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首页> 外文期刊>Materials Science and Engineering >Tuning the diurnal natural daylight with phosphor converted white LED - Advent of new phosphor blend composition
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Tuning the diurnal natural daylight with phosphor converted white LED - Advent of new phosphor blend composition

机译：用磷光体转换的白光LED调节昼夜自然光-新型磷光体混合物的出现

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摘要

We demonstrate the feasibility of developing phosphor converted white LED (pc-WLED) that mimics diurnal natural daylight with the newly designed phosphor blend in the color temperature (CCT) 2700-6000 K for health benefits. Natural daylight (sunlight) spectrum possesses broad emission in the visible region and closely approximates black body radiator, with color rendition index (CRI) of 100 under wide CCT (2500-6500 K). Current white light LEDs although are efficient and durable, they are not broad enough compared to daylight. We report new phosphor blend based on Sr_3MgSi_2O_8:Eu~(2+) blue phosphor with broad emission and high CRI ≥ 96 under both near UV and blue excitation. The fabricated WLED has exhibited ～91% spectral resemblance with natural daylight compared to 39.2% for YAG:Ce~(3+) white LED at 4500 K. The developed phosphor blend tunes the spectrum in wider CCT and would be a prospective candidate for full spectrum daylight WLED.
机译：我们展示了开发新的磷光体转换白光LED（pc-WLED）的可行性，该白光LED与色温（CCT）2700-6000 K的新设计的磷光体混合物可以模拟日间自然光，从而有益于健康。自然日光（日光）光谱在可见光区域内具有宽泛的发射，并且非常接近黑体辐射体，在宽的CCT（2500-6500 K）下，颜色再现指数（CRI）为100。当前的白光LED尽管高效且耐用，但是与日光相比还不够宽。我们报道了基于Sr_3MgSi_2O_8：Eu〜（2+）蓝色荧光粉的新型荧光粉混合物，该荧光粉在近紫外和蓝色激发下均具有宽发射和高CRI≥96。制成的WLED在自然光下具有约91％的光谱相似性，而在4500 K时，YAG：Ce〜（3+）白光LED的光谱相似度为39.2％。开发的荧光粉混合物可在更宽的CCT中调节光谱，将是满量程的潜在候选者光谱日光WLED。

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  • 来源
    《Materials Science and Engineering》 |2015年第3期|4-12|共9页
  • 作者

    Yoon Hwa Kim; Paulraj Arunkumar; Seung Hyok Park; Ho Shin Yoon; Won Bin Im;

  • 作者单位

    School of Materials Science and Engineering, Chonnam National University, 300, Yongbong-dong, Buk-gu, Gwangju 500-757, South Korea,Research Institute, Force4 Corp., Daechon-dong, Buk-gu, Gwangju 500-470, South Korea;

    School of Materials Science and Engineering, Chonnam National University, 300, Yongbong-dong, Buk-gu, Gwangju 500-757, South Korea;

    Research Institute, Force4 Corp., Daechon-dong, Buk-gu, Gwangju 500-470, South Korea;

    Research Institute, Force4 Corp., Daechon-dong, Buk-gu, Gwangju 500-470, South Korea;

    School of Materials Science and Engineering, Chonnam National University, 300, Yongbong-dong, Buk-gu, Gwangju 500-757, South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Natural daylight; Phosphor blend; Full spectrum;

    机译：自然采光;磷共混物;全谱;

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