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Optical Materials Express

Optical Materials Express

  • Editor: David Hagan
  • Vol. 4, Iss. 9 — Sep. 1, 2014
  • pp: 1824–1832

Luminance enhancement of electroluminescent devices using highly dielectric UV-curable polymer and oxide nanoparticle composite

Seok-Hwan Chung, Seongkyu Song, Kee-Jeong Yang, Soon Moon Jeong, and Byeongdae Choi  »View Author Affiliations

Optical Materials Express, Vol. 4, Issue 9, pp. 1824-1832 (2014)

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A flexible hybrid structure electroluminescent (HSEL) device was fabricated from ZnS:Cu phosphor microparticles dispersed in a UV-curable polymer matrix. We observed a maximum luminance of 111 cd/m2 at 10 kHz and 170 V from a device wherein the mixing ratio between the phosphor particles and highly dielectric polymer binder was 70:30 wt%. Furthermore, by uniformly dispersing highly dielectric BaTiO3 nanoparticles within the polymer matrix, we were able to obtain a luminance of up to 211 cd/m2 in the HSEL device. Compared to the conventional thermal curing process, this UV process greatly simplifies the fabrication steps by combining phosphors and dielectric materials at room temperature. This process also demonstrates a promising pathway toward creating flexible and printed EL devices in the future.

© 2014 Optical Society of America

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(160.5470) Materials : Polymers
(230.0230) Optical devices : Optical devices
(260.3800) Physical optics : Luminescence
(160.4236) Materials : Nanomaterials

ToC Category:
Fluorescent and Luminescent Materials

Original Manuscript: July 9, 2014
Revised Manuscript: July 29, 2014
Manuscript Accepted: August 3, 2014
Published: August 11, 2014

Seok-Hwan Chung, Seongkyu Song, Kee-Jeong Yang, Soon Moon Jeong, and Byeongdae Choi, "Luminance enhancement of electroluminescent devices using highly dielectric UV-curable polymer and oxide nanoparticle composite," Opt. Mater. Express 4, 1824-1832 (2014)

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