Abstract

Phosphor-in-glass (PiG) when used in combination with a blue light emitting diode (LED) chip in a remote phosphor configuration offers precise tuning and yields higher luminous efficiencies at elevated temperatures, compared to the conventional conformal LED packaging. However, drawbacks such as spectral overlapping of the constituent phosphors and resultant reabsorption remain unresolved in multi phosphor color conversion plates. These issues were solved up to a desired extent by arranging different color-emitting PiGs, via cutting and reassembly. However, the interface of the multicolored plates acted as a dissipative layer. In this work, a novel fabrication technique was proposed to overcome this drawback by eliminating the interfacial layer through a one-step process. PiGs were fabricated using glass frits at a low softening temperature of 600 °C. As a result, a higher efficacy of the studied prototypes, i.e., a horizontal 2-layered PiG and a 4-quadrant PiG, was obtained as compared with their counterparts. The angular dependency of the luminescence of the segmented 4-quadrant type PiG was studied, and the results were discussed.

© 2016 Optical Society of America

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References

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2015 (3)

J. Zhou and Z. Xia, “Luminescence color tuning of Ce3+, Tb3+ and Eu3+ codoped and tri-doped BaY2Si3O10 phosphors via energy transfer,” J. Mater. Chem. C Mater. Opt. Electron. Devices 29, 7552–7560 (2015).

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

L.-Y. Chen, J.-K. Chang, W.-C. Cheng, J.-C. Huang, Y.-C. Huang, and W.-H. Cheng, “Chromaticity tailorable glass-based phosphor-converted white light-emitting diodes with high color rendering index,” Opt. Express 23(15), A1024–A1029 (2015).
[Crossref] [PubMed]

2014 (6)

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

J. S. Lee, P. Arunkumar, S. Kim, I. J. Lee, H. Lee, and W. B. Im, “Smart design to resolve spectral overlapping of phosphor-in-glass for high-powered remote-type white light-emitting devices,” Opt. Lett. 39(4), 762–765 (2014).
[Crossref] [PubMed]

L.-Y. Chen, W.-C. Cheng, C.-C. Tsai, J.-K. Chang, Y.-C. Huang, J.-C. Huang, and W.-H. Cheng, “Novel broadband glass phosphors for high CRI WLEDs,” Opt. Express 22(S3), A671–A678 (2014).
[Crossref] [PubMed]

C. Kim, H.-A. Park, H. W. Jang, W. J. Chung, and S. Y. Kim, “All-in-one-type organic light-emitting diodes for color tuning using phosphor in glasses with Pb-free silicate powders,” Curr. Appl. Phys. 14(12), 1677–1681 (2014).
[Crossref]

Y. K. Lee, Y. H. Kim, J. Heo, W. B. Im, and W. J. Chung, “Control of chromaticity by phosphor in glasses with low temperature sintered silicate glasses for LED applications,” Opt. Lett. 39(14), 4084–4087 (2014).
[Crossref] [PubMed]

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

2013 (2)

J. S. Lee, S. Unithrattil, S. Kim, I. J. Lee, H. Lee, and W. B. Im, “Robust moisture and thermally stable phosphor glass plate for highly unstable sulfide phosphors in high-power white light-emitting diodes,” Opt. Lett. 38(17), 3298–3300 (2013).
[Crossref] [PubMed]

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

2012 (2)

2011 (1)

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

2010 (1)

2008 (1)

S. C. Allen and A. J. Steckl, “A nearly ideal phosphor-converted white light-emitting diode,” Appl. Phys. Lett. 92, 143309 (2008).

2005 (1)

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Allen, S. C.

S. C. Allen and A. J. Steckl, “A nearly ideal phosphor-converted white light-emitting diode,” Appl. Phys. Lett. 92, 143309 (2008).

Arunkumar, P.

Brinkley, S.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Chang, J.-K.

Chen, C.

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

Chen, H.

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

Chen, L.-Y.

Cheng, W.-C.

Cheng, W.-H.

Chmelka, B. F.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Cho, J.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Chung, W. J.

