Abstract

This study introduces an efficient polarized, white phosphor-converted, light-emitting diode (pc-LED) using a remote phosphor film sandwiched between a reflective polarizer film (RPF) and a short-wavelength pass dichroic filter (SPDF). The on-axis brightness of polarized white light emission of a RPF/SPDF-sandwiched phosphor film over a blue LED, showed greater recovery than that of a conventional unpolarized remote phosphor film over blue LED, due to the recycling effect of yellow light from an SPDF. The relative luminous efficacy of an RPF/SPDF-sandwiched phosphor film was made 1.40 times better by adding an SPDF on the backside of an RPF-capped phosphor film. A polarization ratio of 0.84 was demonstrated for a white LED with an RPF/SPDF-sandwiched phosphor film, in good agreement with the measured results from the RPF-only sample.

©2013 Optical Society of America

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  1. J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
    [Crossref]
  2. J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
    [Crossref]
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    [Crossref]
  6. T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
    [Crossref]
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    [Crossref]
  8. M. F. Schubert, A. Noemaun, S. Chhajed, J. K. Kim, E. F. Schubert, and C. Sone, “Encapsulation shape with non-rotational symmetry designed for extraction of polarized light from unpolarized sources,” Opt. Express 15(16), 10452–10457 (2007).
    [Crossref] [PubMed]
  9. M. F. Schubert, S. Chhajed, J. K. Kim, E. F. Schubert, and J. Cho, “Linearly polarized emission from GaInN light-emitting diodes with polarization-enhancing reflector,” Opt. Express 15(18), 11213–11218 (2007).
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    [Crossref]
  11. Z. Ge and S.-T. Wu, “Nanowire grid polarizer for energy efficient and wide-view liquid crystal displays,” Appl. Phys. Lett. 93(12), 121104 (2008).
    [Crossref]
  12. T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
    [Crossref]
  13. J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
    [Crossref] [PubMed]
  14. J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
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2010 (1)

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
[Crossref]

2009 (2)

2008 (2)

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Z. Ge and S.-T. Wu, “Nanowire grid polarizer for energy efficient and wide-view liquid crystal displays,” Appl. Phys. Lett. 93(12), 121104 (2008).
[Crossref]

2007 (2)

2006 (2)

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

S. H. Kim, J.-D. Park, and K.-D. Lee, “Fabrication of a nano-wire grid polarizer for brightness enhancement in liquid crystal display,” Nanotechnology 17(17), 4436–4438 (2006).
[Crossref]

2005 (3)

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
[Crossref]

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

2004 (1)

2003 (1)

J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
[Crossref]

Baba, J. S.

J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
[Crossref]

Baker, T. J.

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Chakraborty, A.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Chao, C.-H.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Chhajed, S.

Chi, J.-Y.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Chichibu, S. F.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Chien, K.-W.

Cho, J.

Cho, S.-H.

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
[Crossref]

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
[Crossref] [PubMed]

Denbaars, S. P.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Do, Y. R.

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
[Crossref]

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
[Crossref] [PubMed]

Farrell, R. M.

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Fuchs, H.-J.

T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
[Crossref]

Gardner, N. F.

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

Ge, Z.

Z. Ge and S.-T. Wu, “Nanowire grid polarizer for energy efficient and wide-view liquid crystal displays,” Appl. Phys. Lett. 93(12), 121104 (2008).
[Crossref]

Gleason, S. S.

J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
[Crossref]

Goddard, J. S.

J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
[Crossref]

Haskell, B. A.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Hsueh, H.-T.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Huang, C.-Y.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Jacques, S. L.

J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
[Crossref]

Keller, S.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Kim, J. C.

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

Kim, J. K.

Kim, S. H.

S. H. Kim, J.-D. Park, and K.-D. Lee, “Fabrication of a nano-wire grid polarizer for brightness enhancement in liquid crystal display,” Nanotechnology 17(17), 4436–4438 (2006).
[Crossref]

Kley, E.-B.

T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
[Crossref]

Koyama, T.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Krames, M. R.

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

Kuo, H.-C.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Lai, C.-F.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Lee, K.

J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
[Crossref]

Lee, K.-D.

S. H. Kim, J.-D. Park, and K.-D. Lee, “Fabrication of a nano-wire grid polarizer for brightness enhancement in liquid crystal display,” Nanotechnology 17(17), 4436–4438 (2006).
[Crossref]

Lee, Y.-H.

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
[Crossref]

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
[Crossref] [PubMed]

Masui, H.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Mishra, U. K.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Nakamura, S.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Noemaun, A.

Oh, J. R.

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
[Crossref]

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
[Crossref] [PubMed]

Onuma, T.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Park, J.-D.

S. H. Kim, J.-D. Park, and K.-D. Lee, “Fabrication of a nano-wire grid polarizer for brightness enhancement in liquid crystal display,” Nanotechnology 17(17), 4436–4438 (2006).
[Crossref]

Pattison, P. M.

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Paulus, M. J.

J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
[Crossref]

Prahl, S. A.

J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
[Crossref]

Ramella-Roman, J. C.

J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
[Crossref]

Schmidt, H.

T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
[Crossref]

Schubert, E. F.

Schubert, M. F.

Sharma, R.

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Shen, Y. C.

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

Shieh, H.-P. D.

Sone, C.

Sota, T.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

Speck, J. S.

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Tünnermann, A.

T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
[Crossref]

Wang, J.-F. T.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Weber, T.

T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
[Crossref]

Wierer, J. J.

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

Wu, F.

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Wu, S.-T.

Z. Ge and S.-T. Wu, “Nanowire grid polarizer for energy efficient and wide-view liquid crystal displays,” Appl. Phys. Lett. 93(12), 121104 (2008).
[Crossref]

Yeh, W.-Y.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Yen, H.-H.

