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Title: Advantages of III-nitride laser diodes in solid-state lighting: Advantages of III-nitride laser diodes in solid-state lighting

Abstract

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 for 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.

Authors:
 [1];  [1]
  1. Sandia National Laboratories, PO Box 5800, Albuquerque New Mexico 87185 USA
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). EFRC for Solid State Lighting Science (SSLS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1384691
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Physica Status Solidi. A, Applications and Materials Science
Additional Journal Information:
Journal Volume: 212; Journal Issue: 5; Related Information: SSLS partners with Sandia National Laboratories (lead); California Institute of Technology; University of California, Irvine, Merced, and Santa Barbara; Los Alamos National Laboratory; University of New Mexico; Northwestern University; Philips Lumileds Lighting; Journal ID: ISSN 1862-6300
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; solar (photovoltaic), solid state lighting, phonons, materials and chemistry by design, optics, synthesis (novel materials)

Citation Formats

Wierer, Jonathan J., and Tsao, Jeffrey Y. Advantages of III-nitride laser diodes in solid-state lighting: Advantages of III-nitride laser diodes in solid-state lighting. United States: N. p., 2015. Web. doi:10.1002/pssa.201431700.
Wierer, Jonathan J., & Tsao, Jeffrey Y. Advantages of III-nitride laser diodes in solid-state lighting: Advantages of III-nitride laser diodes in solid-state lighting. United States. doi:10.1002/pssa.201431700.
Wierer, Jonathan J., and Tsao, Jeffrey Y. Wed . "Advantages of III-nitride laser diodes in solid-state lighting: Advantages of III-nitride laser diodes in solid-state lighting". United States. doi:10.1002/pssa.201431700.
@article{osti_1384691,
title = {Advantages of III-nitride laser diodes in solid-state lighting: Advantages of III-nitride laser diodes in solid-state lighting},
author = {Wierer, Jonathan J. and Tsao, Jeffrey Y.},
abstractNote = {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 for 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.},
doi = {10.1002/pssa.201431700},
journal = {Physica Status Solidi. A, Applications and Materials Science},
issn = {1862-6300},
number = 5,
volume = 212,
place = {United States},
year = {2015},
month = {1}
}

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