DenBaars, S. P.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Feng, Y.

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

George, N.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Han, G. S.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Heo, J.

Hu, J.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Huang, J.-C.

Huang, Y.-C.

Im, W. B.

Jang, H. W.

C. Kim, H.-A. Park, H. W. Jang, W. J. Chung, and S. Y. Kim, “All-in-one-type organic light-emitting diodes for color tuning using phosphor in glasses with Pb-free silicate powders,” Curr. Appl. Phys. 14(12), 1677–1681 (2014).
[Crossref]

Jeong, B. W.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Ji, E. K.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Jung, H. S.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Jung, M. K.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Kim, C.

C. Kim, H.-A. Park, H. W. Jang, W. J. Chung, and S. Y. Kim, “All-in-one-type organic light-emitting diodes for color tuning using phosphor in glasses with Pb-free silicate powders,” Curr. Appl. Phys. 14(12), 1677–1681 (2014).
[Crossref]

Kim, J. K.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Kim, S.

Kim, S. Y.

C. Kim, H.-A. Park, H. W. Jang, W. J. Chung, and S. Y. Kim, “All-in-one-type organic light-emitting diodes for color tuning using phosphor in glasses with Pb-free silicate powders,” Curr. Appl. Phys. 14(12), 1677–1681 (2014).
[Crossref]

Kim, Y. H.

Kurzman, J.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Lee, H.

Lee, I. J.

Lee, J. S.

Lee, M.-J.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Lee, Y. K.

Lei, Q.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Liao, J.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Lin, H.

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

Liu, S.

Liu, Z.

Luo, H.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Luo, X.

Mikhailovsky, A.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Ni, Y.

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

Park, H.-A.

C. Kim, H.-A. Park, H. W. Jang, W. J. Chung, and S. Y. Kim, “All-in-one-type organic light-emitting diodes for color tuning using phosphor in glasses with Pb-free silicate powders,” Curr. Appl. Phys. 14(12), 1677–1681 (2014).
[Crossref]

Park, Y.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Rao, H.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Schubert, E. F.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Seshadri, R.

W. B. Im, N. George, J. Kurzman, S. Brinkley, A. Mikhailovsky, J. Hu, B. F. Chmelka, S. P. DenBaars, and R. Seshadri, “Efficient and Color-Tunable Oxyfluoride Solid Solution Phosphors for Solid-State White Lighting,” Adv. Mater. 23(20), 2300–2305 (2011).
[Crossref] [PubMed]

Shani, Y.

Y. Shani, “Fundamentals of Planar Remote Phosphor LEDs,” Luger Research e.U. 29, 34–37 (2012).

Sone, C.

J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup,” Jpn. J. Appl. Phys. 44(21), L649–L651 (2005).
[Crossref]

Song, Y. H.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Song, Y. L.

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Steckl, A. J.

S. C. Allen and A. J. Steckl, “A nearly ideal phosphor-converted white light-emitting diode,” Appl. Phys. Lett. 92, 143309 (2008).

Tsai, C.-C.

Unithrattil, S.

Wan, X.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Wang, B.

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

Wang, K.

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

Z. Liu, S. Liu, K. Wang, and X. Luo, “Measurement and numerical studies of optical properties of YAG:Ce phosphor for white light-emitting diode packaging,” Appl. Opt. 49(2), 247–257 (2010).
[Crossref] [PubMed]

Wang, W.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Wang, X.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Wang, Y.

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

Xia, Z.

J. Zhou and Z. Xia, “Luminescence color tuning of Ce3+, Tb3+ and Eu3+ codoped and tri-doped BaY2Si3O10 phosphors via energy transfer,” J. Mater. Chem. C Mater. Opt. Electron. Devices 29, 7552–7560 (2015).

Xu, J.

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

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X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

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Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

Yu, Y.

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

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H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

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H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Zhou, J.

J. Zhou and Z. Xia, “Luminescence color tuning of Ce3+, Tb3+ and Eu3+ codoped and tri-doped BaY2Si3O10 phosphors via energy transfer,” J. Mater. Chem. C Mater. Opt. Electron. Devices 29, 7552–7560 (2015).

