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Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays

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Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays. / Zhu, Haitao; Liu, Xuhai; Fu, Renli et al.
In: JOURNAL OF LUMINESCENCE, Vol. 211, 31.07.2019, p. 1-7.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Zhu, H, Liu, X, Fu, R, Shi, Y, Wang, H, He, Q & Song, X 2019, 'Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays', JOURNAL OF LUMINESCENCE, vol. 211, pp. 1-7. https://doi.org/10.1016/j.jlumin.2019.02.063

APA

Zhu, H., Liu, X., Fu, R., Shi, Y., Wang, H., He, Q., & Song, X. (2019). Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays. JOURNAL OF LUMINESCENCE, 211, 1-7. https://doi.org/10.1016/j.jlumin.2019.02.063

Vancouver

Zhu H, Liu X, Fu R, Shi Y, Wang H, He Q et al. Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays. JOURNAL OF LUMINESCENCE. 2019 Jul 31;211:1-7. Epub 2019 Mar 5. doi: 10.1016/j.jlumin.2019.02.063

Author

Zhu, Haitao ; Liu, Xuhai ; Fu, Renli et al. / Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays. In: JOURNAL OF LUMINESCENCE. 2019 ; Vol. 211. pp. 1-7.

Bibtex

@article{accf44eec51748c2bc2a583da5246331,
title = "Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays",
abstract = "Phosphor layer are essential in the application of phosphor-converted white light emitting diodes (pc-WLEDs). However, the conventional structure of red–green–blue (RGB) phosphor layers can cause severe re-absorption of blue light, resulting in low luminous efficiency and colour rendering index (CRI). In this paper, we fabricated a new WLEDs phosphor layer, which consisted of patterned RGB phosphor pixel arrays in a planar configuration, by the stencil printing technique. Optical simulation based on Monte-Carlo theory has been applied to assist designing the optimal pattern of the phosphor pixel arrays. By tuning the layout of the pixel arrays and the size of phosphor pixels, we achieved uniform output white light with high luminous intensity of 1.47 × 109 cd and CRI of 95.6, which are superior compared with the intensity of 1.11 × 109 cd and CRI of 93.5 obtained from WLEDs with conventional dispensing phosphor layer. Our newly-designed phosphor pixel-array layer possesses great potential for applications in advanced lighting and display devices with vast implications for industrial improvement in these research areas.",
keywords = "Phosphor layer, Stencil printing, Luminous intensity, White light emission, Pixel array",
author = "Haitao Zhu and Xuhai Liu and Renli Fu and Yahui Shi and He Wang and Qinjiang He and Xiufeng Song",
year = "2019",
month = jul,
day = "31",
doi = "10.1016/j.jlumin.2019.02.063",
language = "English",
volume = "211",
pages = "1--7",
journal = "JOURNAL OF LUMINESCENCE",
issn = "0022-2313",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Luminous efficiency enhancement of WLEDs via patterned RGB phosphor arrays

AU - Zhu, Haitao

AU - Liu, Xuhai

AU - Fu, Renli

AU - Shi, Yahui

AU - Wang, He

AU - He, Qinjiang

AU - Song, Xiufeng

PY - 2019/7/31

Y1 - 2019/7/31

N2 - Phosphor layer are essential in the application of phosphor-converted white light emitting diodes (pc-WLEDs). However, the conventional structure of red–green–blue (RGB) phosphor layers can cause severe re-absorption of blue light, resulting in low luminous efficiency and colour rendering index (CRI). In this paper, we fabricated a new WLEDs phosphor layer, which consisted of patterned RGB phosphor pixel arrays in a planar configuration, by the stencil printing technique. Optical simulation based on Monte-Carlo theory has been applied to assist designing the optimal pattern of the phosphor pixel arrays. By tuning the layout of the pixel arrays and the size of phosphor pixels, we achieved uniform output white light with high luminous intensity of 1.47 × 109 cd and CRI of 95.6, which are superior compared with the intensity of 1.11 × 109 cd and CRI of 93.5 obtained from WLEDs with conventional dispensing phosphor layer. Our newly-designed phosphor pixel-array layer possesses great potential for applications in advanced lighting and display devices with vast implications for industrial improvement in these research areas.

AB - Phosphor layer are essential in the application of phosphor-converted white light emitting diodes (pc-WLEDs). However, the conventional structure of red–green–blue (RGB) phosphor layers can cause severe re-absorption of blue light, resulting in low luminous efficiency and colour rendering index (CRI). In this paper, we fabricated a new WLEDs phosphor layer, which consisted of patterned RGB phosphor pixel arrays in a planar configuration, by the stencil printing technique. Optical simulation based on Monte-Carlo theory has been applied to assist designing the optimal pattern of the phosphor pixel arrays. By tuning the layout of the pixel arrays and the size of phosphor pixels, we achieved uniform output white light with high luminous intensity of 1.47 × 109 cd and CRI of 95.6, which are superior compared with the intensity of 1.11 × 109 cd and CRI of 93.5 obtained from WLEDs with conventional dispensing phosphor layer. Our newly-designed phosphor pixel-array layer possesses great potential for applications in advanced lighting and display devices with vast implications for industrial improvement in these research areas.

KW - Phosphor layer

KW - Stencil printing

KW - Luminous intensity

KW - White light emission

KW - Pixel array

U2 - 10.1016/j.jlumin.2019.02.063

DO - 10.1016/j.jlumin.2019.02.063

M3 - Journal article

VL - 211

SP - 1

EP - 7

JO - JOURNAL OF LUMINESCENCE

JF - JOURNAL OF LUMINESCENCE

SN - 0022-2313

ER -