Wee Koh

Current Research

• Nano-Photonics and Plasmonics
• Solar cell design and Optoelectronic device physics
• Plasma and particle-in-cell simulations
• Urban environmental & green building modeling – solar irradiance & daylighting

Selected Publications

• K. J. A. Ooi, W. S. Koh, H. S. Chu, D. T. H. Tan, L. K. Ang, “Efficiencies of Aloof-Scattered Electron Beam Excitation of Metal and Graphene Plasmons”, IEEE Trans. Plasma Sci, IEEE Trans Plasma Sci. , 43, 951-956 (2015). [INVITED ARTICLE]
• Y.-L. Liu, S. H. Chen, W. S. Koh, and L. K. Ang, “Two-dimensional relativistic space charge limited current flow in the drift space”, Phys. Plasmas, 21, 043101 (2014).
• W. S. Koh, C. H. Gan, W. K. Phua, Yu. A. Akimov and P. Bai, “The potential of graphene as an ITO replacement in organic solar cells: An optical perspective”, IEEE J. Quantum Electron., 20, 36-42 (2014).
• W. J. Ding, Z. M. Sheng and W. S. Koh, “High-field half-cycle terahertz radiation from relativistic laser interaction with thin solid targets”, Applied Physics Letters, 103, 204107 (2013).
• S. H. Chen, L. C. Tai, Y. L. Liu, L. K. Ang, and W. S. Koh, “Two-dimensional electromagnetic Child–Langmuir law of a short-pulse electron flow”, Phys. Plasmas, 18, 023105 (2011).
• Yu. A. Akimov and W. S. Koh, “Design of plasmonic nanoparticles for efficient subwavelength light trapping”, Appl. Phys. Let., 99, 063102 (2011).
• Yu. A. Akimov and W. S. Koh, “Tolerance sudy of nanoparticle enhancement for thin-film silicon solar cell”, Appl. Phys. Let., 99, 063102 (2011).
• W. S. Koh, M. Pant, Yu. A. Akimov, W. P. Goh and Y. Li, “Three-Dimensional Optoelectronic Model for Organic Bulk Heterojunction Solar Cells, IEEE Journal of Photovoltaics, 1, 84-92 (2011).

Affiliations & Links

Institute of High Performance Computing (A*STAR)