In this talk, we discuss harnessing the unique properties of amorphous selenium (a-Se) and its alloy. Our exploration into Te alloying has revealed critical insights into defect states and their impact on electronic properties. By integrating density functional theory (DFT) simulations with experimental validation, we discovered that while Te incorporation reduces the band gap and mobility,...
Silicon photomultipliers (SiPMs) have had a transformational impact on many important experiments in high-energy and astrophysics. However, the SiPM is intrinsically limited in its photoresponse below ~300 nm, a critical wavelength range for liquid noble scintillation detectors. An alternative to silicon for the fabrication of UV avalanche photodiodes (APDs) are the wide-bandgap III-N...
Photon detectors featuring single-photon sensitivity play a crucial role in various scientific domains, including high-energy physics, astronomy, and quantum optics. Fast response time, high quantum efficiency, and minimal dark counts are the characteristics that render them ideal candidates for detecting individual photons with exceptional signal-to-noise ratios, at frequencies in the range...
Single-crystal diamonds are used in particle detection via charge collection mode, benefiting from their high charge mobility and long carrier lifetime. However, their production is challenging and size-limited. Polycrystalline diamond, which can be produced more easily and in larger sizes through Chemical Vapor Deposition, offer a viable alternative as scintillators for charged particle...
