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Improved radiation detection using quantum-dot/organic semiconductor composites is demonstrated. Electron scintillation results (see Figure) demonstrate more than a doubling of photon generation efficiency with quantum-dot volume fraction. Simple estimates suggest that an ionization energy of about 3 eV/photon may be achieved. These composites are promising for low cost and high energy resolution gamma-ray, neutron, and charged-particle detection.
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Campbell et al. (2005) studied this question.
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