Quantum‐Dot/Organic Semiconductor Composites for Radiation Detection

Abstract

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.