Zero-dimensional Cu()-based organometallic halide with green cluster-centred emission for high resolution X-ray imaging screens

In this communication, we report a low-dimensional perovskite-related structure based on Cu( i ) organometallic halide with strong green cluster-centred emission and near-unity photoluminescence quantum yield. The 0D [Rb(18-crown-6)] 2 Cu 4 I 6 was sucessfully applied for X-ray imaging screens which exhibit high spatial resolution of 16.8 lp mm −1 and low detection limit of 458 nGy s −1 . Zero-dimensional cupper( i ) organometallic metal halide, with a perovskite-related structure, exhibits an efficient green cluster-centred emission for next-generation X-ray imaging screens.