Influence of geometry on the directionality of light emission of nanorod array vertical light emitting diodes

Author

Fox, S.A. ; Lis, S. ; Q´Kane, S.E.J. ; Allsopp, D.W.E. ; Sarma, J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Bath, Bath, UK

fYear

2014

fDate

20-22 Oct. 2014

Firstpage

1

Lastpage

4

Abstract

In the work reported here we use the finite-difference time-domain method to model an ordered nanorod array incorporated in a vertical LED structure in place of the surface roughened region. The simulations reveal that diffraction dominates the far field emission when the emissive layer lies below the nanorod array, as might occur in a vertical LED structure with the NR layer used as a light extracting element in place of a roughened surface.

Keywords

finite difference time-domain analysis; light emitting diodes; nanophotonics; nanorods; optical arrays; surface roughness; finite-difference time-domain method; light emission directionality; light extracting element; nanorod array vertical light emitting diodes; ordered nanorod array; surface rougheness; vertical LED structure; Arrays; Diffraction; Finite difference methods; Gallium nitride; Light emitting diodes; Three-dimensional displays; Time-domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Semiconductor Devices & Microsystems (ASDAM), 2014 10th International Conference on

Conference_Location

Smolenice

Print_ISBN

978-1-4799-5474-2

Type

conf

DOI

10.1109/ASDAM.2014.6998705

Filename

6998705