Polarized light extraction in m-plane GaN light-emitting diodes by embedded photonic-crystals

The polarization-preserving property of photonic crystals (PhCs) is combined to the superior extraction efficiency of embedded PhCs to enhance polarized light emission in m-plane GaN light-emitting diodes. As guided modes in m-plane GaN are mostly polarized along the a-direction (E<parallel to>a), their efficient extraction is achieved by one-dimensional embedded PhCs also aligned to the a-direction. A better diffraction efficiency is obtained by air-gap PhCs which required the growth of high quality, defect-free, m-plane GaN coalesced over the embedded air-grooves. (C) 2011 American Institute of Physics. [doi:10.1063/1.3602319]


Published in:
Applied Physics Letters, 98, 25, 251112
Year:
2011
Publisher:
Melville, Amer Inst Physics
ISSN:
0003-6951
Keywords:
Laboratories:




 Record created 2016-03-17, last modified 2018-03-17


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