Device response principles and the impact on energy resolution of epitaxial quantum dot scintillators with monolithic photodetector integration.

ABSTRACT: Epitaxial quantum dot (QD) scintillator crystals with picosecond-scale timing and high light yield have been created for medical imaging, high energy physics and national security applications. Monolithic photodetector (PD) integration enables the sensing of photons generated within the waveguiding crystal and allows a wide range of scintillator-photodetector coupling geometries. Until recently, these doubly novel devices have suffered from complex, high variance responses to monoenergetic sources which significantly reduces their precision and accuracy. The principles governing the overall device response have now been discerned and embodied by an expression derived within a geometrical optics framework which considers optical properties, surface roughness and photodetector coupling geome

SUBMITTER: Minns A 

PROVIDER: S-EPMC11445416 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature