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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ORCiD logo [5] ;  [6]
  1. Univ. of California, Santa Barbara, CA (United States). Materials Dept.; Univ. of California, Santa Barbara, CA (United States). Materials Research Lab.; Univ. of California, Santa Barbara, CA (United States). Solid State Lighting and Energy Electronics Center
  2. Univ. of California, Santa Barbara, CA (United States). Materials Research Lab.
  3. Univ. of California, Santa Barbara, CA (United States). Solid State Lighting and Energy Electronics Center
  4. Univ. of California, Santa Barbara, CA (United States). Materials Dept.; Univ. of California, Santa Barbara, CA (United States). Materials Research Lab.
  5. Univ. of California, Santa Barbara, CA (United States). Materials Dept.; Univ. of California, Santa Barbara, CA (United States). Solid State Lighting and Energy Electronics Center
  6. Univ. of California, Santa Barbara, CA (United States). Materials Dept.; Univ. of California, Santa Barbara, CA (United States). Materials Research Lab.; Univ. of California, Santa Barbara, CA (United States). Solid State Lighting and Energy Electronics Center; Univ. of California, Santa Barbara, CA (United States). Dept. of Chemistry and Biochemistry
Publication Date:
Grant/Contract Number:
AC02-06CH11357; DGE 1144085; AR0000671; DMR 1121053
Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 10; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Phosphors; Laser diodes; Powders; Light emitting diodes; Ceramics
OSTI Identifier:
1373382