Zobrazeno 1 - 10
of 70
pro vyhledávání: '"W. S. Koh"'
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 20:36-42
Graphene possesses innate potential to replace indium tin oxide (ITO) as the transparent electrode in an organic solar cell device. From our transmittance study weighted with the air mass 1.5 global (AM1.5G) solar spectrum, it is found that a higher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2d3c35314cfdfe46a1efdb407b354f6
https://doi.org/10.1109/jstqe.2013.2247976
https://doi.org/10.1109/jstqe.2013.2247976
Publikováno v:
Optical Properties of Graphene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29d5309aa58d7fe089cf520c7f3f1692
https://doi.org/10.1142/9789813148758_0014
https://doi.org/10.1142/9789813148758_0014
Publikováno v:
IEEE Journal of Photovoltaics. 1:84-92
This paper describes a 3-D optoelectronic device model for organic bulk heterojunction solar cells. Three-dimensional full-wave optical simulation enables us to incorporate different modern light trapping techniques, such as subwavelength nanostructu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85cbaa6e6a81b071a76bea2b2e273fe8
https://doi.org/10.1109/jphotov.2011.2163620
https://doi.org/10.1109/jphotov.2011.2163620
Autor:
W. S. Koh, Yuriy Akimov
Publikováno v:
Plasmonics. 6:155-161
This paper explores geometry-sensitive scattering from plasmonic nanoparticles deposited on top of a thin-film amorphous silicon solar cell to enhance light trapping in the photo-active layer. Considering the nanoparticles as ideal spheroids, the bro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6c811cf05af90f192114d16afff9cc9
https://doi.org/10.1007/s11468-010-9181-4
https://doi.org/10.1007/s11468-010-9181-4
We assessed the efficiencies of surface plasmon excitation by an aloof-scattered electron beam on metals and graphene. Graphene is shown to exhibit high energy transfer efficiencies at very low electron kinetic energy requirements. We show that the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bfd57106a6de6c25ecab4040c5ffbd8
Autor:
W. S. Koh, Lay Kee Ang
Publikováno v:
International Journal of Nanoscience. :677-684
We have studied the intense electron beams emitted from multiple metallic, vertical and well-aligned Carbon Nanotube (CNT) field emitters. A two-dimensional (2D) particle-in-cell simulation code MAGIC2D is used to obtain the I–V characteristics nea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1352bf8f3cc994c3bf1f96fd49e6afe0
https://doi.org/10.1142/s0219581x04002528
https://doi.org/10.1142/s0219581x04002528
Publikováno v:
Comparative Clinical Pathology. 11:98-106
The present study was undertaken to investigate changes in haematology parameters over the course of normal pregnancy in New Zealand White rabbits. Blood samples were collected on gestational days (GD) 0, 4, 8, 12, 16, 20, 24, and 28. Red blood cell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cc905fa69fda74ee7cfb73865d5fbce
https://doi.org/10.1007/s005800200006
https://doi.org/10.1007/s005800200006
Publikováno v:
2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS).
Numerical self-heating and thermalization are two unphysical artifacts in particle-in-cell (PIC) simulations due to the implicit assumptions used in the numerical method. Numerical self-heating in plasma simulations can typically be suppressed by usi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b432958485115198e59a583e9a5ab73d
https://doi.org/10.1109/plasma.2014.7012307
https://doi.org/10.1109/plasma.2014.7012307
Autor:
W. S. Koh, W. J. Ding
Publikováno v:
2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS).
Terahertz (THz) radiation provides very wide and promising applications in fields of information, non-invasive imaging, and fundamental science. The community seeks strong THz sources nowadays to access the applications from linear to non-linear rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d139ee9681fdad90ae183e4d29c3200b
https://doi.org/10.1109/plasma.2014.7012508
https://doi.org/10.1109/plasma.2014.7012508
Publikováno v:
Frontiers in Optics 2014.
We investigate and discuss the viability of graphene plasmons excited through the aloof-scattering of free electrons and inelastic electron tunneling. Excitation efficiencies may be potentially larger compared to that for metal plasmons.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2645eb751cd71ea1a9909ba41a8819ea
https://doi.org/10.1364/fio.2014.fth3e.6
https://doi.org/10.1364/fio.2014.fth3e.6