-state reaction method. The crystal structures of sintered phosphors were an akermanite-type structure which belongs to the tetragonal crystallography. The prepared phosphors were excited at 350 nm, and their corresponding emission spectrum were recorded at blue (482 nm) and yellow (575 nm) region due to the ~4F_(9/2) → ~6H_(15/2) and ~4F_(9/2) → ~6H_(13/2) transitions, respectively, of Dy~(3+) ions. Commission Internationale de L'Eclairage coordinates have been calculated for each sample and its value exhibited that overall emission is near white light. The possible mechanisms of discussed white light emitting phosphors were also investigated. In order to investigate the suitability of the samples as white color light sources for industrial uses, color purity, correlated color temperature (CCT) and color rendering index (CRI) were calculated. Values of color purity, CCT and CRI were found well within the denned acceptable range. With incorporating (R~+ = Li~+, Na~+ and K~+) as charge compensator ions, the emission intensity of Sr_2MgSi_2O_7:Dy~(3+) can be obviously enhanced. The results indicate that prepared phosphors may be a potential application in display devices.
机译：通过固相反应法制备了Sr_2MgSi_2O_7：Dy〜（3+）和Sr_2MgSi_2O_7：Dy〜（3 +），R〜+（R〜+ = Li〜+，Na〜+和K〜+）荧光粉。烧结的荧光体的晶体结构是钙钛矿型结构，属于四方晶体学。制备的荧光粉在350 nm处激发，并且由于〜4F_（9/2）→〜6H_（15/2）和〜4F_，在蓝色（482 nm）和黄色（575 nm）区域记录了它们相应的发射光谱。 Dy〜（3+）离子的（9/2）→〜6H_（13/2）跃迁。已经为每个样品计算了国际照明委员会的坐标，其值表明总体发射接近白光。还研究了讨论的发射白光的磷光体的可能机理。为了研究样品是否适合作为工业用途的白色光源，计算了色纯度，相关色温（CCT）和显色指数（CRI）。发现颜色纯度，CCT和CRI的值很好地在所定义的可接受范围内。通过掺入（R〜+ = Li〜+，Na〜+和K〜+）作为电荷补偿离子，可以明显提高Sr_2MgSi_2O_7：Dy〜（3+）的发射强度。结果表明，制备的磷光体可能是显示设备中的潜在应用。

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  • 来源
    《Applied Physics》 |2016年第9期|855.1-855.11|共11页
  • 作者

    Ishwar Prasad Sahu;

  • 作者单位

    School of Studies in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh 492010, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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