| 초록 |
Since the discovery of X-rays by Wilhelm Rontgen in 1985, many researchers have been actively conducted to detect X-rays. Recently, the X-rays detector can be classified into direct- and indirect-type detector. To date, the indirect‐type X‐ray detectors have widely been used in the common flat panel X‐ray detectors consisted of a scintillator and a Si‐PD array because they are much cheaper and more stable than the direct‐type detectors. Here, we demonstrated commercializable and cost‐effective next‐generation CsPbBr3 perovskite nanocrystals (PNCs) based X‐ray detectors. The PNCs‐based X‐ray detector exhibits high spatial resolution (9.8 lp mm−1 at modulation transfer function (MTF) = 0.2 and 12.5–8.9 lp mm−1 for a linear line chart), fast response time (≈200 ns), and good stability (＞40 Gyair s−1 of X‐ray exposure). |
