A Radiation Tolerant Proton Detector Based on MAPbBr3 single crystal

TL;DR

This paper presents a MAPbBr3 single crystal proton detector that demonstrates high radiation tolerance, low bias operation, and potential for use in proton therapy and imaging, with promising recovery after irradiation.

Contribution

The study introduces a radiation-tolerant proton detector based on MAPbBr3 single crystals capable of operation at zero bias and with recoverable dark current after irradiation.

Findings

Operates at low bias (0.01 V/μm) within 45 kGy dose range.

Dark current reduces to 20% after 1 MGy irradiation and recovers at room temperature.

Can monitor fluence rate and dose quantificationally in proton applications.

Abstract

The performance and radiation tolerance of the proton detector based on MAPbBr3 perovskite single crystal are investigated here with 3MeV protons. The detector can monitor fluence rate and dose quantificationally at a low applied bias electric field(0.01$V/{\mu}m$) within a dose range of 45 kGy. The detector can also be worked at zero bias due to the Dember effect. The dark current of the detector reduced to 20% of the initial value after being irradiated with protons to a total fluence of $7.3\times 10^{13} p/cm^2$ (1 MGy), however, it can be recovered at room temperature within hours. These results suggest that this kind of detector has a promising application in proton therapy and proton imaging etc.