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Title: Monolithic translucent BaMgAl 10 O 17 :Eu 2+ phosphors for laser-driven solid state lighting

Authors:
; ; ; ; ; ORCiD logo;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1397291
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 6; Journal Issue: 10
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Cozzan, Clayton, Brady, Michael J., O’Dea, Nicholas, Levin, Emily E., Nakamura, Shuji, DenBaars, Steven P., and Seshadri, Ram. Monolithic translucent BaMgAl 10 O 17 :Eu 2+ phosphors for laser-driven solid state lighting. United States: N. p., 2016. Web. doi:10.1063/1.4964925.
Cozzan, Clayton, Brady, Michael J., O’Dea, Nicholas, Levin, Emily E., Nakamura, Shuji, DenBaars, Steven P., & Seshadri, Ram. Monolithic translucent BaMgAl 10 O 17 :Eu 2+ phosphors for laser-driven solid state lighting. United States. doi:10.1063/1.4964925.
Cozzan, Clayton, Brady, Michael J., O’Dea, Nicholas, Levin, Emily E., Nakamura, Shuji, DenBaars, Steven P., and Seshadri, Ram. 2016. "Monolithic translucent BaMgAl 10 O 17 :Eu 2+ phosphors for laser-driven solid state lighting". United States. doi:10.1063/1.4964925.
@article{osti_1397291,
title = {Monolithic translucent BaMgAl 10 O 17 :Eu 2+ phosphors for laser-driven solid state lighting},
author = {Cozzan, Clayton and Brady, Michael J. and O’Dea, Nicholas and Levin, Emily E. and Nakamura, Shuji and DenBaars, Steven P. and Seshadri, Ram},
abstractNote = {},
doi = {10.1063/1.4964925},
journal = {AIP Advances},
number = 10,
volume = 6,
place = {United States},
year = 2016,
month =
}
  • With high power light emitting diodes and laser diodes being explored for white light generation and visible light communication, thermally robust encapsulation schemes for color-converting inorganic phosphors are essential. In the current work, the canonical blue-emitting phosphor, high purity Eu-doped BaMgAl 10O 17, has been prepared using microwave-assisted heating (25 min) and densified into translucent ceramic phosphor monoliths using spark plasma sintering (30 min). Lastly, the resulting translucent ceramic monoliths convert UV laser light to blue light with the same efficiency as the starting powder and provide superior thermal management in comparison with silicone encapsulation.
  • A solid solution strategy helps increase the efficiency of Ce{sup 3+} oxyfluoride phosphors for solid-state white lighting. The use of a phosphor-capping architecture provides additional light extraction. The accompanying image displays electroluminescence spectra from a 434-nm InGaN LED phosphor that has been capped with the oxyfluoride phosphor.
  • III-nitride laser diodes (LDs) are an interesting light source for solid-state lighting (SSL). Modelling of LDs is performed to reveal the potential advantages over traditionally used light-emitting diodes (LEDs). The first, and most notable, advantage is LDs have higher efficiency at higher currents when compared to LEDs. This is because Auger recombination that causes efficiency droop can no longer grow after laser threshold. Second, the same phosphor-converted methods used with LEDs can also be used with LDs to produce white light with similar color rendering and color temperature. Third, producing white light from direct emitters is equally challenging for bothmore » LEDs and LDs, with neither source having a direct advantage. Lastly, the LD emission is directional and can be more readily captured and focused, leading to the possibility of novel and more compact luminaires. These advantages make LDs a compelling source for future SSL.« less
  • III-nitride laser diodes (LDs) are an interesting light source for solid-state lighting (SSL). Modelling of LDs is performed to reveal the potential advantages over traditionally used light-emitting diodes (LEDs). The first, and most notable, advantage is LDs have higher efficiency at higher currents when compared to LEDs. This is because Auger recombination that causes efficiency droop can no longer grow after laser threshold. Second, the same phosphor-converted methods used with LEDs can also be used with LDs to produce white light with similar color rendering and color temperature. Third, producing white light from color mixed emitters is equally challenging formore » both LEDs and LDs, with neither source having a direct advantage. Fourth, the LD emission is directional and can be more readily captured and focused, leading to the possibility of novel and more compact luminaires. Finally, the smaller area and higher current density operation of LDs provides them with a potential cost advantage over LEDs. These advantages make LDs a compelling source for future SSL.« less