Zhou, L.

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

Zhou, S.

X. Yi, S. Zhou, C. Chen, H. Lin, Y. Feng, K. Wang, and Y. Ni, “Fabrication of Ce:YAG, Ce,Cr:YAG and Ce:YAG/Ce,Cr:YAG dual-layered composite phosphor ceramics for the application of white LEDs,” Ceram. Int. 40(5), 7043–7047 (2014).
[Crossref]

ACS Appl. Mater. Interfaces (1)

H. Lin, B. Wang, J. Xu, R. Zhang, H. Chen, Y. Yu, and Y. Wang, “Phosphor-in-glass for high-powered remote-type white AC-LED,” ACS Appl. Mater. Interfaces 6(23), 21264–21269 (2014).
[Crossref] [PubMed]

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[Crossref]

Curr. Appl. Phys. (1)

C. Kim, H.-A. Park, H. W. Jang, W. J. Chung, and S. Y. Kim, “All-in-one-type organic light-emitting diodes for color tuning using phosphor in glasses with Pb-free silicate powders,” Curr. Appl. Phys. 14(12), 1677–1681 (2014).
[Crossref]

J. Disp. Technol. (1)

H. Rao, W. Wang, X. Wan, L. Zhou, J. Liao, D. Zhou, Q. Lei, and X. Wang, “An improved slurry method of self-adaptive phosphor coating for white pc-LED packaging,” J. Disp. Technol. 9(6), 453–458 (2013).
[Crossref]

J. Mater. Chem. C Mater. Opt. Electron. Devices (2)

Y. H. Song, G. S. Han, E. K. Ji, M.-J. Lee, Y. L. Song, M. K. Jung, B. W. Jeong, H. S. Jung, and D.-H. Yoon, “The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(24), 6148–6152 (2015).
[Crossref]

J. Zhou and Z. Xia, “Luminescence color tuning of Ce3+, Tb3+ and Eu3+ codoped and tri-doped BaY2Si3O10 phosphors via energy transfer,” J. Mater. Chem. C Mater. Opt. Electron. Devices 29, 7552–7560 (2015).

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Figures (7)

Fig. 1
Fig. 1 Schematic one-step design and (a) fabrication of a horizontal 2-piece PiG and (b) lengthwise slicing into four quadrants consisting of green LuAG:Ce3+ and red CASN:Eu2+.
Fig. 2
Fig. 2 Schematic diagram of the remote phosphor configuration in (a) lateral and (b) top view displaying the arrangement of the blue LED chips.
Fig. 3
Fig. 3 Schematic configuration of the (a) stacked double-layer PiG, (b) one-step double-layer PiG, (c) diced 4-quadrant PiG joined together with a substrate, and (d) one-step 4-quadrant type PiG mounted on a remote-type configuration.
Fig. 4
Fig. 4 (a) SEM image of the PiG, (b) energy dispersive spectra of points S1, S2, and S3, which correspond to the CASN:Eu2+, LuAG:Ce3+, and glass matrix, respectively. (c) XRD pattern of the PiG along with the reference patterns of the component phosphors; the inset of (a) shows the boundary image of the one-step double-layer PiG.
Fig. 5
Fig. 5 (a) An actual image of the one-step fabricated PiG, (b) electroluminescence spectra of the four configurations of the PiG-LED system, under operating conditions of 350 mA and 20 V, and (c) the CIE-1931 chromaticity coordinates of the corresponding WLED system.
Fig. 6
Fig. 6 Azimuthal and polar angles gradated on the 4-segmented PiG illustrating the angle dependent luminescence measurement.
Fig. 7
Fig. 7 (a) Digital photograph of a one-step fabricated 4-quadrant PiG with labeled azimuthal angles. Polar plots of the relative intensities of red, green, and blue component colors at polar angles of (b) 30°, (c) 45°, and (d) 60°.

Tables (1)

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Table 1 Electroluminescence data of the 2-layered and 4-quadrant PiGs, prepared via two different processes.

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