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Photoluminescent Solution

Photonics Spectra
Jan 2011
Hamamatsu CorporationRequest Info
 
Hamamatsu Corp.’s Quantaurus-QY is a compact, integrated solution for quickly and easily measuring the quantum yield and other properties of photoluminescent materials. It measures fluorescent probes, dye-sensitized photovoltaic materials, LED phosphor, organic metal complexes, organic LED materials and quantum dots. The device performs absolute (not relative) measurements quickly, without the need to prepare reference samples. It can be used to analyze thin films, powders, solids and solutions. Contained within the compact package is everything needed to capture instantaneous measurements with high sensitivity. This includes an excitation light source (xenon lamp and monochromator), an integrating sphere with optional nitrogen gas flow and a high-sensitivity CCD sensor. Two models are available. The standard C11347-01 covers wavelengths from 300 to 950 nm, and the near-IR C11347-02 covers 400- to 1100-nm wavelengths.


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GLOSSARY
excitation
1. The process by which an atom acquires energy sufficient to raise it to a quantum state higher than its ground state. 2. More specifically with respect to lasers, the process by which the material in the laser cavity is stimulated by light or other means, so that atoms are converted to a semistable state, initiating the lasing process.
monochromator
Also known as monochromatic illuminator. An instrument for isolating narrow portions of the spectrum. The spectrum of any light source is formed by a prism or grating, and an exit slit placed in the spectrum selects a narrow band of wavelengths for emission. By moving the spectrum of a source internally past the slit, the color of the emitted light can be varied at will. As most monochromators emit several percentages of unwanted light -- either white or of the wrong wavelength -- along with...
quantum dots
Also known as QDs. Nanocrystals of semiconductor materials that fluoresce when excited by external light sources, primarily in narrow visible and near-infrared regions; they are commonly used as alternatives to organic dyes.  
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