An array of nano-pillar LEDs was simulated by means of finite-difference time-domain (FDTD) method. The open access software (MEEP) was used as FDTD engine. Additional functionality like near field to the far-field transformation was written in Matlab. The example of the simulation result along side with the real device measurements is shown on the right side image.
Specification:
- FDTD simulation of near-field above LED device,
- near-field to the far field radiation pattern transformation by dedicated Matlab functions,
- simulation of an incoherent radiation, which was achieved by adding multiple simulations for orthogonal dipoles,
- investigation dipoles in various positions,
- solving the LED model for a single wavelength and/or for full spectrum of LED emission.
Programming skills:
- Scheme,
- Matlab,
- Bash scripting,
- Parallel computation.
Related video: FDTD simulation of Nano-LEDs
Papers related to this work:
- S. M. Lis, P.-M. Coulon, E. D. Le Boulbar, I. Girgel, C. J. Lewins, P. A. Shields, D. W. E. Allsopp, “Controlling of the Angular Emission of InGaN/GaN Core-Shell nano-LEDs array”, 11th International Conference on Nitride Semiconductors, Beijing, China (2015) – oral presentation
- S. M. Lis, S. E. J. O’Kane, S. A. Fox, C. J. Lewins, Y. D. Zhuang, J. Sarma, P. A. Shields, D. W. E. Allsopp, “Designing InGaN/GaN nano-LED arrays for entendue-limited applications”, E-MRS 2014 Spring Meeting, Lille, France (2014) – oral presentation
- S. M. Lis, S. E. J. O’Kane, C. J. Lewins, S. A. Fox, Y. D. Zhuang, J. Sarma, D. W. E. Allsopp, “Factors Affecting the Directionality of InGaN/GaN Nanorod LED Arrays”, 10th International Conference on Nitride Semiconductors, Washington D.C., USA (2013) – oral presentation