A Study on Improving the Sensitivity of Indirect X-ray Detectors by Adding Hybrid Perovskite Quantum Dots

In this paper, we demonstrate the enhancement in detection sensitivity of an indirect X-ray detector based on poly(3-hexylthiophene) (P3HT) and fullerene derivatives [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) by adding perovskite quantum dots (PeQDs). The weight ratio P3HT PC71BM was fixed at 1:1 (20 mg/mL chlorobenzene), different amounts FAPbBr3 PeQDs (0–3) mg were added to P3HT:PC71BM active layer solution. experimental results show that using P3HT:PC71BM:FAPbBr3 (1 mg) achieved a 2.10 mA/Gy?cm2. To further improve sensitivity, ligand exchange experiment performed detector. Under condition 12 h time, with showed highest 2.26 mA/Gy?cm2, which increased 28% compared pristine layer.