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Mesoporous Silicon Photonic Crystal Microparticles: Towards Single-Cell Optical Biosensors, Bin Guan, Astrid I. Magenau, Krisopher A. Kilian, Simone Ciampi, Katharina Gaus, Peter J. Reece, J Justin Gooding
Mesoporous Silicon Photonic Crystal Microparticles: Towards Single-Cell Optical Biosensors, Bin Guan, Astrid I. Magenau, Krisopher A. Kilian, Simone Ciampi, Katharina Gaus, Peter J. Reece, J Justin Gooding
Australian Institute for Innovative Materials - Papers
In this paper we demonstrate the possibility of modifying porous silicon (PSi) particles with surface chemistry and recognition molecules (antibodies) such that these devices could potentially be used for single-cell identification or sensing. This is achieved by modifying PSi Rugate filters via hydrosilylation with surface chemistry that serves firstly, to protect the silicon surfaces from oxidation; secondly, renders the surfaces resistant to nonspecific adsorption of proteins and cells and thirdly, allows further functionality to be added such as the coupling of antibodies. The surface chemistry remained unchanged after sonication of the PSi to form PSi microparticles. The ability to monitor …
Dye-Sensitized Cualo2 Photocathodes For Tandem Solar Cell Applications, Andrew Nattestad, Xiaoli Zhang, Udo Bach, Yi-Bing Cheng
Dye-Sensitized Cualo2 Photocathodes For Tandem Solar Cell Applications, Andrew Nattestad, Xiaoli Zhang, Udo Bach, Yi-Bing Cheng
Australian Institute for Innovative Materials - Papers
Dye-sensitized solar cells (DSCs) using the p-type semiconductor CuAlO2, in conjunction with a highly effective hole injecting dye and an iodide-triiodide-based electrolyte have been produced, demonstrating photocathodic behavior. An improved open-circuit voltage (VOC) of 333 mV was observed, compared to analogous devices using NiO, which can be explained by the CuAlO2 valence-band energy, which is lower on the vacuum scale than that of NiO. Incident photon-to-charge-carrier efficiency response confirms that the observed photocurrent is generated by the dye.