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Enhanced light emission in blue light-emitting diodes by multiple Mie scattering from embedded silica nanosphere stacking layers |
Optics Express, Vol. 19, Issue 23, pp. 23429-23435 (2011)
http://dx.doi.org/10.1364/OE.19.023429
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Abstract
We demonstrate enhanced light emission in blue light-emitting diodes (LEDs) by multiple Mie scattering from embedded silica nanosphere stacking layers (SNSL). A honeycomb cone structure is introduced in the GaN epilayer to confine a maximum number of silica nanospheres (SNs). We found that the light is predominantly directed vertically by scattering and geometrical effect in SNSL embedded LEDs. Consequently, the light output power is enhanced by 2.7 times, which we attribute to the improvement in light extraction efficiency due to the multiple Mie scattering of light from the embedded SNSL. The experimental results are verified by simulation using finite difference time domain method (FDTD).
© 2011 OSA
OCIS Codes
(250.0250) Optoelectronics : Optoelectronics
(290.0290) Scattering : Scattering
ToC Category:
Optical Devices
History
Original Manuscript: September 2, 2011
Revised Manuscript: October 20, 2011
Manuscript Accepted: October 20, 2011
Published: November 2, 2011
Virtual Issues
Vol. 7, Iss. 1 Virtual Journal for Biomedical Optics
Citation
Young Jae Park, Ji Hye Kang, Hee Yun Kim, Volodymyr V. Lysak, S. Chandramohan, Jae Hyoung Ryu, Hyun Kyu Kim, Nam Han, Hyun Jeong, Mun Seok Jeong, and Chang-Hee Hong, "Enhanced light emission in blue light-emitting diodes by multiple Mie scattering from embedded silica nanosphere stacking layers," Opt. Express 19, 23429-23435 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-23-23429
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