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Appl. Opt. (1)

Appl. Phys. Lett. (5)

C.-F. Lai, J.-Y. Chi, H.-H. Yen, H.-C. Kuo, C.-H. Chao, H.-T. Hsueh, J.-F. T. Wang, C.-Y. Huang, and W.-Y. Yeh, “Polarized light emission from photonic crystal light-emitting diodes,” Appl. Phys. Lett. 92(24), 243118 (2008).
[Crossref]

Z. Ge and S.-T. Wu, “Nanowire grid polarizer for energy efficient and wide-view liquid crystal displays,” Appl. Phys. Lett. 93(12), 121104 (2008).
[Crossref]

N. F. Gardner, J. C. Kim, J. J. Wierer, Y. C. Shen, and M. R. Krames, “Polarization anisotropy in the electroluminescence of m-plane InGaN-GaN multiple-quantum-well light-emitting diodes,” Appl. Phys. Lett. 86(11), 111101 (2005).
[Crossref]

T. Koyama, T. Onuma, H. Masui, A. Chakraborty, B. A. Haskell, S. Keller, U. K. Mishra, J. S. Speck, S. Nakamura, S. P. Denbaars, T. Sota, and S. F. Chichibu, “Prospective emission efficiency and in-plane light polarization of nonpolar m-plane InxGa1-xN/GaN blue light emitting diodes fabricated on freestanding GaN substrates,” Appl. Phys. Lett. 89(9), 091906 (2006).
[Crossref]

R. Sharma, P. M. Pattison, H. Masui, R. M. Farrell, T. J. Baker, B. A. Haskell, F. Wu, S. P. DenBaars, J. S. Speck, and S. Nakamura, “Demonstration of a semipolar (1013) InGaN∕GaN green light emitting diode, ” Appl. Phys. Lett. 87(23), 231110 (2005).
[Crossref]

Electrochem. Solid-State Lett. (1)

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Lowering color temperature of Y3Al5O12:Ce3+ white light emitting diodes using reddish light-recycling filter,” Electrochem. Solid-State Lett. 13(1), J5–J17 (2010).
[Crossref]

Nanotechnology (1)

S. H. Kim, J.-D. Park, and K.-D. Lee, “Fabrication of a nano-wire grid polarizer for brightness enhancement in liquid crystal display,” Nanotechnology 17(17), 4436–4438 (2006).
[Crossref]

Opt. Express (3)

Proc. SPIE (3)

J. C. Ramella-Roman, K. Lee, S. A. Prahl, and S. L. Jacques, “Polarized light imaging white a hand-held camera,” Proc. SPIE 5068, 284–293 (2003).
[Crossref]

J. S. Baba, S. S. Gleason, J. S. Goddard, and M. J. Paulus, “Application of polarization for optical motion-registered SPECT functional imaging of tumors in mice,” Proc. SPIE 5702, 97–103 (2005).
[Crossref]

T. Weber, H.-J. Fuchs, H. Schmidt, E.-B. Kley, and A. Tünnermann, “Wire-grid polarizer for the UV spectral region,” Proc. SPIE 7205, 720504, 720504-8 (2009).
[Crossref]

Other (3)

M. Schiel, “Remote-phosphor technology can deliver a more uniform and attractive light output from LED lamps,” LEDs magazine, September, (2012).

R. Otte, L. P. de Joung, and A. H. M. van Roermund, Low-Power Wireless Infrared Communications (Kluwer, Academic, 1999).

P. Yeh and C. Gu, Optics of Liquid Crystal Displays (John Wiley, Canada, Academic, 1999).

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Figures (8)

Fig. 1
Fig. 1

Schematic diagrams of (a) an actual lighting fixture featuring remote-phosphor, and (b) the RPF/SPDF-sandwiched remote-phosphor.

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Fig. 2
Fig. 2

Transmittance spectra of SPDF (blue line) and RPF (red line) (Black line spectrum; the normalized emission spectrum of a yellow phosphor film on a blue LED).

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Fig. 3
Fig. 3

Schematic diagrams and photographs of four pc-LED configurations with differently designed remote-phosphor layers (a) conventional, (b) RPF-capped, (c) SPDF-inserted, and (d) RPF/SPDF-sandwiched remote-phosphor layer. (The arrow with a two-sided arrow indicates p-polarization light, an arrow with a dot indicates s-polarization light, and both (a two-sided arrow and dot) indicate unpolarized light.)

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Fig. 4
Fig. 4

The EL spectra of four different types of remote phosphor films on blue LED: (a) conventional and SPDF-inserted and (b) RPF-capped and RPF/SPDF-sandwiched phosphor layer.

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Fig. 5
Fig. 5

Four different types of remote phosphor films on blue LEDs: conventional, RPF-capped, SPDF-inserted, and RPF/SPDF-sandwiched phosphor layer (a) the relative luminous flux, (b) the conversion efficiency, (c) the CIE color coordinates, and (d) the correlated color temperature (CCT).

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Fig. 6
Fig. 6

The CCT distribution of four samples (conventional, RPF-capped, SPDF-inserted, and RPF/SPDF-sandwiched, remote phosphor white LED) as a function of viewing angle.

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Fig. 7
Fig. 7

(a) Schematic diagram of the polarizer-rotating measurement system, and (b) the relative yellow intensity (at 565nm) of four different types of remote phosphor films on blue LEDs: conventional, RPF-capped, SPDF-inserted, and RPF/SPDF-sandwiched phosphor layer.

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Fig. 8
Fig. 8

EL spectra of cases with and without polarizer (a) RPF-capped, and (b) RPF/SPDF-sandwiched phosphor layer.

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