Abstract
A spectrally- and time-resolved study of single CdSe/ZnS quantum dots (QDs) is presented. To this end a versatile, high sensitivy spectrograph is coupled to a confocal laser-scanning microscope. The spectrograph is built in-house and is especially developed for use in fluorescence microscopy. The high sensitivity is achieved by using a prism for the dispersion of light in combination with a state-of-the-art back-illuminated charge-coupled device (CCD) camera. The detection efficiency of the spectrograph, including the CCD camera, amounts to 0.77 ±0.05 at 633 nm. Full emission spectra with a 1–5 nm spectral resolution can be recorded at a maximum rate of 800 spectra per second. The spectrograph can easily be fiber-coupled to any confocal laser-scanning microscope.
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Van Sark, W.G.J.H.M., Frederix, P.L.T.M., Asselbergs, M.A.H., Van den Heuvel, D.J., Meijerink, A., Gerritsen, H.C. (2002). Spectral Imaging of Single CdSe/ZnS Quantum Dots Employing Spectrally- and Time-resolved Confocal Microscopy. In: Kraayenhof, R., Visser, A.J.W.G., Gerritsen, H.C. (eds) Fluorescence Spectroscopy, Imaging and Probes. Springer Series on Fluorescence, vol 2. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-56067-5_19
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DOI: https://doi.org/10.1007/978-3-642-56067-5_19
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