565 citations · 821 across the 9 of their papers we have counts for
4 papers · 1 filter
Unidirectional and Wavelength Selective Photonic Sphere-Array Nanoantennas
Yang G. Liu, Wallace C. H. Choy, Wei E. I. Sha +1
We design a photonic sphere-array nanoantenna (NA) exhibiting both strong directionality and wavelength selectivity. Although the geometric configuration of the photonic NA resembl…
Observing Abnormally Large Group Velocity at the Plasmonic Band Edge via a Universal Eigenvalue Analysis
Wei E. I. Sha, Ling Ling Meng, Wallace C. H. Choy +1
We developed a novel universal eigenvalue analysis for 2D arbitrary nanostructures comprising dispersive and lossy materials. The complex dispersion relation (or complex Bloch band…
The Efficiency Limit of CH3NH3PbI3 Perovskite Solar Cells
Wei E. I. Sha, Xingang Ren, Luzhou Chen +1
With the consideration of photon recycling effect, the efficiency limit of methylammonium lead iodide (CH3NH3PbI3) perovskite solar cells is predicted by a detailed balance model.…
Green's Dyadic, Spectral Function, Local Density of States, and Fluctuation Dissipation Theorem
W. C. Chew, W. E. I Sha, Q. I. Dai
The spectral functions are studied in conjunction with the dyadic Green's functions for various media. The dyadic Green's functions are found using the eigenfunction expansion meth…