Quantum Dot Scintillator

Quantum (size) confinement of semiconductor materials (quantum dots) leads to unique optical properties such as the ability to tune emission bands with QD size. As with bulk semiconductors, doped QDs can be made by introducing dopants with intermediate energy levels leading to enhanced stokes shift. RMD is investigating use of QD-polymer composites as plastic scintillators to compliment all organic scintillators.

Optically clear polymer composites made with undoped (red) and doped (yellow) QDs and their X ray scintillation. On the right X ray image of line pair phantom (shown on top) obtained by a QD composite scintillator