Speaker
Description
To enable production of viable pixellated X-ray detectors, single-crystal perovskite devices must demonstrate operational stability and spatially uniform performance. In addition, while the low cost of solution-grown crystals is attractive, cheaper semiconductor crystals deliver only modest savings in overall detector costs. This means that comparative measurements must show performance for solution-grown crystals which is close to or surpasses that of low-defect melt-grown devices. Here, we present results of synchrotron experiments in which the X-ray detection performance of melt-grown CsPbBr$_3$ devices from Actinia and solution-grown FAPbBr$_3$ devices from the University of Surrey and the University of Cambridge were each measured at fluxes up to 10$^9$ ph/s/mm2.