Min-Hoi Kim

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In this paper we present for the first time experimental results on a frequency doubler using a Si/SiGe HBT as the non-linear element. Despite the high output operating frequency being close to f max , 67 GHz, for the Si/SiGe HBT, the conversion efficiency in a not completely optimised circuit was found to be better than-12 dB. The 3 dB bandwidth for the(More)
We demonstrate an array of solid-state dye-sensitized solar cells (SS-DSSCs) for a high-voltage power source based on micropatterned titanium dioxide nanoparticles (TNPs) as photoanodes connected in series. The underlying concept of patterning the TNP of a few micrometers thick lies on the combination of the lift-off process of transfer-printed patterns of(More)
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