Tl-doped Cs3Cu2I5 Single Crystal

α/β PSD FoM of 2.64

By forming strongly localized Tl-bound excitons to suppress non-radiative exciton-exciton interaction, the exciton-harvesting efficiency is significantly improved, enabling superior charged particle detection performance.

Wang, Qian · Shi, Hongliang · Chen, Jie · Yang, Junye · Zhou, Zhengyang · Li, Yunyun · Nikl, Martin · Sun, Xilei · Ouyang, Xiaoping · Wu, Yuntao

Light: Science and Applications 2024

Advantages

α/β pulse-shape-discrimination FoM factor of 2.64

rejection ratio of 10⁻⁹

scintillation yield of 26 000 photons MeV⁻¹ under 5.49 MeV α-ray

radiation detector prototype based on the single crystal can identify radioactive ²²⁰Rn gas